Answer:
b.) Br and Br
Explanation:
A covalent bond occurs when electrons are shared between two atoms causing them to form a bond.
A "pure" covalent bond refers to a nonpolar covalent bond. In these bonds, the electrons are shared equally between two atoms as a result of the absence of an (or very small) electronegativity difference. The purest covalent bond would therefore be between two atoms of the same electronegativity. Two bromines (Br) have the same electronegativity, thus making it the purest covalent bond.
Polar covalent bonds occur when electrons are shared unequally between two atoms. There is a larger electronegativity difference between the two atoms, but not large enough to classify the bonds as ionic. In this case, a.) and c.) are polar covalent bonds and d.) is an ionic bond.
9) Identify the following as a physical property, physical change, chemical property, or chemical change:
a) Ethanol has a density of 0.697 g/mL.
b) The solution turns blue upon mixing water and food coloring.
c) Wood burns in an oven.
d) Methyl alcohol is highly flammable.
e) Ice melts in a beaker.
f) Methyl ethanoate smells like apples.
g) A car crashes into a wall.
h) Sugar dissolves in water.
a) physical property
b) chemical change
c) chemical change
d) chemical property
e) physical change
f) physical property
g) physical change
h) physical change
a) Ethanol has a density of 0.697 g/mL shows physical property, b) The solution turns blue upon mixing water and food coloring shows chemical change, c) Wood burns in an oven shows chemical change, d) Methyl alcohol is highly flammable shows chemical property, e) Ice melts in a beaker shows physical change, f) Methyl ethanoate smells like apples shows physical property, g) A car crashes into a wall shows physical change and h) Sugar dissolves in water shows physical change.
A physical change is a transition that modifies a substance's physical characteristics without changing its chemical makeup or identity. The substance's molecules don't change during a physical change; only their arrangement or state does. On the other hand, a chemical change entails the creation of new compounds with chemical properties that differ from the original ones. A entirely new substance is produced as a result of a chemical reaction in which the links between atoms or molecules are broken and new bonds are established.
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Can someone please convert this for brainiest answer
2.4 x 10^24 atoms c to grams
Answer:
48 g C
Explanation:
To find the grams, you need to (1) convert atoms to moles (using Avogadro's Number) and then (2) convert moles to grams (using atomic mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 2 sig figs to match the sig figs of the given value.
Avogadro's Number:
6.022 x 10²³ atoms = 1 mole
Atomic Mass (C): 12.011 g/mol
2.4 x 10²⁴ atoms C 1 mole 12.011 g
----------------------------- x -------------------------------- x --------------- = 48 g C
6.022 x 10²³ atoms 1 mole
Consider the following reaction at 298K.
I2 (s) + 2 Cr2+ (aq) 2 I- (aq) + 2 Cr3+ (aq)
Which of the following statements are correct?
Choose all that apply.
n = 4 mol electrons
Eo cell < 0
delta G^o < 0
The reaction is reactant-favored.
K > 1
The true statements are;
ΔG < 0K > 1What are the correct statements?Now we can see that the reaction here is a redox reaction. Thus;
Eocell = cell potential = 0.54 - (-0.41) = 0.95 V
K = equilibrium constant = ?
n = number of moles of electrons = 2
ΔG = change in free energy = ?
Hence;
Eocell = 0.0592/n log K
0.95 = 0.0592/2 log K
K = 0.95 * 2/0.0592
K = 1.2 * 10^32
Now
ΔG = -nFEcell
ΔG = - (2 * 96500 * 0.95)
ΔG = -183.3kJ
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what are the coefficients to balance Ag + Cu(NO3)2 = Cu + AgNO3
Answer:
See below
Explanation:
2 Ag + Cu(NO3)2 = Cu + 2 AgNO3
The value of x in Fe(NH₂)₂(SO4)₂ xH₂O can be found by determining the amount in mol of sulfate in the compound. A 0.982 g sample was dissolved in water and excess BaCl₂(aq) was added. The precipitate of BaSO, was separated and dried and found to weigh 1.17 g.
a) Calculate the amount, in mol, of BaSO4 in the 1.17 g of precipitate.
b) Calculate the amount, in mol, of sulfate in the 0.982 g sample of Fe(NH₂)₂(SO4)₂ XH₂O.
c) Calculate the amount, in mol, of iron in the 0.982 g sample of Fe (NH₂)₂(SO4)2 xH₂O.
d) Determine the mass, in g, of the following present in the 0.982 g sample of Fe(NH₂)₂(SO₂)₂ xXH₂O:
(i) iron (ii) ammonium (iii) sulfate.
e) Use your answer from part (d) to determine the amount in mol of water present in the 0.982 g sample of Fe(NH₂)₂(SO4)₂ xH₂O.
