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3 years ago

This is the chemical formula for talc (the main ingredient in talcum powder):

Chemistry

1 answer:

MAXImum [283]3 years ago

7 0

Answer : 6.41 moles of silicon are in the sample.

Solution : Given,

Moles of magnesium = 9.62 moles

The given chemical formula for talc is, $Mg_3Si_2O_{52}OH_2$

From the given chemical formula we conclude that

The stoichiometry of magnesium and silicon is 3 : 2

3 moles of magnesium is equivalent to 2 moles of silicon

9.62 moles of magnesium will be equivalent to $\frac{2}{3}\times 9.62=6.41$ moles of silicon

Therefore, the number of silicon present in sample are 6.41 moles.

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What is the Molar mass of Na3P

Sedaia [141]

Answer:

99.943071 g/mol

Explanation:

22.98977*3+30.973761

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2 years ago

Whose main job is to break down sugar to release energy that a plant cell can use?

Tasya [4]

Answer:

The Mitochondria

Explanation:

Mitochondria are membrane-bound cell organelles that generate most of the energy required to power the cell's organic chemistry reactions. Energy created by the mitochondria is kept in a tiny molecule known as adenosine triphosphate (ATP).

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2 years ago

Please help!! Having trouble with this

Gnoma [55]

For #4 first find the molar mass(M) of copper then use that and the mass (m) n=m/M to find moles(n) using moles and the volumes find the concentration using c=n/V

7 0

3 years ago

Noble gas compounds like KrF, XeCl, and XeBr are used in excimer lasers. Draw an approximate molecular orbital diagram appropria

Aneli [31]

Answer:

Here's what I get.

Explanation:

The MO diagrams of KrBr, XeCl, and XeBr are shown below.

They are similar, except for the numbering of the valence shell orbitals.

Also, I have drawn the s and p orbitals at the same energy levels for both atoms in the compounds. That is obviously not the case.

However, the MO diagrams are approximately correct.

The ground state electron configuration of KrF is

$(1\sigma_{g})^{2}\, (1\sigma_{u}^{*})^{2} \, (2\sigma_{g})^{2} \, (2\sigma_{u}^{*})^{2} \, (3\sigma_{g})^{2} \, (1\pi_{u})^{4} \, (1\pi_{g}^{*})^{4} \, (3\sigma_{g}^{*})^{1}$

KrF⁺ will have one less electron than KrF.

You remove the antibonding electron from the highest energy orbital, so the bond order increases.

The KrF bond will be stronger.

6 0

3 years ago

How are energy storage molecules affected if there is LESS carbon dioxide?

kipiarov [429]

Answer:

When there is less carbon (in the form of carbon dioxide) in abiotic matter, less carbon is available for producers making energy storage molecules. When there is more sunlight, producers can make more energy storage molecules from the carbon in carbon dioxide.

Hope this helps.

7 0

3 years ago