What are the steps used to write ionic formulas for ionic compounds

1 answer:

6 0

Write the symbols for the cation and the anion: Mg and Cl. Determine the charge on the cation and anion. If the cation has a Roman numeral after it, that is the charge on that cation. Cations receive Roman numerals when they can take more than one ionicform.

periodical table and write caculatoin numbers

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Balance the redox reaction equation (occurring in acidic solution) and choose the correct coefficients for each reactant and pro

algol13

Balanced chemical reaction:
PbO₂(s) + Sn(s)+ 4H⁺(aq) → Pb²⁺(aq) + Sn²⁺(aq) + 2H₂O(l).
Oxidation half-reaction: Sn → Sn²⁺ + 2e⁻.
Reduction half-reaction: PbO₂ + 4H⁺ + 2e⁻ → Pb²⁺ + 2H₂O.
Net reaction: Sn + PbO₂ + 4H⁺ + 2e⁻ → Sn²⁺ + 2e⁻ + Pb²⁺ + 2H₂O.
Oxidation is increase of oxidation number, reduction is decrease of oxidation number.

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4 years ago

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes s

jolli1 [7]

Answer:

the candle is still solid..................in this case, yes!

Explanation:

it is still solid because the molecules are packed together tighter than the molecules in a liquid or gas.

6 0

3 years ago

Read 2 more answers

3 Mg + 1 Fe2O3 --> 2 Fe + 3 MgO

Gala2k [10]

Answer:

Fe₂O₃ is the limiting reactant.

7.57 g of MgO are formed.

Explanation:

3 Mg + 1 Fe₂O₃ → 2 Fe + 3 MgO

First we convert the given masses of both reactants into moles, using their respective molar masses:

15.6 g Mg ÷ 24.305 g/mol = 0.642 mol Mg

10.0 g Fe₂O₃ ÷ 159.69 g/mol = 0.0626 mol Fe₂O₃

0.0626 moles of Fe₂O₃ would react completely with (3 * 0.0626 ) 0.188 moles of Mg. As there are more Mg moles than required, Mg is the reactant in excess; thus, Fe₂O₃ is the limiting reactant.

We now calculate how many MgO moles are produced, using the number of moles of the limiting reactant:

0.0626 mol Fe₂O₃ * $\frac{3molMgO}{1molFe_2O_3}$ = 0.188 mol MgO

Finally we convert moles of MgO into grams:

0.188 mol MgO * 40.3 g/mol = 7.57 g

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3 years ago

A scientist who works with the history of the earth and planets that is recorded in rocks

ivanzaharov [21]

Pretty sure it would be a geologist.

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4 years ago

Why can equilibrium not be reached in reversible enzymatic rxn?

GuDViN [60]

Enzymatic reactions are usually reversible reactions, that is, the reaction can go forward and backward. In this kind of situation, the reactants and the products are not fully consumed and both the forward and the backward reactions are occurring simultaneously, thus the reaction can never reach equlibrum.

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3 years ago