Assuming the question is asking for percent composition by mass,
The molar mass of sodium bicarbonate is:
22.990 + 1.008 + 12.011 + 3*15.999 = 84.006 g/mol
The molar mass of 3 oxygen atoms is:
3*15.999 = 47.997 g/mol
The percentage composition by mass is:
47.997/84.006 * 100% = 57.1% (3 s.f.)
First convert 0.163 grams of N2O to mol by dividing it with
the molecular weight. The molecular weight of N2O is 44 grams/mol. The answer
would be 3,79x10^-3. Then multiply it with 2 since there are 2 Nitrogen in one
mole of N2O. Therefore, there are 7.41x10^-3 moles of Nitrogen.
It is false because an endothermic reaction will also start when energy is received from the environment when there is no solution involved
Answer:
That would be the Alkali metals, and the Alkaline earth metals.
Explanation:
I just did 3.02 periodic table guided notes. np.
Brainliest is appreciated. thx.
-Hailey
Answer:
320K
Explanation:
PV=nRT
1.5atm(10.9L)=(0.620mol)(0.08206 L atm/ mol K)T
T=320K