Answer:
Ch4 + 2O2 ----> CO2 + 2H2O
Explanation:
Ch4 has 4H, 1C
O2 has 2 O2
CO2 has 1 C, 2O
H2O has 1 H, 2O
you need to add 2 to O2 to balance it. Add 2 to H2O to balance the H and O
PWR stands for many things. Since you're talking about nuclear power reactors I think PWR stands for pressurized water reactor.
A pressurized water reactor follows many steps but the main goal is to obtain thermal energy from water.
Hope it helped,
BioTeacher101
Table slat has a low melting pointy while mercury has a high one
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Answer: B. False
Explanation: A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
Example:
Thus as we can see sodium ion 
is being replaced by ammonium ions 
and thus positive ions replace positive ions only and not negative ions.
