Answer:
a. Combustion.
b. 
c. 
Explanation:
Hello.
a. In this case, given the reaction by which propane is converted into carbon dioxide and water:
It is known as a combustion reaction since it is about a fuel (here propane) which is burnt by the oxygen contained in the air (21%).
b. Since the carbon dioxide contains all the carbon in the products based on the law of conservation of mass, the yielded grams are computed via a mole mass relationship:
Since 44 grams of carbon dioxide contain 12 grams of carbon.
c. As well as b., all the hydrogen is given off in form of water, thus, the required mass turns out:
Since 18 grams of water contain 2 grams of hydrogen.
Best regards.
I believe it is D my good friend.
The best way to obtain pure, solid household salt from a solid mixture of household salt and sand is to "add water, stir, filter and evaporate the filtrate".
<u>Option: C</u>
<u>Explanation:</u>
The salt and sand can be separated on the basis of solubility, as we know the salt is chemically known as sodium chloride, which have good solubility in water. The most general method is the mixture is taken into a flask or beaker and water is added with stirring, where salt get dissolved and sand remain as it is, because NaCl is capable enough to form hydrogen bonding with water, while sand have absence of such property. Then this solution containing insoluble sand is filtered by using filter paper. The sand is received in filter paper while filtrate in beaker is evaporated by boiling it in order to receive salt as residue.
Additional information
Relative atomic mass(Ar) : A=7, G=16
The empirical formula : A₂G
<h3>Further explanation</h3>
Given
3.5g of element A
4.0g of element G
Required
the empirical formula for this compound
Solution
The empirical formula is the smallest comparison of atoms of compound forming elements.
The empirical formula also shows the simplest mole ratio of the constituent elements of the compound
mol of element A :
mol of element G :
mol ratio A : G = 0.5 : 0.25 = 2 : 1
Ethanoic acid ionizes in aqueous solutions to form two ions which are 
and 
<h3>Ionization of ethanoic acid</h3>
Ethanoic acid goes by the chemical formula 
.
In aqueous solutions, it ionizes as a monoprotic acid according to the following equation:
A monoprotic acid is an acid that is able to donate only a proton. Hence, ethanoic acid is said to be monoprotic because it ionizes in aqueous solutions to produce a single
More on ethanoic acid can be found here: brainly.com/question/9991017
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