Answer:
7 sig figs.
Explanation:
Hello,
By performing the given operation:
The result is:
Thus, we notice that 700.6652 has five non-zero digits which are eligible for significant figures. Moreover, those two zeros after the 7 also are eligible for significant sigures as they are to the right of the first non-zero digit (7). Therefore, the result contains seven (7) significant figures.
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Answer:
The balanced equation is given below:
CH4 + 2O2 → 2H2O + CO2
The coefficient of O2 and CO2 are 2 and 1 respectively.
Explanation:
CH4 + O2 → 2H2O + CO2
The above equation can be balanced as follow:
There are a total of 4 atoms of O on the right side and 2 atoms on the left. It can be balance by putting 2 in front of O2 as shown below:
CH4 + 2O2 → 2H2O + CO2
Now we can see that the equation is balanced.
Therefore, the coefficient of O2 and CO2 are 2 and 1 respectively.