Answer:
<u>399.88</u>
Explanation:
The molar mass is just the number of total mass of each atom of each element.
2 - Fe = (55.845 x 2) = 111.69
3 - S = (32.06 x 3) = 96.18
12 - O = (15.999 x 12) = 191.988
For oxygen, it's being added 12 times because there is 4 in the compound times the 3 on the outside.
Now, add all of them and you have your answer!
Answer:
Petroleum and treating meals.
Answer: Total pressure inside of a vessel is 0.908 atm
Explanation:
According to Dalton's law, the total pressure is the sum of individual partial pressures. exerted by each gas alone.
= partial pressure of nitrogen = 0.256 atm
= partial pressure of helium = 203 mm Hg = 0.267 atm (760mmHg=1atm)
= partial pressure of hydrogen =39.0 kPa = 0.385 atm (1kPa=0.00987 atm)
Thus
=0.256atm+0.267atm+0.385atm =0.908atm
Thus total pressure (in atm) inside of a vessel is 0.908
Answer:
Ni^2+(aq) + CO3^2-(aq) -----> NiCO3(s)
Explanation:
First let us put down the molecular equation of the reaction
Na2CO3(aq) + Ni(NO3)2(aq)----> 2NaNO3(aq) +NiCO3(s)
Hence ionically, we will have the reaction as;
Ni^2+(aq) + CO3^2-(aq) -----> NiCO3(s)
The ionic equation usually indicate the ions that actually take part in the reaction. They often lead to the formation of the solid product or precipitate.
The order ions that are no shown in the ionic reaction equation are called spectator ions.
Hence, the reaction shown in the answer is the ionic reaction equation for the mixing of nickel II nitrate and sodium carbonate.