Chemical Formulas: Application

What type of formula gives you the simplest whole-number ratio of atoms in a compound?
1. empirical formula
2. molecular formula
3. ideal formula
4. baby formula
The mass of one mole of a compound is known as its
1. molar mass
2. atomic mass
3. metric mass
4. unknown mass
In an ionic compound, the chemical formula is generally the same as the
1. empirical formula
2. molecular formula
3. formula mass
4. molar mass
What is the percent composition of Li in LiBr?
1. 7.99%
2. 92.01%
3. 6.94%
4. 43.42%
What is the percent composition of Br in LiBr?
1. 7.99%
2. 92.01%
3. 6.94%
4. 43.42%
What is the percentage of carbon in C₁₄H₁₀?
1. 94.33%
2. 5.67%
3. 12.01%
4. 6.50%
What is the percentage of hydrogen in C₁₄H₁₀?
1. 94.33%
2. 5.67%
3. 12.01%
4. 6.50%
What is the percentage of nitrogen in NH₄NO₃?
1. 35.00%
2. 5.05%
3. 59.96%
4. 14.01%
What is the percentage of hydrogen in NH₄NO₃?
1. 35.00%
2. 5.05%
3. 59.96%
4. 14.01%
What is the percentage of oxygen in NH₄NO₃?
1. 35.00%
2. 5.05%
3. 59.96%
4. 14.01%
What is the percent of hydrogen in HNO₂?
1. 2.15%
2. 29.80%
3. 68.06%
4. 14.01%
What is the percent of nitrogen in HNO₂?
1. 2.15%
2. 29.80%
3. 68.06%
4. 14.01%
What is the percent of oxygen in HNO₂?
1. 2.15%
2. 29.80%
3. 68.06%
4. 14.01%
What is the percent of silver in Ag₂S?
1. 87.059%
2. 12.94%
3. 10.87%
4. 32.07%
What is the percent composition of sulfur in Ag₂S?
1. 87.059%
2. 12.94%
3. 10.87%
4. 32.07%
If a compound is 66.0% barium and 34.0% chlorine, what is the empirical formula?
1. BaCl
2. BaCl₂
3. Ba₃Cl₂
4. Ba₂Cl
A 0.858 g sample of an unknown substance is composed of 0.537 g of copper and 0.321 g of fluorine. What is the empirical formula?
1. Cu₃F₂
2. Cu₂F
3. Cu₅F₃
4. CuF₂
A 0.0082 g sample contains 0.0015 g of nickel and 0.0067 g of iodine. What is the empirical formula?
1. NiI₂
2. Ni₂I₃
3. NiI₃
4. NiI
What is the empirical formula for a compound that is 60.9% As and 39.1% S?
1. As₂S₃
2. AsS₂
3. As₃S₂
4. AsS
What is the emperical formula for a compound that is 76.89% Re and 23.12% O?
1. Re₂O₇
2. ReO
3. Re₇O₂
4. ReO₄
A 46.25 g sample contains 14.77 g of potasium, 9.06 g of oxygen, and 22.42 g of tin. What is the empirical formula?
1. K₂SnO₃
2. KSnO
3. KSn₂O₃
4. K₄Sn₂O₆
What is the molecular formula of a compound that has an empirical formula of C₂H₄S, and an experimental molar mass of 179?
1. C₆H₁₂S₃
