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Lerok [7]
3 years ago
10

10 Points

Chemistry
1 answer:
Vera_Pavlovna [14]3 years ago
6 0

Answer:

C. Billions

Explanation:

or even more

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Why CH3Cl has tetrahedral shape
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2 years ago
What is the approximate percent by mass of potassium in KHCO3?
lozanna [386]

Answer:

The mass percent of potassium is 39%

Option C is correct

Explanation:

Step 1: Data given

Atomic mass of K = 39.10 g/mol

Atomic mass of H = 1.01 g/mol

Atomic mass of C = 12.01 g/mol

Atomic mass of O = 16.0 g/mol

Step 2: Calculate molar mass of KHCO3

Molar mass KHCO3 = 39.10 + 12.01 + 1.01 + 3*16.0

Molar mass KHCO3 = 100.12 g/mol

Step 3: Calculate mass percent of potassium (K)

%K = (atomic mass of K / molar mass of KHCO3) * 100%

%K = (39.10 / 100.12) * 100%

%K = 39.05 %

The mass percent of potassium is 39%

Option C is correct

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3 years ago
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8 0
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Now molecules: ____ molecules of H2 + ____ molecules of O2 → ____molecules of H2O
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Answer:

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