Answer:
The answer to your question is 114.7% the percent is higher than expected.
Explanation:
Data
mass of HCl = 10.5 g
molar mass of HCl = 36.5 g
mass of NaOH = 19.3 g
molar mass of NaOH = 58.5
Process
1.- Write the balanced chemical reaction
HCl + NaOH ⇒ NaCl + H₂O
2.- Calculate the theoretical yield
36.5 g of HCl -------------- 58.5 g of NaCl
10.5 g of HCl -------------- x
x = (10.5 x 58.5)/36.5
x = 16.83 g
3.- Calculate the percent yield
% yield = (19.3/16.83) x 100
% yield = 114.7
Answer: 61 grams
Explanation:
To calculate the number of moles, we use the equation:


The chemical equation for the combustion of octane in oxygen follows the equation:
By stoichiometry of the reaction;
25 moles of oxygen react with 2 moles of octane
4.69 moles of oxygen react with=
moles of octane
Thus, oxygen is the limiting reagent as it limits the formation of product and octane is the excess reagent.
25 moles of oxygen produce 18 moles of water
4.69 moles of oxygen produce=
moles of water.
Mass of water produced=
The maximum mass of water that could be produced by the chemical reaction is 61 grams.
Neutrons and protons are in the nucleus
electrons are on shells which orbit the nucleus
Velocity is explained as the *speed and *direction something might move. Speed means moving and Direction means a certain way (not stationary.)
Hope this helps!