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Serjik [45]
3 years ago
9

Quick Help 10 points

Chemistry
2 answers:
Alenkasestr [34]3 years ago
6 0
D - matter remains constant in any chemical equation, so reactants always equal products.
Savatey [412]3 years ago
6 0

Answer:

The products will have one S and four O atoms.

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The formula for the compound that contains Cu2+ actions and oxygen anions is
azamat

Answer:

. CuO

Explanation:

Since oxygen also has -2 the valency will cancel out the +2 on Cu leaving CuO

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Which of the following is not part of our solar system?
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none of the above

Explanation:

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The three particles that make up atoms are
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Calculate the grams of solute in each of the following solution: 278 mL of 0.038 M Fe2(SO4)3
Goryan [66]

Answer:  4.22 grams of solute is there in 278 ml of 0.038 M Fe_2(SO_4)_3

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n}{V_s}

where,

n = moles of solute

V_s = volume of solution in L

Now put all the given values in the formula of molality, we get

0.038M=\frac{n}{0.278L}

n=0.0105mol  

mass of  Fe_2(SO_4)_3 = moles\times {\text {Molar Mass}}=0.0105\times 399.88g/mol=4.22g

Thus 4.22 grams of solute is there in 278 ml of 0.038 M Fe_2(SO_4)_3

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How do you calculate the density of a gas, based on its temperature and pressure?
stiks02 [169]
We can rearrange the ideal gas equation:
PV = nRT, where n is the number of moles equivalent to:
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m/V = PMr/RT
density = PMr / RT; where Mr and R are constant.
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