All of the ________ have a valence shell electron configuration ...

[Frost2351]

All of the ________ have a valence shell electron configuration ns1.
 
  A) noble gases
  B) halogens
  C) chalcogens
  D) alkali metals
  E) alkaline earth metals

Question 2

How much heat is absorbed/released when 35.00 g of NH3(g) reacts in the presence of excess (g) to produce NO(g) and H2O(l) according to the following chemical equation? 4 NH3(g) + 5 O2(g)  4 NO(g) + 6 H2O(l) H = 1168 kJ
 
  A) 600.1 kJ of heat are absorbed.
  B) 600.1 kJ of heat are released.
  C) 2400 kJ of heat are absorbed.
  D) 2400 kJ of heat are released.

Question 3

How many moles of Na+ are present in 343 mL of a 1.27 M solution of Na2SO4?
 
  A) 0.436
  B) 0.871
  C) 1.31
  D) 3.70
  E) 11.1

Question 4

Compounds composed of a salt and water combined in definite proportions are known as ________.
 
  A) clathrates
  B) homogenates
  C) ionic solids
  D) molecular solids
  E) hydrates

[durant1234]

Answer to Question 1

D

Answer to Question 2

A

Answer to Question 3

B

Answer to Question 4

E

[Frost2351]

Both answers were spot on, thank you once again

[durant1234]

Great! Please up vote