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2 years ago

11

Elements are made up of one type of atom. Compounds are particles that have more than one atom joined together. They can be ....

.... or ......

1 answer:

Agata [3.3K]2 years ago

4 0

Answer:

metal or non metal

Explanation:

this is the answer

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Which phase change is an example of an exothermic process?

Ivenika [448]

It could be either sublimation, freezing or condensation. If i had more information i could tell you which

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3 years ago

A solution is prepared by dissolving 8.75 grams of sodium chloride in enough volume of water to produce 112.0 grams of the NaCl

ICE Princess25 [194]

Answer : The percent by mass of the solution is 7.81 %

Explanation : Given,

Mass of NaCl = 8.75 g

Mass of solution = 112.0 g

Now we have to determine the percent by mass of the solution.

$\text{Mass percent}=\frac{\text{Mass of NaCl}}{\text{Mass of solution}}\times 100$

Putting values in above equation, we get:

$\text{Mass percent}=\frac{8.75g}{112.0g}\times 100=7.81\%$

Therefore, the percent by mass of the solution is 7.81 %

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3 years ago

Hydrogen sulfide gas H2S and aqueous iron(II) chloride are formed by the reaction of aqueous hydrochloric acid HCl and solid iro

jasenka [17]

Answer:

The balanced chemical equation for this reaction is:

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Explanation:

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2 years ago

Read 2 more answers

Zn + 2HCI --> ZnCl2 + H2

Elena-2011 [213]

Moles= mass\ relative formula mass(Ar)
moles of zinc= 7.9/30= 0.263
so we have 0.263 moles of zinc, and you need twice the amount of chlorine so therefore 0.526moles of chlorine= 0.526x 17=8.942g of chlorine
i cba to work the rest out but the most reasonable answer is 0.24 mol however if you need to use working outs, use the formula i provided earlier

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2 years ago

Question - Complete and balance the following chemical equations:

Mekhanik [1.2K]

Answer is because
Please give feedback

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2 years ago