E sure you have your work written down, because each question will require a value and a 1 point
An inflatable pool toy occupies a volume of 12.59 L contains 2.333
moles of air at a pressure of 31.2 psi. What is the temperature of the
air in Kelvin, with 1 decimal point?
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chemistry sucks a**

explanation:

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

how important do you think an instrument is to the musician who plays it?