A 0.02887 g sample of gas occupies 10.0 mL at 288.0 K and 1.10 atm. Upon further analysis, the compound is found to be 38.734 % C and 61.266 % F . What is the molecular formula of the compound?

 The molecular formula of the compound is

Explanation:

If percentage are given then we are taking total mass is 100 grams.

So, the mass of each element is equal to the percentage given.

Mass of C= 38.734 g

Mass of F = 61.266 g

Step 1 : convert given masses into moles.

Moles of C =

Moles of F =

Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.

For C =

For F =

The ratio of C : F = 1:1

Hence the empirical formula is

The empirical weight of = 1(12)+1(19)= 31 g.

Using ideal gas equation :

where,

n = number of moles of gas  = ?

P = pressure of the gas = 1.10 atm

T = temperature of the gas = 288.0  K

R = gas constant = 0.0821 L.atm/mole.K

V = volume of gas = 10.0 mL =0.01 L

Now we have to calculate the molecular formula.

The molecular formula will be=

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explanation:  

tariffs are a tax on anything that are imported from abroad. government use them to protect and boost their local industries and the thought is that they encourage consumers to buy local instead of importing and they will hope will protect jobs and economy in the country that implements them