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3 years ago

How many mol are in 158g KCl

Chemistry

1 answer:

Rina8888 [55]3 years ago

3 0

The SI base unit for amount of substance is the mole. 1 grams KCl is equal to 0.013413582325191 mole.

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What are the 6 types of chemical reactions?

marusya05 [52]

Answer:

Combination.

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Double displacement.

Combustion.

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4 years ago

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In an ion with an unknown charge, the total mass of all the electrons was determined to be 2.19 ✕ 10−26 g, while the total mass

Ilya [14]

Answer:

$\large \boxed{\text{Fe$^{{2+}}$}}$

Explanation:

1. Number of electrons

$\text{Number of electrons} = 2.19 \times 10^{-26}\text{ g} \times \dfrac{\text{1 electron}}{9.109 \times 10^{-28}\text{ g}} = \text{24 electrons}$

2. Number of protons

$\text{Number of protons} = 4.34 \times 10^{-23}\text{ g} \times \dfrac{\text{1 proton}}{1.673 \times 10^{-24}\text{ g}} = \text{26 protons}$

3. Identify the ion

An atom with 26 protons is iron, Fe.

A neutral atom of iron would have 26 electrons.

The ion has only 24 electrons, so it has lost two. The ion must have a charge of +2.

$\text{The symbol for the ion is $\large \boxed{\textbf{Fe$^{\mathbf{2+}}$}}$}$

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3 years ago

. How many ethyl groups are in the molecule 3, 3-diethylpentane?

Mamont248 [21]

Answer:

2 groups

Explanation:

The molecule 3, 3-diethylpentane has 2 ethyl groups because the prefix di- means that there are 2 homogeneous substituent groups present in the molecule.

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3 years ago

All cartilage ossifies. True or false <br><br><br><br> will mark brainliest!

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3 years ago

If an atom has 16 protons, 14 neutrons, and 17 electrons, what is the atom's electrical charge?

daser333 [38]

Answer:

Negative

Explanation:

Neutrons are neutral

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