2. C₂H₄S
3. CHS
4. C₄H₈S₂
What is the molecular formula of a compound that has an empirical formula of C₂H₄O, and an experimental molar mass of 176?
1. C₈H₁₆O₄
2. C₂H₄O
3. C₄H₈O₂
4. C₆H₁₂O₃
What is the molecular formula of a compound that has an empirical formula of C₂H₃O₂, and an experimental molar mass of 119?
1. C₄H₆O₄
2. C₂H₃O₂
3. C₆H₉O₆
4. C₈H₁₂O₈
What is the molecular formula of a compound that has an empirical formula of C₂H₂O, and an experimental molar mass of 254?
1. C₁₂H₁₂O₆
2. C₄H₄O₂
3. C₂H₂O
4. C₆H₆O₃
What is the molecular formula for a compound that is 41.39% carbon, 3.47% hydrogen, and 55.14% oxygen, and an experimental molar mass of 116.07?
1. C₄H₄O₄
2. C₄H₃O₅
3. C₂H₂O₂
4. C₆HO₆
What is the molecular formula for a compound that is 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen, and an experimental molar mass of 88?
1. C₄H₈O₂
2. C₄HO₂
3. C₅H₂O₃
4. C₁₀H₂O₅
What is the molecular formula for a compound that is 64.27% carbon, 7.19% hydrogen, and 28.54% oxygen, and an experimental molar mass of 168.19?
1. C₉H₁₂O₃
2. C₁₂H₂O₄
3. C₃H₄O
4. C₆H₈O₂
What is the formula mass for C₂H₄?
1. 28.06
2. 13.02
3. 14.02
4. 106.14
What is the formula mass for C₆H₃Cl₃?
1. 181.44
2. 118.44
3. 48.47
4. 581.64
What is the formula mass for B₄H₁₀?
1. 53.34
2. 46.14
3. 48.52
4. 57.61
What is the formula mass for Al₂S₃?
1. 150.14
2. 118.08
3. 145.06
4. 194.25
What is the formula mass for Nb₅O₂?
1. 496.55
2. 556.94
3. 659.45
4. 412.08
What is the formula mass for Fe₂(SO₄)₃?
1. 886.24
2. 911.82
3. 688.42
4. 399.88
What is the number of formula units in 4.27 moles of WO₃?
1. 2.57 X 10 ²⁴
2. 4.7 X 10 ²³
3. 2.57
4. 4.27
What is the number of molecules in 0.989 moles of C₆H₅NO₂?
1. 5.96 X 10 ²³
2. 6.02 X 10 ²³
3. 9.89 X 10 ²³
4. 6.95 X 10 ²³
What is the number of molecules in 1500 moles of N₂H₄?
1. 9.0 X 10 ²⁶
2. 9.0 X 10 ²³
3. 6.02 X 10 ²³
4. 6.02 X 10 ²⁶
What is the number of formula units in 0.00300 moles of Sr(NO₃)₂?
1. 1.81 X 10 ²¹
2. 6.02 X 10 ²³
3. 3.00 X 10 ²¹
4. 5.96 X 10 ²³
What is the mass, in grams, of 3.00 moles of SeOBr₂?
1. 764 g
2. 254.76 g
3. 84.92 g
4. 467 g
What is the mass, in grams, of 488 moles of calcium carbonate?
1. 4.88 X 10 ⁴ g
2. 488 X 10 ⁴ g
3. 6.02 X 10 ²³ g
4. 4.88 X 10 ⁴ g
5. 160.1 g
What is the mass, in grams, of 6.00 X 10^-8 moles of nicotine (C₁₀H₁₄N₂)?
1. 9.74 X 10 ^-6 g
2. 6.02 X 10 ²³ g
3. 162.24 g
4. 973.44 g

