ebecuase that is the only one that would make sense
Answer:
Exothermic Reaction
Explanation:
The test tube feels hot as a result of an increase in temperature of the surroundings. This means that due to the reaction between zinc metal and hydrochloric acid, heat was released. The hot test tube indicates that this is an exothermic reaction.
a puddle evaporating = physical change
adding food coloring to water = chemical change
cutting an apple = physical change
denting a piece of metal = physical change
dry ice sublimating = I think is chemical change
iron rusting = chemical change
limewater and carbon dioxide forming chalk = chemical change
water boiling = physical change
vinegar and baking soda making bubbles = chemical change
paper burning = chemical change
Your welcome. I do sincerely believe that these are correct.
Answer: The rate will increase by a factor of 9.
Explanation:
Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
Given: Order with respect to = 2
Order with respect to = 1
Thus rate law is:
k= rate constant
It is given that the initial concentration of NO is tripled while all other factors stayed the same
Thus the rate will increase by a factor of 9.
Answer:
the rate of reaction would decrease
Explanation: