Consider the following reaction (X = Cl or Br) which statement s is are correct? CH3CH2CH3 + X2CH3CHCH3--X + CH3CH2CH2--X
i. statistically the 1 halopropane should be the major isomer
ii. the 2 halopropane to 1 halopropane ratio is largest when X = Br
iii. the 2 halopropane to 1 halopropane ratio is largest when X = Cl
A. only Il
B. only Ill
C. I and II
D. I and III

b is the correct

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%