Question

1. The 69.5-g sample of the compound X3O4 contains 19.2 g of oxygen atoms. What is...

1. The 69.5-g sample of the compound X3O4 contains 19.2 g of oxygen atoms. What is the molar mass of element X?

? g/mol

2. Calculate the percent composition by mass of each element in NaClO4?

% Na = ? %

% Cl = ? %

% O = ? %

3. How many grams of Br are in 505 g of CaBr2?

? g

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A compound contains only carbon, hydrogen, and oxygen. Combustion of 91.88 g of the compound yields...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 91.88 g of the compound yields 134.7 g of CO2 and 55.13 g of H2O. The molar mass of the compound is 180.156 g/mol. 1. Calculate the grams of carbon (C) in 91.88 g of the compound: grams 2. Calculate the grams of hydrogen (H) in 91.88 g of the compound. grams 3. Calculate the grams of oxygen (O) in 91.88 g of the compound. grams 1. the moles of...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 65.76 g of the compound yields...
A compound contains only carbon, hydrogen, and oxygen. Combustion of 65.76 g of the compound yields 96.38 g of CO2 and 39.46 g of H2O. The molar mass of the compound is 90.078 g/mol. 1. Calculate the grams of carbon (C) in 65.76 g of the compound: 2. Calculate the grams of hydrogen (H) in 65.76 g of the compound. 3. Calculate the grams of oxygen (O) in 65.76 g of the compound. Based on your previous answers, calculate 1....
Molar Mass (g/mol) N 14.007 H 1.0080 A pure sample of a compound that contains phosphorus...
Molar Mass (g/mol) N 14.007 H 1.0080 A pure sample of a compound that contains phosphorus and oxygen weighs 1.164 g. If the sample is found to contain 0.508 g of phosphorus , what is the empirical formula of the compound? Molar Mass (g/mol) P 30.974 O 15.999 A pure sample of a compound that contains nitrogen and hydrogen weighs 1.555 g. If the sample is found to contain 1.359 g of nitrogen, what is the empirical formula of the...
An organic compound has a molar mass of 168.2 g/mol and contains 8.32% hydrogen atoms by...
An organic compound has a molar mass of 168.2 g/mol and contains 8.32% hydrogen atoms by mass. How many hydrogen atoms are in each molecule of this compund?
An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz ). Combustion of 4.50 g of...
An unknown compound contains only carbon, hydrogen, and oxygen (CxHyOz ). Combustion of 4.50 g of this compound produced 6.60 g of carbon dioxide and 2.70 g of water. If 4.50 g of the unknown compound contained 0.150 mol of C and 0.300 mol of H, how many moles of oxygen, O, were in the sample?
A 100−g sample of HgO contains 92.6 g mercury and 7.4 g oxygen. What mass of...
A 100−g sample of HgO contains 92.6 g mercury and 7.4 g oxygen. What mass of mercury atoms and what mass of oxygen atoms are contained in any 100−g sample of HgO? ___grams Hg atoms ___grams O atoms
1) A sample of C3H8 has 7.76 × 1024 H atoms. How many carbon atoms does...
1) A sample of C3H8 has 7.76 × 1024 H atoms. How many carbon atoms does the sample contain? What is the total mass of the sample? 2) Calculate the molar mass of each compound given below. Keep at least one decimal place in atomic masses from the periodic table. a. KBr g/mol: b.Na2s g/mol: 3) A chemist requires 0.885 mol Na2CO3 for a reaction. How many grams does this correspond to?
1.A 0.5538 g sample of a pure soluble bromide compound is dissolved in water, and all...
1.A 0.5538 g sample of a pure soluble bromide compound is dissolved in water, and all of the bromide ion is precipitated as AgBr by the addition of an excess of silver nitrate. The mass of the resulting AgBr is found to be 1.1298 g. What is the mass percentage of bromine in the original compound? % 2. A student determines the manganese(II) content of a solution by first precipitating it as manganese(II) hydroxide, and then decomposing the hydroxide to...
1. A compound contains only carbon, hydrogen and oxygen. It was found to contain 13.1% hydrogen...
1. A compound contains only carbon, hydrogen and oxygen. It was found to contain 13.1% hydrogen by mass and 34.7 % oxygen by mass. a. Calculate the mass percent of carbon in the compound. b. Assume 100 g of sample and calculate the number of moles of carbon, hydrogen and oxygen in the sample. c. Determine the empirical formula of the compound.
1. How many moles of atoms are contained in 21.0 g of Br2 ? 2. 1.28...
1. How many moles of atoms are contained in 21.0 g of Br2 ? 2. 1.28 x 1024atoms of S. (Calculate the number of grams) 3. How many atoms are contained in (5 molecules CH3COOH) and (12.0 mol H2O) 4. calculate the number of grams of hydrogen in 8.44 mol H2SO4 5. A. What is the element of ( 65.2 g sample of a compound containing 36.8 g silver, 12.1 g chlorine, and the rest, oxygen) B. compound containing 38.0...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT