Mole
Conversions
Conversions
6.022 x 1023 is called ________.
What is "Avogadro's Number"?
If the number of moles of a gas is decreased by 1/4 then the pressure of the gas will ______.
What is "decrease by 1/4"?
In order to calculate percent composition you need the _____ of each element.
What is "molar mass"?
Empirical formulas are great examples of formulas that abide by the law of ________.
What is "definite proportions"?
Molecular formulas are great examples of formulas that follow the law of _____.
What is "Multiple Proportions"?
What is "dry"?
1 mole of Carbon is ______ g
What is "12.01"?
A mole is equal to _____ L
What is "22.4 L"?
What mass of carbon particles would exert a pressure of 345 kPa inside a 72 L container at 225 K?
What is "570 g"?
What is the percent composition of potassium, chlorine and oxygen in KClO?
What is "43.18 % K, 39.15 % Cl and 17.67 % O"?
The first step of finding the empirical formula is to convert your ____ into _____.
What is "percentages" and "mass"?
The molecular name of an unknown substance whose empirical formula is B2H5 and experimental molar mass of 54.00 g/mol is ______.
What is "Tetraboron decahydride"?
What is "Iron (III) phosphate heptahydrate"?
1 mole of Ammonium is _______g
What is "17.034"?
How many moles are in 90.5g of Magnesium sulfate?
What is "0.752 moles"?
If a container with a volume of 60.0 L holds 3.00 moles of gas at a temperature of 400 K, what is the pressure in kPa?
What is "200 kPa"?
The mass in oxygen in 250 g KClO is ______g
What is "44 g"?
The empirical formula of a compound that contains 23.3% Mg, 30.7% S and 46.0% O is ______.
Rounding rules:
0,1,2,8,9 = round to nearest whole number
4,5 = multiply all answers by 2
3,6,7 = multiply all answers by 3
What is "MgSO3"?
The name for an unknown substance whose empirical formula is CH2 and experimental molar mass is 28.00 g/mol is ____.
What is "Dicarbon tetrahydride"?
The formula for "Tin (IV) sulfate tetrahydrate" is _______.
What is "Sn(SO4)2 * 4H2O"?
1 mole of Tin (IV) sulfide is ______g
What is "182.29"?
How many formula units are in 38g of Ammonium chloride?
What is "4.3 x 1023"?
1.90 moles of gas are held at a pressure of 5.00 atm in a 50.0 L container. What is the temperature of the gas?
What is "1.60 x 103 K"?
The percent composition of nitrogen in ammonium nitrate is _____.
What is "35%"?
The empirical formula for compound that is 36.2% aluminum and 63.8% sulfur is _____.
Rounding rules:
0,1,2,8,9 = round to nearest whole number
4,5 = multiply all answers by 2
3,6,7 = multiply all answers by 3
What is "Al2S3"?
A hydrate of sodium carbonate has a mass of 4.31 g before heating. After heating, the mass of the anhydrous compound is 3.22 g. That means that the formula of the hydrated compound is _____.
What is "Na2CO3 * 2H2O"?
1/2 mole of calcium carbonate is _______g
What is "50.045"?
5 moles of zinc equals _____g and _______atoms
What is "300" and "3 x 1024"
The pressure in kPa of 2.00 x 10-5 g of nitrogen gas with a volume of 3.50 L at 22.0 C is _____.
What is "5.00 x 10-4 kPa"?
15.6 g of Mg combine completely with 5.02 g of N to form a compound; The percent composition of Mg is ___ and N is ____.
What is "75.7% Mg" and "24.3% N"?
A compound that contains 28.5% Fe, 48.6% O and 22.9% S is ______.
Rounding rules:
0,1,2,8,9 = round to nearest whole number
4,5 = multiply all answers by 2
3,6,7 = multiply all answers by 3
What is "Fe2(SO4)3"?
Anhydrous lithium perchlorate (4.78 g) was dissolved in water and crystalized. The mass of the hydrated crystal was 7.21 g. The name for this hydrated compound is _____.
What is "lithium perchlorate trihydrate"?
2 moles of sodium chloride added to 3 moles of oxygen gas is ______g
What is "212.88"?