A solution of sodium nitrate will get make litmus paper wet. A solution of NaNO3 is neutral. Therefore, there is no change in color.
Answer:
- FeS
- MnO₂
- Al₂S₃
Explanation:
<u>1) Iron + Sulphur = ?</u>
→ Iron sulfide
<u>2) Manganese + Oxygen = ?</u>
→ Manganese dioxide
<u>3) Aluminium + Sulphur = ?</u>
→ Aluminium sulfide
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Answer:

Explanation:
The first step is the <u>calculation of the moles</u> of
and
, so:


Now, in 1 mol of CO2 we have 1 mol of C and in 1 mol of
we have 1 mol of H. Additionally, if we want to calculate the moles of oxygen we need to <u>calculate the grams of C and O</u> and then do the <u>substraction</u> form the initial amount, so:


Now we can <u>convert the grams</u> of O to moles, so:

The next step is to divide all the mol values by the <u>smallest one</u>:



Therefore the formula is 
Answer:
garreth is the fasstis runner
luigi is the 2 fasts runner
elisa is the 3 fastes runner
Explanation: