Answer:
0.76 moles
Explanation:
mole = mass ÷ molar mass
mass = 143.50
molar mass = 189.36
189.36÷143.50 = 0.757 = 0.76
The reaction is as follows:
N2+3H2---->2NH3
the number of moles of N2 is 49.8g/14gmol^-1=3.56mol
the number of moles of H2 is 10.7g/2gmol^-1=5.35mol
here, since the ratio of N2/H2 is 1/3, we can see that H2 is the limiting reagent. therefore, the reaction proceeds as follows:
N2 + 3H2 ---------------> 2NH3
5.36mol (2/3)(5.36mol)=3.57mol
therefore, the number of moles of ammonia formed is 3.57mol. at STP, P=1atm, T=273K.
Therefore, V(NH3)=(3.57)(22.38)=79.822 L
Answer:
Explanation:
the number above the letter is the atomic number and the other on the bottom is the atomic mass . and the mass number is the atomic mass . and protons is the number above the letter along with neutrons electrons you just do atomic mass - atomic number = electrons
example 1 -2= 1 so there is the atomic number of 1 and atomic mass of 2
let me know if this helps
Defined as a phenomenon of liberation of electron from the surface that is stimulated by temperature elevation, radiation, or by strong electric field.
Answer:
A
Explanation:
The independent variable only changes when whoever is conducting the experiment changes it, When it does change, it changes the dependent variable