Answer: e
Explanation: ima be real i searched it up lol
Calculate the vapor pressure of a solution of 32.5 g of glycerol (C3H8O3) in 500.0 g of water at 25°C. The vapor pressure of water at 25°C is 23.76 torr. (Assume ideal behavior.)
The vapor pressure is obtained as 23.47 torr.
What is the vapor pressure?Given that; p = x1p°
p = vapor pressure of the solution
x1 = mole fraction of the solvent
p° = vapor pressure of the pure solvent
Δp = p°(1 - x1)
Δp =x2p°
Δp = vapor pressure lowering
x2 = mole fraction of the of the solute
Number of moles of glycerol = 32.5 g/92 g/mol = 0.35 moles
Number of moles of water = 500.0 g/18 g/mol = 27.8 moles
Total number of moles = 0.35 moles + 27.8 moles = 28.15 moles
Mole fraction of glycerol = 0.35 moles/28.15 moles = 0.012
Mole fraction of water = 27.8 moles/28.15 moles =0.99
Δp = 0.012 * 23.76 torr
Δp = 0.285 torr
p1 = p° - Δp
p1 = 23.76 torr - 0.285 torr
p1 = 23.47 torr
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Question 5 (Essay Worth 5 points)
(03.01 MC)
TOOIS
The electron configuration of an element is 1s²2s²2p63s¹. Describe what most likely happens when an atom of this element comes near an atom having seven valence electrons.
The likely thing which will occur when an atom of this element 1s²2s²2p6 3s¹ comes near an atom having seven valence electrons is what is referred to as electrovalent bonding.
What is Electrovalent bonding?
This is also referred to as ionic bonding and involves the transfer of atoms from one element to another. This is done so as to ensure that an octet configuration is achieved.
The element 1s²2s²2p6 3s¹ is Sodium and will undergo ionic bonding with the chlorine. One valence electron is transferred from the sodium to the chlorine which makes them stable.
This is therefore the reason why electrovalent bonding will most likely between the two elements.
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How much heat is added if .1915g of water increases in temperature by .592 degrees C
Predict and balance the following reaction:
Cu3(PO4)2 + Fe(OH)3 →
Group of answer choices
A. Cu3(PO4)2 + 2Fe(OH)3 → 2Fe(PO4)3 + 3Cu(OH)3
B. Cu3(PO4)2 + 2Fe(OH)3 → FeCu3 + (PO4)2(OH)3
C. Cu3(PO4)2 + 2Fe(OH)3 → 2FePO4 + 3Cu(OH)2
D. Cu3(PO4)2 + Fe(OH)3 → FePO4 + Cu(OH)2
The product of the given reaction and the balanced form is as follows: Cu3(PO4)2 + 2Fe(OH)3 → 2FePO4 + 3Cu(OH)2 (option C).
How to balance a chemical reaction?A chemical reaction involves the formation of products from the combination of two or more reactants.
However, for the reaction to be balanced, the number of moles of each element on both sides of the equation must be equal.
According to this question, the following reaction is given: Cu3(PO4)2 + Fe(OH)3 → ?
The product of the given reaction and the balanced form is as follows: Cu3(PO4)2 + 2Fe(OH)3 → 2FePO4 + 3Cu(OH)2.
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What is the concentration of a KCl solution made by diluting 75.0 mL of a 0.200 M solution to a final volume of 100. mL?
Answer:
0.15 M KCl
Explanation:
(Step 1)
Convert the original volume from mL to L. Calculate the moles of the original solution.
75.0 mL / 1,000 = 0.0750 L
Molarity = moles / volume (L)
0.200 M = moles / 0.0750 L
0.0150 = moles
(Step 2)
Convert the final volume from mL to L. Calculate the final molarity.
