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jaaiphieaslade
17.05.2020 •
Chemistry
What mass of ammonia is formed when 5.36 g of nitrogen gas reacts with excess hydrogen gas?
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Ответ:
that's hard
Explanation:
Ответ:
We can solve the question 'What is the empirical formula of the compound?' The answer is CH2
Explanation:
A 42.0g sample of compound containing only C and H was analyzed. The results showed that the sample contained 36.0g of C and 6.0g of H. Which of the following questions about the compound can be answered using the results of the analysis?
A) What was the volume of the sample?
B) What is the molar mass of the compound?
C) What is the chemical stability of the compound?
D) What is the empirical formula of the compound?
Step 1: Data given
Mass of the compound = 42.0 grams
⇒ 36.0 grams = carbon
⇒ 6.0 grams = hydrogen
Molar mass of carbon = 12.01 g/mol
Molar mass of hydrogen = 1.01 g/mol
Step 2: Calculate moles
Moles = mass / molar mass
Moles Carbon = 36.0 grams / 12.01 g/mol
Moles carbon = 3.00 moles
Moles hydrogen = 6.0 grams / 1.01 g/mol
Moles hydrogen = 5.95 moles
Step 3: Calculate mol ratio
We divide by the smallest number of moles
Carbon: 3.00 / 3.00 = 1
Hydrogen: 5.95 / 3.00 = 2
The empirical formula is CH2