Answer: Moles of hydrogen required are 4.57 moles to make 146.6 grams of methane, .
Explanation:
Given: Mass of methane = 146.6 g
As moles is the mass of a substance divided by its molar mass. So, moles of methane (molar mass = 16.04 g/mol) are calculated as follows.
The given reaction equation is as follows.
This shows that 2 moles of hydrogen gives 1 mole of methane. Hence, moles of hydrogen required to form 9.14 moles of methane is as follows.
Thus, we can conclude that moles of hydrogen required are 4.57 moles to make 146.6 grams of methane, .
The products that would be formed if chlorine gas was bubbled <span>through a solution of sodium bromide would be sodium chloride and bromine gas. The reaction would be written as:
2NaBr + Cl2 = 2NaCl + Br2</span>
Answer:The sample is 144 years old.
Explanation:We are given half life which is 72 years.