Answer:
Oxygen Reacts with Iron to Form Rust is the Correct Answer
Answer:
A- Group 1/1A
Explanation:
In group 1A they are all highly reactive metals, which tarnish when exposed to air.
Answer:Pressure of NH3 increases at the rate of 160torr/hr
Explanation:
According to the equation below
N2H4 (g) + H2 (g) ==> 2 NH3 (g)
It shows that 1mol of N2H4 will gives 2mol of NH3
Therefore, if the partial pressure rate of N2H4 is 80torr/hr, the partial pressure of NH3 increases by 2×80=160torr/hr
Assuming that zinc displaces the hydrogen as the cation in HCl, and assumes its natural charge of 2+, it requires two Cl- to make the zinc chloride compound. Therefore, we know there need to be two HCl atoms in the equation, and that the resulting compound ZnCl2 requires us to account for two lost hydrogen atoms, which will come out as natural diatomic gas:
Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g)