The answer is C. There are 6 Carbon (6x12.01=<span>72.06), 12 Hydrogen (12x1.01=12.12) and 6 Oxygen (6x16=96). Altogether 72.06,12.12 and 96 add to 180.18</span>
11.625 moles of Na₂O are produced.
<h3>What do you mean by the term mole ?</h3>
A mole is defined as the amount of a substance that contains exactly 6.02214076 × 10²³ ‘elementary entities’ of the given substance.
It can be represented by the following formula:
n = N/NA
To calculate moles of Na₂ O produced are -:
40 gm of sodium
3.00 gm of oxygen
4 Na+ O₂----->2Na₂O
First calculate limiting reagent,
Stochiometric ratio,
a/b=4/1
=4
Molar ratio,
M/n=4/22/3/22=4/22×32/3
=1.93
As a/b>m/n
So, sodium is limiting reagent
4 Na+ O₂----->2Na₂O
As 32 g of O₂ produced =124 g of Na₂O
SO,
3 gm of O₂ produced =124×3/32
=11.625 gm
11.625 gm of Na₂O can be produced .
Learn more about mole ,here:
brainly.com/question/22540912
#SPJ1
Answer:
C. a change in the total mass of the product
Explanation:
A chemical reaction is a reaction that alters the chemical composition of the substances involved. Based on the options in this question, a chemical reaction possess the following features:
- The atoms of the substance called reactants are rearranged into products but the total number of atoms remain the same after the reaction.
- A change in odor occurs as one of the indicators that a chemical reaction has taken place.
- Energy is either absorbed (endothermic) or released (exothermic) in the chemical reaction.
However, one untrue option is that "there is a change in the total mass of the product". The total mass of a chemical reaction does not change i.e. remains the same, before or after the reaction in accordance to the law of conservation of mass.
Answer:
the ability of a compound to dissolve
Explanation:
salt dissolves in water so it would be soluble.
oil does not dissolve in water so it is not soluble
