27 1/3 days, 24 hours
27 1/3 days, 29 1/2 days
365 1/4 days, 29 1/2 days
24 hours, 29 1/2 days
thank you for your time
A) 7 g
B) 10 g
C) 30 g
D) 70 g
Answer:
b) 10 g
Explanation:
Hi, the answer in simply: during a chemical reaction (that doesn't involve nuclear processes) the total mass involved is constant.
The total mass of the reactants equals the total mass of the products, althought the number of molecules may vary.
n(2Fe2O3)=10g/319.374amu=0.03mol
n(4Fe+3O2)=0.03 mol
m(4Fe+2O2)=Mn=319.374×0.03=9.58=10
AgNO3 + NaCI -> AgCI + NaNO3