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Vikentia [17]
2 years ago
9

A) Of options (a) - (d) below, highlight the (unbalanced) chemical equation that represents

Chemistry
1 answer:
labwork [276]2 years ago
7 0

Answer:

c...............

Explanation:.............................yuuuuuuuuuuuuuuuuuuuuuwoopuuuuuuuu

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Relationship between the variables of Pressure and Temperature of a gas?
pychu [463]

Answer:

The pressure of a given amount of gas is directly proportional to iys absolute temperature provided that that the volume does not change

7 0
3 years ago
What are steps to solving stoichiomerty problems?
Arada [10]
<span>Balance the equation.
Convert units of a given substance to moles.
Using the mole ratio, calculate the moles of substance yielded by the reaction.
<span>Convert moles of wanted substance to desired units.</span></span>
5 0
3 years ago
The mineral magnesite contains magnesium carbonate, MgCO3 (molar mass= 84 g/mol), and other impurities. When a 1.26-g sample of
Leviafan [203]

The answer is 33.33 %


The explanation:


According to the reaction equation:


MgCO3(s) + 2HCl (aq) --> MgCl2(aq) + H20(l) + CO2(g)


we can see that 1 mole of MCO3 will produce → 1 mole of CO2


-Now we need o get number of mole of CO2:


and when we have 0.22 g of CO2, so number of mole = mass / molar mass


moles = 0.22 g / 44 g/mol = 0.005 mole


∴ moles of Mg = moles of CO2 = 0.005 mole


∴ mass of Mg = moles * molar mass


= 0.005 * 84 /mol = 0.42 g


∴ Percent of MgCO3 by mass of Mg = 0.42 g / 1.26 * 100


= 33.33 %



6 0
3 years ago
Read 2 more answers
HELP PLEASE FAST 100 POINTS
gizmo_the_mogwai [7]

In any chemical reaction, the mass of the products must equal the mass of the reactants. The mass of product B is the same as the combined mass of Reactant A and H₂O.

4 0
2 years ago
state how matter moves through the biosphere. state how energy moves through the biospere. explian each statement using examples
lidiya [134]
<span>Solar energy arrives and is converted into chemical energy by plants which is eaten by animals and converted again and the animal is either eaten by another animal or dies and is broken down by decomposers and the energy is converted back into basic elements for plants to feed off of with the help of solar energy hence the cycle starts again

sorry this is all i know i hope it helps</span>
8 0
3 years ago
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