A sample of a gas occupies 460 mL at 70.0◦C and 1.00 atmosphere. At what temperature
would the gas occupy 650 mL at the same
pressure

it should be all of them because it asks if you included all of those in your answer

explanation:

put the answers   and i could answer.

b) nuclear ive learned that in a pedtrodic table

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