Answer:
See explanation
Explanation:
The word equation is just a statement of the reaction in words as follows;
Magnesium oxide ----> Magnesium metal + oxygen gas
An unbalanced stoichiometric equation doesn't have equal number of atoms of each element on both sides.
Hence the unbalanced stoichiometric equation is as follows;
MgO(s) -----> Mg(s) + O2(g)
The relation between density, mass and volume is

1) to calculate = volume
given:
Density = 0.0915 g/ mL
mass = 17.7 grams
formula used:

Thus
Volume 
Answer: 193.44 mL
2) the mass of sample will be

Answer: 7 g
Answer:
m = 21.915 g of NaC to create the right balance between
Answer:

Explanation:
Hello,
In this case, we can apply the Boyle's law in order to understand the pressure-volume relationship as an inversely proportional relationship relating the initial and the final volume:

Next, we compute the final pressure P2:

Thus we validate, the higher the volume the lower the pressure.
Best regards.
Butane is a gaseous molecule which is part of the organic compounds called hydrocarbon,
<h3>What kind of molecule is butane?</h3>
Butane is a gaseous molecule which is generally called a hydrocarbon.
Hydrocarbons are composed of only carbon and hydrogen. They are of organic origin.
Butane is a low molecular weight hydrocarbon which is used as a fuel.
In conclusion, butane is a gaseous hydrocarbon,
Learn more about hydrocarbons at: brainly.com/question/1489747
#SPJ1