Chemical Formulas: Application

Multiple-Choice ExerciseContent © 2006 Melanie Cecere; Authors of Activity: Melanie Cecere & Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.

What type of formula gives you the simplest whole-number ratio of atoms in a compound?

The mass of one mole of a compound is known as its

In an ionic compound, the chemical formula is generally the same as the

What is the percent composition of Li in LiBr?

What is the percent composition of Br in LiBr?

What is the percentage of carbon in C14H10?

What is the percentage of hydrogen in C14H10?

What is the percentage of nitrogen in NH4NO3?

What is the percentage of hydrogen in NH4NO3?

What is the percentage of oxygen in NH4NO3?

What is the percent of hydrogen in HNO2?

What is the percent of nitrogen in HNO2?

What is the percent of oxygen in HNO2?

What is the percent of silver in Ag2S?

What is the percent composition of sulfur in Ag2S?

If a compound is 66.0% barium and 34.0% chlorine, what is the empirical formula?

A 0.858 g sample of an unknown substance is composed of 0.537 g of copper and 0.321 g of fluorine. What is the empirical formula?

A 0.0082 g sample contains 0.0015 g of nickel and 0.0067 g of iodine. What is the empirical formula?

What is the empirical formula for a compound that is 60.9% As and 39.1% S?

What is the emperical formula for a compound that is 76.89% Re and 23.12% O?

A 46.25 g sample contains 14.77 g of potasium, 9.06 g of oxygen, and 22.42 g of tin. What is the empirical formula?

What is the molecular formula of a compound that has an empirical formula of C2H4S, and an experimental molar mass of 179?

What is the molecular formula of a compound that has an empirical formula of C2H4O, and an experimental molar mass of 176?

What is the molecular formula of a compound that has an empirical formula of C2H3O2, and an experimental molar mass of 119?

What is the molecular formula of a compound that has an empirical formula of C2H2O, and an experimental molar mass of 254?

What is the molecular formula for a compound that is 41.39% carbon, 3.47% hydrogen, and 55.14% oxygen, and an experimental molar mass of 116.07?

What is the molecular formula for a compound that is 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen, and an experimental molar mass of 88?

What is the molecular formula for a compound that is 64.27% carbon, 7.19% hydrogen, and 28.54% oxygen, and an experimental molar mass of 168.19?

What is the formula mass for C2H4?

What is the formula mass for C6H3Cl3?

What is the formula mass for B4H10?

What is the formula mass for Al2S3?

What is the formula mass for Nb5O2?

What is the formula mass for Fe2(SO4)3?

What is the number of formula units in 4.27 moles of WO3?

What is the number of molecules in 0.989 moles of C6H5NO2?

What is the number of molecules in 1500 moles of N2H4?

What is the number of formula units in 0.00300 moles of Sr(NO3)2?

What is the mass, in grams, of 3.00 moles of SeOBr2?

What is the mass, in grams, of 488 moles of calcium carbonate?

What is the mass, in grams, of 6.00 X 10-8 moles of nicotine (C10H14N2)?

Multiple-Choice Exercise
Content © 2006 Melanie Cecere; Authors of Activity: Melanie Cecere & Tami Maloney; All rights reserved. No commercial, for-profit use of this material is allowed. E-mail comments and questions to Tami Maloney.

What is the percentage of carbon in C₁₄H₁₀?

What is the percentage of hydrogen in C₁₄H₁₀?

What is the percentage of nitrogen in NH₄NO₃?

What is the percentage of hydrogen in NH₄NO₃?

What is the percentage of oxygen in NH₄NO₃?

What is the percent of hydrogen in HNO₂?

What is the percent of nitrogen in HNO₂?

What is the percent of oxygen in HNO₂?

What is the percent of silver in Ag₂S?

What is the percent composition of sulfur in Ag₂S?

What is the molecular formula of a compound that has an empirical formula of C₂H₄S, and an experimental molar mass of 179?

What is the molecular formula of a compound that has an empirical formula of C₂H₄O, and an experimental molar mass of 176?

What is the molecular formula of a compound that has an empirical formula of C₂H₃O₂, and an experimental molar mass of 119?

What is the molecular formula of a compound that has an empirical formula of C₂H₂O, and an experimental molar mass of 254?

What is the formula mass for C₂H₄?

What is the formula mass for C₆H₃Cl₃?

What is the formula mass for B₄H₁₀?

What is the formula mass for Al₂S₃?

What is the formula mass for Nb₅O₂?

What is the formula mass for Fe₂(SO₄)₃?

What is the number of formula units in 4.27 moles of WO₃?

What is the number of molecules in 0.989 moles of C₆H₅NO₂?

What is the number of molecules in 1500 moles of N₂H₄?

What is the number of formula units in 0.00300 moles of Sr(NO₃)₂?

What is the mass, in grams, of 3.00 moles of SeOBr₂?

What is the mass, in grams, of 6.00 X 10^-8 moles of nicotine (C₁₀H₁₄N₂)?