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disa [49]
3 years ago
8

When zinc pieces are are put in copper sulphate solution what happens ?

Chemistry
1 answer:
bearhunter [10]3 years ago
4 0
Explanation -
Zinc is more reactive than copper. So, by adding zinc to CuSO4 solution, zinc displaces copper from copper sulphate & forms zinc sulphate solution. This is indicated by colour change from blue to colourless. CuSO4 solution has a blue colour while ZnSO4 solution is colourless.

Chemical equation -
Zn(s) + CuSO4(aq) -> Cu(s) + ZnSO4 (aq).

Type of reaction -

It's a displacement reaction.

It's a redox reaction. Oxidation number of Cu decreases from 2 to 0 so it's reduced. Oxidation number of Zn increases from 0 to 2 so it's oxidised.

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119.84 c is the answer
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Propane, the gas used in barbeque grills, is made of carbon and hydrogen. will the atoms that make up propane form covalent bond
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Anyone knows gunpowder formula?​
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What mass of CO2 would be needed to weigh out to make 10.5 moles of carbon dioxide? (round answer to nearest tenth)
melamori03 [73]

The mass of carbon dioxide that would be needed to weigh is 462 grams.

Given:

10.5 moles of carbon dioxide.

The periodic table

To find:

The mass of carbon dioxide would be needed to weigh out to make 10.5 moles of carbon dioxide.

Solution:

Mass of carbon dioxide needed = m

Moles of carbon dioxide needed = 10.5 mol

The molar mass of carbon dioxide = M

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M = 1\times 12.011 g/mol+2\times 15.999 g/mol\\\\=44.009 g/mol

The moles of carbon dioxide will be given as:

10.5 mol=\frac{m}{44.009 g/mol}\\\\m=10.5 mol\times 44.009 g/mol=462.0945 g\approx 462 g

The mass of carbon dioxide that would be needed to weigh is 462 grams.

Learn more about the moles of substance here:

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7 0
3 years ago
If 211 mL of water is added to 5.00 mL of 3.24 M NaCl solution,
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Answer:

0.075M

Explanation:

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Concentration=\frac{Mass \ Solute}{Volume \ of \ Solution}

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M_1V_1=M_2V_2\\\\V_2=V_1+211=211+5=216mL\\\\\therefore M_2=\frac{M_1V_1}{V_2}\\\\=\frac{3.24\times 5}{216}\\\\\\=0.075\ M

Hence, the concentration of the dilute solution is 0.075M

6 0
4 years ago
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