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How many grams of hydrogen are in 46 g of CH₄O?

a) 2 grams.
b) 6 grams.
c) 4.2 grams.
d) 5.8 grams.

1 Answer

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Final answer:

To calculate the grams of hydrogen in 46 g of CH₄O, we need to determine the molar mass of CH₄O and the hydrogen-to-CH₄O ratio. The molar mass of CH₄O is 32.05 g/mol, and the ratio of hydrogen to CH₄O is 4:1. Multiplying the mass of CH₄O by the ratio gives us 5.758 g of hydrogen.

Step-by-step explanation:

To calculate the number of grams of hydrogen in 46 g of CH₄O, we need to determine the molar mass of CH₄O and the ratio of hydrogen to CH₄O.

The molar mass of CH₄O is calculated as:

  • C = 12.01 g/mol
  • H = 1.01 g/mol (4 hydrogen atoms)
  • O = 16.00 g/mol

Adding up the molar masses, we get:

12.01 g/mol + 4(1.01 g/mol) + 16.00 g/mol = 32.05 g/mol

The ratio of hydrogen to CH₄O is 4:1. So, we can calculate the grams of hydrogen by multiplying the mass of CH₄O (46 g) by the ratio:

(4/32.05) x 46 g = 5.758 g

Therefore, there are 5.758 grams of hydrogen in 46 g of CH₄O.