Answer:
The answer is 3
C2H5OH + O2 CO2 +H2O (unbalanced)
C2H5OH +3O2(g). 2CO2(g)+3H2O(balanced)
Answer:
for number of neutrons it is mass number take away the atomic number
number of electron is the same as number of proton unless there is a charge like +2 it will have 2 less electron than the proton (atomic number ) number.
number of proton is the atomic number
Explanation:
hope it make sense:)
Answer: 1.21x10²³ formula units Ca( ClO3)2
Explanation: solution attached:
Convert mass of Ca(ClO3)2 to moles
Convert moles of Ca(ClO3)2 to formula units using Avogadro's number
Answer:
First shell is lower
Explanation:
The electron has to absorb energy to excite and go to higher energy levels/ shells and should release energy to go to lower energy levels/ shells. This means higher the shell , more energy is required and vice versa
Answer:
254.7 g
Explanation:
Hg(ONC)2 -----------> Hg + N2 + 2CO
In every problem of stoichiometry, we must commence with writing the balanced reaction equation as a guide to our calculation. Once we have written the reaction equation, we can now proceed with the solution.
Amount of CO produced= mass of CO produced/ molar mass of CO
Molar mass of CO = 28 gmol-1
Mass of CO produced= 50.2g
Amount of CO produced= 50.2g/28gmol-1
Amount of CO produced= 1.79 moles of CO
From the reaction equation:
1 mole of Hg(ONC)2 produced 2 moles of CO
x moles of Hg(ONC)2 will produce 1.79 moles of CO
x= 1.79 × 1 / 2
x= 0.895 moles of Hg(ONC)2
Molar mass of Hg(ONC)2 = 284.624 g/mol
Mass of Hg(ONC)2 = number of moles × molar mass = 0.895 moles × 284.624 g/mol
Mass of Hg(ONC)2 = 254.7 g