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3 years ago

Which statement about ionic bonds is true?

Chemistry

2 answers:

DiKsa [7]3 years ago

5 0

Answer:

C. In ionic bonds one atom accepts electrons from another atom to achieve a stable outer shell.

Explanation: Some Atoms have positive Charges. Like Na (Sodium) has a charge of +1 because its missing an electron, and there are Atoms with a negative charge like Chlorine, it has an extra electron so a charge of -1. The chlorine atom transfers the extra Electron to the sodium atom. they both gain a neutral Charge.

DiKsa [7]3 years ago

4 0

Answer:

I could be C.

Explanation:

I hope it is

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Question 2 of 50

wolverine [178]

The thermal decomposition of calcium carbonate will produce 14 g of calcium oxide. The stoichiometric ratio of calcium carbonate to calcium oxide is 1:1, therefore the number of moles of calcium carbonate decomposed is equal to the number of moles of calcium oxide formed.

Further Explanation:

To solve this problem, follow the steps below:

Write the balanced chemical equation for the given reaction.
Convert the mass of calcium carbonate into moles.
Determine the number of moles of calcium oxide formed by using the stoichiometric ratio for calcium oxide and calcium carbonate based on the coefficient of the chemical equation.
Convert the number of moles of calcium oxide into mass.

Solving the given problem using the steps above:

STEP 1: The balanced chemical equation for the given reaction is:

$CaCO_{3} \rightarrow \ CaO \ + \ CO_{2}$

STEP 2: Convert the mass of calcium carbonate into moles using the molar mass of calcium carbonate.

$mol \ CaCO_{3} \ = 25 \ g \ CaCO_{3} \ (\frac{1 \ mol \ CaCO_{3}}{100.0869 \ g \ CaCO_{3}})\\ \\\boxed {mol \ CaCO_{3} \ = 0.2498 \ mol}$

STEP 3: Use the stoichiometric ratio to determine the number of moles of CaO formed.

For every mole of calcium carbonate decomposed, one more of a calcium oxide is formed. Therefore,

$mol \ CaO \ = 0.2498 \ mol$

STEP 4: Convert the moles of CaO into mass of CaO using its molar mass.

$mass \ CaO \ = 0.2498 \ mol \ CaO \ (\frac{56.0774 \ g \ CaO}{1 \ mol \ CaO})\\ \\mass \ CaO \ = 14.008 \ g$

Since there are only 2 significant figures in the given, the final answer must have the same number of significant figures.

Therefore,

$\boxed {mass \ CaO \ = 14 \ g}$

Learn More

Learn more about stoichiometry brainly.com/question/12979299
Learn more about mole conversion brainly.com/question/12972204
Learn more about limiting reactants brainly.com/question/12979491

Keywords: thermal decomposition, stoichiometry

5 0

3 years ago

Silver and gold are both considered coinage metals. How does a mile of silver compare with a mole of iron ?

fomenos

Answer:

both have the same number of atoms

Explanation:

saw it on a quizlet

7 0

4 years ago

What is a common property of metals?

Y_Kistochka [10]

Answer:

B) conducts electricity

Explanation:

Metals are conductors, literally meaning they conduct electricity.

One metal is liquid at room temp (there might be one more but I only know of mercury).

The reactivity depends on the placement in the periodic table.

If it conducts electricity, it can't be an insulator.

4 0

3 years ago

How can you increase the amount of energy in a wave?

patriot [66]

Explanation:

One is amplitude, which is the distance from the rest position of a wave to the top or bottom. Large amplitude waves contain more energy. The other is frequency, which is the number of waves that pass by each second. If more waves pass by, more energy is transferred each second.

5 0

3 years ago

Read 2 more answers

This is the thinner layet of earths lithosphere that forms the surface under the ocean basins

sineoko [7]

It is the Oceanic crust.

3 0

3 years ago