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2 years ago

100 points!! Brainliest if correct!!

Chemistry

2 answers:

snow_tiger [21]2 years ago

6 0

Answer A: CO2

Reason: carbon dioxides formula is CO and the number next to it is the molecules

Leni [432]2 years ago

6 0

A molecule of carbon dioxide is made up of 1 atom of carbon and 2 atoms of oxygen. So it is represented by CO2.

For 2 carbon dioxide molecules, they are represented by 2CO2. So the answer is C.

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Iton is a transition element a) Give two physical properties of iron tgat are similar to sodium. b) Give three physical properti

Pepsi [2]

Answer:

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Explanation:

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3 years ago

The molecule CH,Cl has four atoms arranged around one central atom. What is the shape of the molecule? (1

balu736 [363]

Answer:

tetrahedral

Explanation:

it sounds like a tetrahedral shape, which is when there are four bonds and no lone pairs around the central atom in the molecule.

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2 years ago

The tarnish that forms on objects made of silver is solid silver sulphide. This can be removed by reacting it with aluminium met

steposvetlana [31]

Answer:

5.83 mol.

Explanation:

From the balanced reaction:

2Al + 3Ag₂S → 6Ag + Al₂S₃,

It is clear that 2 mol of Al react with 3 mol of Ag₂S to produce 1 mol of Ag and 1 mol of Al₂S₃.

Al reacts with Ag₂S with (2: 3) molar ratio.

So, 2.27 mol of Al reacts completely with 3.4 mol of Ag₂S with (2: 3) molar ratio.

The limiting reactant is Ag₂S.

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The reamining moles of excess reactant "Al" = 8.1 mol - 2.27 mol = 5.83 mol.

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3 years ago

Gold is a natural resource, because it occurs naturally in the environment and humans use it. Gold cannot be made from other sub

Viktor [21]

Answer:

Answer below:

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A nonrenewable resource

5 0

2 years ago

Read 2 more answers

The mass spectrum of an unknown compound has a molecular ion peak with a relative intensity of 57.10% and an M+1 peak of 6.83%.

max2010maxim [7]

There are 11 Carbon atoms in the compound.

Solution:

Carbon atom count is the ratio of the M peak to the M+1 peak.

$\text{ Number of Carbon atoms }=\frac{\text { Relative intensity of } M+1 \text { peak }}{0.011 \times \text { Relative tntensity of } M \text { peak }}$

Here M peak is 57.10% and M+1 peak is 6.83%. On applying the values in the formula we get,

$\frac{0.0683}{0.011\times0.571g} = 10.87\approx11$

Therefore, the number of Carbon atoms in the compound are 11.

Refer the image attached below for a better understanding of M peak and M+1 peak.

The heaviest ion that has the greatest m/z value is said to be the molecular ion peak in mass spectrum.

6 0

3 years ago