Find the molecular formula of a compound of boron with hydrogen if the mass of 1 litre of this gas equals the mass of 1 litre of nitrogen under same condition and the boron content in the substance is 78.2%. (B=11, N=14, O=16)

Explanation

To find the molecular formula of a compound of boron with hydrogen, we can follow these steps:

### Step 1: Determine the molar mass of nitrogen
Given that the mass of 1 liter of the gas equals the mass of 1 liter of nitrogen under the same conditions, we can use the molar mass of nitrogen (N). The molar mass of nitrogen is 14 g/mol.

### Step 2: Calculate the molar mass of the gas
Since the mass of 1 liter of the gas is equal to the mass of 1 liter of nitrogen, we can conclude that the molar mass of the gas (the compound of boron and hydrogen) is also 14 g/mol.

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