Drugs used commonly by athletes and others to relieve pain ...

[BrownTown3]

Drugs used commonly by athletes and others to relieve pain include
 
  A) ketoprofen.
  B) heroin.
  C) cocaine.
  D) vitamin C.

Question 2

How many grams of calcium chloride are needed to produce 10.0 g of potassium chloride? CaCl2(aq) + K2CO3(aq)  2 KCl(aq) + CaCO3(aq)
 
  A) 0.134 g
  B) 7.44 g
  C) 14.9 g
  D) 29.8 g

Question 3

Sodium metal reacts with water to produce hydrogen gas and sodium hydroxide according to the chemical equation shown below. When 0.025 mol of Na is added to 100.00 g of water, the temperature of the resulting solution rises from 25.00C to 35.75C.
 
  If the specific heat of the solution is 4.18 J/(g  C), calculate H for the reaction, as written. 2 Na(s) + 2 H2O(l)  2 NaOH(aq) + H2(g) H= ? A) -5.41 kJ
  B) -90.0 kJ
  C) -180 kJ
  D) -364 kJ

Question 4

How many grams of sodium chloride are there in 55.0 mL of a 1.90 M aqueous solution of sodium chloride?
 
  A) 0.105
  B) 6.11
  C) 3.21
  D) 6.11  103
  E) 12.2

[verrinzo]

Answer to Question 1

A

Answer to Question 2

B

Answer to Question 3

D

Answer to Question 4

B

[BrownTown3]

TYSM

[helenmarkerine]

Gracias!