100. mL / 1,000 = 0.100 L
Molarity = moles / volume (L)
Molarity = 0.0150 moles / 0.100 L
Molarity = 0.15 M
Which area of the periodic table has the most elements included within it?
Group of answer choices
A. Metals
B. Nonmetals
C. Transition Metals
D. Metalloids
The area of the periodic table that has the most elements included within it is metals (option A).
What is periodic table?Periodic table of elements is a tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group (column).
The periodic table encompasses chemical elements arranged horizontally and vertically. The periodic table is made up of groups and periods.
However, most of the elements on the periodic table are metals because virtually 93 elements are metals.
Therefore, the area of the periodic table that has the most elements included within it is metals.
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Need help answering this question
Answer:
1st = saturated
Explanation:
Bro first ka answer saturated he
Determine which substance in the following pair has the greater tendency to be oxidized.
Li or K
Potassium (K) has the greater tendency to be oxidized when compared to Lithium (Li).
What is oxidation?Oxidation is a chemical process triggered by the reaction between an compound and an oxidizing agent. The agent is what gains electrons and undergoes reduction, causing what is called oxidation.
With that being said, as you go down the alkali metal group, the ionisation energy decreases. The tendency of an atom to give its electron (or get oxidised) increases. Therefore, potassium oxidises more easily than lithium or in other words, potassium has a lesser tendency to get reduced compared to lithium.
As lithium has a higher tendency to get reduced than potassium, lithium gets deposited instead of potassium.
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Can someone please help me identify these functional groups? Please it’s extremely urgent
Answer:
See the image below for he circled and labeled functional groups.
*Keep in mind that all of the molecules technically contain alkanes.
The picture shows two containers filled with a gas.
Two equally sized containers are shown with tight lids and each container has a thermometer. The container on the left is labeled A and the one on the right is labeled B. The thermometer inside container B shows a higher temperature than the thermometer inside container A.
Which statement is correct?
The average kinetic energy of the gas particles is greater in container B because it has a higher temperature.
What is temperature?The term temperature refers to a measure of the average kinetic energy of the molecules of body. This means that molecules that are at high temperature tend to move faster than the molecules that are at low temperature.
As such, the higher temperature of the molecules of the gas in B shows that the molecules in B are faster than those in A thus the correct statement is; "the average kinetic energy of the gas particles is greater in container B because it has a higher temperature."
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Missing parts;
The picture shows two containers filled with a gas.
Two equally sized containers are shown with tight lids and each container has a thermometer. The container on the le is labeled A and the one on the right is labeled B. The thermometer inside container B shows a higher temperature than the thermometer inside container A.
Which statement is correct?
The average kinetic energy of the gas particles is greater in container A because it has a lower temperature.
The average kinetic energy of the gas particles is greater in container B because it has a higher temperature.
The gas particles in both containers have the same average kinetic energy because t have the same volume.
The gas particles in both containers have the same average kinetic energy because t have equal number of particles.
How much heat is needed to melt 100.0 grams of ice that is already at 0°C?
Group of answer choices
A. +33,400J
B. -226,000 J
C. +226,000 J
D. -33,400J
Taking into account the definition of calorimetry and latent heat, the heat needed to melt 100.0 grams of ice that is already at 0°C is 33,400 J (option A).
CalorimetryCalorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.
Latent heatLatent heat is defined as the energy required by a quantity of substance to change state.
When this change consists of changing from a solid to a liquid phase, it is called heat of fusion and when the change occurs from a liquid to a gaseous state, it is called heat of vaporization.
In this case, the heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to
Q = m×L
where L is called the latent heat of the substance and depends on the type of phase change.
Heat needed to melt iceIn this case, you have to melt the ice into liquid water.Being the specific heat of melting of ice is 334 J/g, the heat needed to melt 100 grams of ice is calculated as:
Q= 100 grams× 334 J/g
Solving:
Q= 33,400 J
In summary, the heat needed to melt 100.0 grams of ice that is already at 0°C is 33,400 J (option A).
