Answer:
Assuming the reaction you are referring to is the following:
AgNO3 + Cu --> Cu(NO3)2 + Ag
First, we should balance the reaction:
2 AgNO3 + Cu --> Cu(NO3)2 + 2 Ag
Now we carry out dimensional analysis, taking into account the molar ratios of different species as given in the balanced reaction and molar masses (which we can look up in the periodic table).
We begin with what we know, which is that we have 16.0 g Cu reacting and work our way toward the quantity that we would like to calculate, namely moles of Ag.
16.0 g Cu x 1 mol Cu x 2 mol Ag = 0.504 mol Ag
63.5 g Cu 1 mol Cu
When a liquid absorbs heat energy without increasing its temperature is because it is using the absorbed heat for the change of phase from liquid to vapor. This is call vaporization. Vaporization requires energy because the molecules have to overcome the interaction that keeps them close to their neighbors in the liquid.So, <span>the answer is the option B.) it vaporizes.</span>
REDOX is the process whereby electrons are transfered from one specie to another, via oxidation-reduction.
In a chemical reaction, when one specie causes another to gain electrons, it is called a reductant (it gives electrons). This is an oxidation reaction, because it loses electrons of its own. While the other specie goes through reduction from gaining electrons.
2H2 +O2 ----> H2O
The primary product is water.
Unlike other reactions, combustion requires oxygen in order to occur.
This means that oxygen is a necessary condition for any combustion reaction to occur.
Based on the above, the difference between combustion reaction and other reactions is:
- It requires oxygen as an input or a medium to occur in
Hope this helps :)
