Mass percentage is defined as the ratio of mass of the element to the total mass of the compound.
The formula of mass percentage is given by:
Mass percentage = (1)
mass of nitrogen = 56.00 grams
Let x be the total mass of the compound.
Put the given values in formula (1):
x=
x= 151.92 g
total mass of the compound = 151.92 g
To calculate the mass of oxygen in grams, subtract the mass of nitrogen from the total mass of the compound.
Mass of oxygen = 151.92 g - 56 .00 g = 95.92 g
Thus, mass of oxygen in grams = 95.92 grams.
They do not change the nature of the substance unless a chemical change occurs along with the physical change. These may be irreversible, but the result is still composed of the same molecules. When you cut your hair, that is a physical change, even though you can't put the hair back on your head again
Answer:
These all are physical properties except reaction with water.
Explanation:
We need to use the following formula
Δ
n= 4 moles
F= constant= 96500C/mol
let's plug in the values.
ΔG= -(4)(96500)(0.24)=
-92640 J or -92.6 kJ
Explanation:
5) Le Chatelier's principle says, when in a reversible reaction any of the concentration or temperature or pressure are changed, then the equilibrium shifts such a way to nullify the changes occurred. (hope you get it)
<h3 /><h3>6) 1.change in concentration </h3>
R ======= P
if concentration of reactant R is increased then eqm shifts towards the one with lower concentration ,that is product P.
<em><u>forward</u></em><em><u> </u></em><em><u>dire</u></em><em><u>ction</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>favoured</u></em><em><u>.</u></em>
<h3 /><h3>2.Change in temperature</h3>
if the above's reaction is endothermic,<em> </em>that is temp of product is low. So increasing temperature in such case reaction goes towards product.
<em><u>forward direction is favoured</u></em>.
If reaction is exothermic ,temp of reactant is more. So increasing temperature in such case, reaction goes towards reactants.
<em><u>forward direction is favoured</u></em>
<em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em> </em>plz brainliest my answer I definitely write you the complete explanation asap!