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Question 7 Calculate the empirical formula of a compound that contains 67.9% carbon, 5.7 % H and 26.4 % N. When entering the formula place in the following order: carbon, hydrogen, nitrogen. For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O Question 8 A 25.0 g sample of a compound is found to contain 6.075 g carbon, 1.025 g hydrogen, and 17.9 g chlorine. Its molar mass is determined to be 99 g/mol. What is the molecular formula for this compound? For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O

          Question 7
Calculate the empirical formula of a compound that contains 67.9% carbon, 5.7 % H and 26.4 % N. When entering the formula place in the following order: carbon, hydrogen, nitrogen.
For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O

Question 8
A 25.0 g sample of a compound is found to contain 6.075 g carbon, 1.025 g hydrogen, and 17.9 g chlorine. Its molar mass is determined to be 99 g/mol. What is the molecular formula for this compound?
For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O

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Question 7
Calculate the empirical formula of a compound that contains 67.9% carbon, 5.7 % H and 26.4 % N. When entering the formula place in the following order: carbon, hydrogen, nitrogen.
For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O

Question 8
A 25.0 g sample of a compound is found to contain 6.075 g carbon, 1.025 g hydrogen, and 17.9 g chlorine. Its molar mass is determined to be 99 g/mol. What is the molecular formula for this compound?
For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O

Added by Mary O.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Jorge Villanueva

07/22/2022

Step 1

1. **Convert percentages to grams** (assuming 100 g of the compound): - Carbon: 67.9 g - Hydrogen: 10.0 g - Nitrogen: 26.4 g 2. **Convert grams to moles**: - Moles of Carbon: \( \frac{67.9 \text{ g}}{12.01 \text{ g/mol}} = 5.655 \text{ moles} \) - Show more…

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Question 7 Calculate the empirical formula of a compound that contains 67.9% carbon, 5.7 % H and 26.4 % N. When entering the formula place in the following order: carbon, hydrogen, nitrogen. For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O Question 8 A 25.0 g sample of a compound is found to contain 6.075 g carbon, 1.025 g hydrogen, and 17.9 g chlorine. Its molar mass is determined to be 99 g/mol. What is the molecular formula for this compound? For subscripts, write the number after the element it corresponds to. For example, H2O should be written as H2O

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