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How many grams of calcium chloride are needed to produce 1.50 g of potassium chloride? cacl2(aq) k2co3(aq) → 2 kcl(aq) caco3(aq)
Answer:
1.12 g CaCl₂
Explanation:
To find the mass of calcium chloride, you need to (1) convert grams KCl to moles KCl (via molar mass), then (2) convert moles KCl to moles CaCl₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles CaCl₂ to grams CaCl₂ (via molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value.
Molar Mass (KCl): 39.098 g/mol + 35.453 g/mol
Molar Mass (KCl): 74.551 g/mol
Molar Mass (CaCl₂): 40.078 g/mol + 2(35.453 g/mol)
Molar Mass (CaCl₂): 110.984 g/mol
1 CaCl₂(aq) + K₂CO₃(aq) -----> 2 KCl(aq) + CaCO₃(aq)
1.50 g KCl 1 mole 1 mole CaCl₂ 110.984 g
----------------- x ----------------- x ----------------------- x ------------------ =
74.551 g 2 moles KCl 1 mole
= 1.12 g CaCl₂
Amount of H2SO4 in 2 litres, having 28% concentration solution
Answer:
The amount of H2SO4 in 2 litres is 560gm.
Explanation:
Given,
mass of sulphuric acid / volume of solution =28%
Therefore, mass of sulphuric acid in 100 ml solution is 28 grams.
We know that,
volume of solution is 2000ml.
Thus,
mass of sulphuric acid in 2000ml is
(28/100) ×2000
=28×20
=560gm
Thus, the mass of sulphuric acid is 560gm.
What is the element that is located in the 2nd Period and a Halogen?
Group of answer choices
A. Oxygen
B. Nitrogen
C. Flourine
D. Chlorine
Answer:
C.) Fluorine
Explanation:
A period describes a row on the periodic table.
Halogens are located in the 17th column on the periodic table.
As such, the element located in the second row in the 17th column is fluorine.
What is the [H3O+] if the [OH-] is 1 x 10 -11 ?
Taking into account the definition of pH and pOH, [H₃O⁺] will be 1×10⁻³ M.
Definition of pHpH is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
The pH is defined as the negative base 10 logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions or H₃O⁺:
pH= - log [H⁺]= - log [H₃O⁺]
Definition of pOHSimilarly, pOH is a measure of hydroxyl ions in a solution and is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:
pOH= - log [OH⁻]
Relationship between pH and pOHThe following relationship can be established between pH and pOH:
pOH + pH= 14
Hydroxide ion concentrationIn this case, you know that [OH⁻]= 1×10⁻¹¹ M.
Replacing in the definition of pOH, it is calculated as:
pOH= - log (1×10⁻¹¹ M)
Solving;
pOH= 11
Replacing in the relationship established between pH and pOH, the pH can be calculated as:
pH + 11= 14
Solving:
pH= 14 - 11
pOH= 3
Replacing in the definition of pH the concentration of H₃O⁺ ions is obtained:
- log [H₃O⁺]= 3
Solving:
[H₃O⁺]= 10⁻³
[H₃O⁺]= 1×10⁻³ M
In summary, [H₃O⁺] will be 1×10⁻³ M.
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Give the answer the problem below to the correct number of significant figures. Explain your results.
(329.5/0.45)-23.2
The correct number of significant figures gotten from the result of (329.5/0.45)-23.2 is infinite because there is no uncertain digit as a result of the answer being 709.022222222 when calculated.
What is a Significant figure?These refers to the digits which contributes to the degree of accuracy of a value and is usually counted starting from the non zero digits. In cases where the zero is between other numbers it is regarded as being significant such as 70.0111 in which the number of significant figures is six.
The result gotten from the expression (329.5/0.45)-23.2 is 709.022222222 which has a recurring decimal thereby making it difficult to calculate the number of recurring decimal.
Therefore it has infinitely many significant figures because there is no uncertain digit.
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Both flowering and nonflowering plants possess specialized structures that help them in reproduction. Conifers are nonflowering plants that possess special
to carry out reproduction. When conifers reproduce using these special structures, it is a form of
.
Conifers are non flowering plants that possess special cones to carry out reproduction. When conifers reproduce using these special structures, it is a form of Sexual reproduction.
How do conifers reproduce?Conifers are among the oldest living gymnosperms.These are a group of cone bearing seed plants.Typically, conifers are evergreen trees with needle-like leaves. E.g.: pine treesFlowering plants and conifers can reproduce by 2 main ways: sexual reproduction by means of seeds and asexual reproduction by means of separating and rooting part of a plant.However, seed production in conifers differs from that in flowering plants as conifers do not have showy petals like flowering plants. For sexual reproduction, conifers have male cones which produce pollen and female cones which contain ovules that develop into seeds. Gymnosperms (conifers) do not have their seeds enclosed in a fruit, unlike flowering plants. Instead, their seeds lie uncovered between a female cone's scales.Learn more about gymnosperms here:
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You have a 473 mL glass of lemonade with a concentration of 2.37 M.
The lemonade sits out on your counter for a couple of days, and 150 mL of water evaporates from the glass.
What is the new concentration of the lemonade?
The new concentration of the lemonade solution, given the data from the question is 3.47 M
Data obtained from the questionFrom the question given above, the following data were obtained:
Molarity of stock solution (M₁) = 2.37 MVolume of stock solution (V₁) = 473 mLVolume of water that evaporated = 150 mLVolume of new solution (V₂) = 473 - 150 = 323 mL Molarity of new solution (M₂) =? How to determine the molarity of the new solutionThe molarity of the new solution can be obtained by using the dilution formula as shown below:
M₁V₁ = M₂V₂
2.37 × 473 = M₂ × 323
1121.01 = M₂ × 323
Divide both side by 323
M₂ = 1121.01 / 323
M₂ = 3.47 M
Thus, the concentration of the new solution is 3.47 M
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Write a balanced equation for the following redox reaction using the oxidation number method:
Fe 2+ (aq) + H2O2 (aq) + H+ (aq) ---> Fe 3+ (aq) + H2O (l)
The balanced redox reaction equation is 2Fe^2+ (aq) + H2O2 (aq)+2H + (aq) → 2Fe^3+ (aq)+2e + 2H2O(l).
What is a redox reaction equation?A redox reaction equation is one in which there is a loss or gain of electrons. We can see that the oxidation number of some species is increased while the oxidation number of some species is reduced.
The oxidation half equation is written as; 2Fe^2+ (aq)→2Fe^3+ (aq)+2e
The reduction half equation is written as; H2O2 (aq)+2H + (aq)+2e →2H2O(l).
Thus, the overall balanced redox reaction equation is written as;
2Fe^2+ (aq) + H2O2 (aq)+2H + (aq) → 2Fe^3+ (aq)+2e + 2H2O(l).
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perform the following operation and express the answer in scientific notation 9.80x10^-3 + 1.60 x 10^-4
answer = 9.96x10^-3
I hope that help you
what is the correct iupac name for the following structure ch3-ch2-ch=ch2
The correct IUPAC name of the following structure CH3-CH2-CH=CH2 is But - 1 - ene
IUPAC rules for alkene nomenclatureThe parent alkene is chosen to have the longest carbon chain containing the carbon-carbon double bond.The alkane's suffix "ane" is changed to "ene." An alkene is referred to as a diene or triene depending on whether a double bond appears twice or three times in the parent chain.the location of side chains or double bonds denoted by the numbers 1, 2, 3, etc.The carbon atom in the double bond, which is written directly before the suffix "ene," receives the lowest number because it is the longest chain and is numbered from that end. If both sides of a double bond receive the same number as the chain is being numbered, the carbon chain is numbered so that the substituent receives the lowest number.Hence the structure CH3-CH2-CH=CH2 is named on the basis of the above rule as but - 1 - ene.
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A student investigated the enthalpy of combustion (deltaHc) of methanol under standard conditions using the apparatus shown in the diagram. The measurements the student recorded are shown in the table. Use this information to answer the questions below.
_Clamp stand
_
_ _I__Thermometer
_ I I Beaker
_ I-----I
_ I___I Water
_ I Wick
_ -----
_ I I
_ ----- Alcohol
_ I __I
______________
Alcohol mass before burning: 80.6g
Alcohol mass after burning: 75.9g
Water heated: 100g
Methanol Mr: 32
Initial temperature of water: 21.5 C
Final temperature of water: 32.4 C
Enthalpy of combustion of 1 mole of methanol:
The student wanted to know if the value obtained in part 1 is similar to that calculated using average bond enthalpy data.
a) Using the balanced equation and the data in the table below, calculate the theoretical enthalpy of combustion.
