Answer:
A
Explanation:
CHEMICALS WEATHER IN CHEMICAL WEATHERING
Definitely B. Chemicals are used to help clean difficulties items/objects
Answer:
10000000000
Explanation:
1 + 1 = 2 and if you divide 2 by 2 the answer is 1 and 1 x 100 = 100
and if you add 8 zeros to 100 the answer is 10000000000
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<u>Answer:</u> Amount of iron produced is 101.36 grams.
<u>Explanation:</u>
For the reaction of aluminium and iron oxide, the equation follows:

By Stoichiometry of the reaction,
When 1 mole of aluminium oxide is produced, then 2 moles of iron is also produced.
So, when 0.905 moles of aluminium oxide is produced, then
of iron is also produced.
Now, to calculate the amount of iron produced, we use the equation:

Molar mass of iron = 56 g/mol
Moles of iron = 1.81 moles
Putting values in above equation, we get:

Hence, amount of iron produced is 101.36 grams.
Na₂CO₃(s) → 2Na⁺(aq) + CO₃²⁻(aq)
The sodium carbonate formed from a strong base and a weak acid. Hydrolysis is subjected to the anion of a weak acid.
CO₃²⁻ + H₂O ⇄ HCO₃⁻ + OH⁻
HCO₃⁻ + H₂O ⇄ H₂CO₃ + OH⁻
pH>7 alkaline solution
2Na⁺ + CO₃²⁻ + 2H₂O ⇄ 2Na⁺ + 2OH⁻ + H₂CO₃