How many liters of gas are contained in 0.987 mols of krypton?

22.11 L

Explanation:

Data Given:

no. of moles of Krypton  = 0.987

Liters of Krypton gas (volume) = ?

Solution:

we will volume of gas

Formula used

          no. of moles = Volume of gas / Molar volume

Rearrange the above equation to find volume

          Volume of gas = no. of moles x Molar Volume . . . . . . (1)

Where

Molar volume = 22.4 L /mol

Put values in above equation 1

          Volume of gas = 0.987 mols x 22.4 L /mol

          Volume of gas = 22.11 L

So,

 Volume of Krypton gas = 22.11 L

the answer your looking for is c).

percent abundance for cu-63 can be shown as:

63 x + 65 (1-x) = 62.9296

65 - 62.9296 = 2 x

x = 1.035

thus, percent abundance for cu-63 is 1.035

percent abundance for cu-65 can be shown as:

63 x + 65 (1-x) = 64.9278

65 - 64.9278 = 2 x

x = 0.0361

thus, percent abundance for cu-63 is 0.0361

the mass spectrum of cu-63 showing the intense peak as, this isotope is found in nature more abundantly around 92.38 % in comparison to cu-65 which is found 62.58 % naturally