Answer:
The number of atom is 3.67*10^24 atoms
Explanation:
Molar mass of methane CH4 is 16.0g/mol
Using this to divide the mass
24.4g/16.0 = 1.525mol
1 mol CH4 contains 1 mol of Carbon C and 4 mol of hydrogen H, so 1.525mol contains 4(1.525)=6.1 molH
Using avogadro number : (6.1mol)(6.02*10^23)
= 3.67*10^24 atoms
There are 3.66 × 10^24 hydrogen atoms in 24.4 g of methane (CH4). This is calculated by first finding the number of moles of CH4 and then using Avogadro's number to determine the total number of molecules, which is finally multiplied by 4 (the number of hydrogen atoms per CH4 molecule).
The question asks how many atoms of hydrogen are in 24.4 g of methane (CH4). Methane has a molecular formula of CH4, indicating that each molecule contains 4 hydrogen atoms. The molar mass of methane is 16.04 g/mol (12.01 g for carbon + 4 × 1.008 g for hydrogen).
First, calculate the number of moles of methane:
24.4 g CH4 × (1 mol CH4 / 16.04 g CH4) = 1.52 mol CH4
Then, multiply by Avogadro's number to find the total number of methane molecules:
1.52 mol CH4 × (6.022 × 1023 molecules/mol) = 9.15 × 1023 molecules of CH4
Since each molecule of methane has 4 hydrogen atoms, we get:
9.15 × 1023 molecules CH4 × (4 H atoms/molecule) = 3.66 × 1024 hydrogen atoms.
a) as a liquid
b) as a gas
The actual atomic radius of Adamantium is 327pm. The experimentally estimated value of atomic radius of adamantium is 312pm. The percent error can be calculated as,
Percent error = (actual value-estimated value)/actual value *100
= 327-312/327*100
=Approx. 5 percent error in their prediction.