HELP. chemistryy

1.3 g of zinc reacts with excess sulphuric acid. Calculate the volume of hydrogen gas formed at

s. t.p.

[ RAM : Zn=65 ; 1 mole of gas occupies a volume of 22.4 dm3

at s. t.p. ]

A 112 cm3 B 224 cm3

C 336 cm3 D 448 cm3

the role of the microscope world in creating new materials .

it is a solid

explanation:

12 is it do you think so

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