3 years ago

What is meant by the term polar molecule

Chemistry

2 answers:

alukav5142 [94]3 years ago

4 0

An asymetric molecule with non uniform positive an negative charges

s344n2d4d5 [400]3 years ago

3 0

Separation of electric charge from one molecule to another

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What happens when water is added to quicklime? Write two observations.

Neporo4naja [7]

Answer:

1.Most metal oxides are insoluble in water but some of these (e.g. Na2O.

Explanation:

2.: (i) A hissing sound is observed.

1.ii) The mixture starts boiling and lime water is obtained.

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3 years ago

The following diagram shows a single cell. Is the cell eukaryotic or prokaryotic? Explain your reasoning

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Explanation:

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3 years ago

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maks197457 [2]

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3 years ago

The maximum number of moles of compound E that may be formed in the following reaction is: ЗА + 5B + c 个 2E Initial moles: n(A)=

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3 years ago

For the reaction 2 Al + 3 H2SO4⟶ 3 H2 + H2(SO4)3 how many grams of sulfuric acid, H2SO4, are needed to react completely with 53.

shtirl [24]

Answer:

292.4 g

Explanation:

2Al + 3H₂SO₄ → 3H₂ + Al₂(SO₄)₃

First we convert 53.7 g of Al into moles, using its molar mass:

53.7 g ÷ 27 g/mol = 1.99 mol Al

Then we convert Al moles into H₂SO₄ moles, using the stoichiometric coefficients:

1.99 mol Al * $\frac{3molH_2SO_4}{2molAl}$ = 2.98 mol H₂SO₄

Finally we convert 2.98 moles of sulfuric acid into grams, using its molar mass:

2.98 mol H₂SO₄ * 98 g/mol = 292.4 g

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3 years ago