Multiple Choice
How much heat energy would be needed to raise the temperature of a 22.3 g sample of aluminum [(C = 0.895 (J/g°C) ] from 22.5°C to 55.0°C?
A) 20.0 J
B) 649 J
C) 725 J
D) 8.10 x 102 J
E) not enough information given
Correct Answer:
Verified
Correct Answer:
Verified
Q114: Consider the following reaction: CrCl<sub>3</sub>(s)+ KCl(s)+ 2H<sub>2</sub>SO<sub>4</sub>(l)→
Q115: When phosphorus reacts with chlorine, phosphorus trichloride
Q116: Given the balanced equation 4NH<sub>3</sub>(g)+ 5O<sub>2</sub>(g)→ 4NO(g)+
Q117: If the theoretical yield for a reaction
Q118: When potassium metal is exposed to air,
Q120: Nitrogen and hydrogen react together to form
Q121: Ammonia is usually made by the following
Q122: Consider the following reaction: Cr<sub>2</sub>O<sub>3</sub>(s)+ 3CCl<sub>4</sub>(l)→ 2CrCl<sub>3</sub>(s)+
Q123: An aqueous solution containing 15.0 g of
Q124: Which of the following processes is exothermic?<br>A)boiling