Let's say that you were asked to find the molecular formula for a compound given its
empirical formula, CH20, and the compound's
molar mass. The first step in solving such a problem is to
calculate the molar mass for the empirical
formula. What is the molar mass of CH20?
(C=12.01 amu, H=1.008 amu, O=16.00 amu)
[ ? ] g/mol CH20

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

24

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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