Note: you will need to include the enthalpy of vaporisation for the liquid components which are also given.
CH3OH(l) + 1.5O2(g) → CO2(g) + 2H2O(l)
Average Bond Enthalpies KJmol-1
C-H 412
C-C 348
C-O 358
O=O 496
C=O 743
O-H 463
Enthalpy of vaporisation KJmol-1
Methanol 35
Water 41
b) Suggest some reasons as to why this value is different to the one obtained in the practical. (What are the reasons that the the theoretical and actual enthalpy changes are different)
The Molar enthalpy of combustion of methanol obtained from the practical is -31.02 kJ/mol.
The molar enthalpy of combustion from bond energies, ΔH is -543 kJ/mol
The differences in the values could be due to:
Heat losses from the calorimeter to the surroundingsInaccurate measurements of mass and temperature changesWhat is the enthalpy theoretical and actual enthalpy of combustion of methanol?The actual enthalpy of combustion of methanol is calculated from the data obtained from the laboratory work.
The enthalpy of combustion is equal to the heat energy given off from the combustion of methanol.
Quantity of heat gained by water , q = -mcθ
where:
m = massc = specific heat capacityθ = temperature changemass of water heated = 100 g
specific heat capacity of water = 4.18 J/g/°C
temperature change = 32.4°C - 21.5°C = 10.9°C
q = -(100 * 4.18 * 10.9) J
q = - 4556.2 J
moles of methanol reacted = mass/molar mass
mass of methanol = 80.6 - 75.9 = 4.7 g
molar mass of methanol = 32 g/mol
moles of methanol = 4.7/32 = 0.14687 moles
Molar enthalpy of combustion of methanol = -4556.2 J/0.14687 mole
Molar enthalpy of combustion of methanol = -31.02 kJ/mol
Calculating molar enthalpy of combustion from bond energies:
ΔH = sum of the bond energies of bonds broken - sum of the bond energies of the bonds formedSum of bond energies of bonds broken = (3 * 412) + 358 + 463 + (1.5 * 496) + 35 = 2836 kJ/mol
Sum of bond energies of bonds formed = (2 * 743) + 2(2 * 463) + 41 = 3379 kJ/mol
ΔH = 2836 kJ/mol - 3379 kJ/mol
ΔH = -543 kJ/mol
The value obtained from the practical is less than that from the bond energies
b. The possible reasons for the difference in value obtained from the practical is less than that from the bond energies include:
Heat losses from the calorimeter to the surroundingsInaccurate measurements of mass and temperature changes.In conclusion, the molar enthalpy of combustion of methanol is negative since heat is given off during the reaction.
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Select the correct answer. A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? A. The ball experiences more force than the wall. B. The ball experiences less force than the wall. C. The ball and the wall experience the same force. D. The ball experiences half the force of the wall.
Answer:
C
Explanation:
For every action there is an equal but opposite reaction..... the forces are the same
Which of the following is the name given to a carbohydrate containing one monomer?
Disaccharide
Decasaccharide
Monosaccharide
Polysaccharide
Answer:
Disaccharide
Explanation:
When two monomers combine, a disaccharide is formed. Also, the prefix "di" is two therefore the answer must be a disaccharide
What would you need to do to calculate the molality of 0.2 kg of NaCl in 3 kg
of water?
A. Convert the 3 kg of water to moles of water.
B. Convert the 3 kg of water to liters of water.
C. Convert the 0.2 kg of NaCl to grams of NaCl.
D. Convert the 0.2 kg of NaCl to moles of NaCl
Answer:
D. Convert the 0.2 kg of NaCl to moles of NaCl
Explanation:
The molality equation looks like this:
Molality = moles of solute / mass (kg) of solvent
In this case, the solute is NaCl and the solution is water. So, if you have been given NaCl in kg, you need to convert it to grams and then to moles in order to plug it into the equation.