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Anni [7]
2 years ago
12

One mole of copper(ii) sulfate, cuso4, contains ________ o atoms.

Chemistry
2 answers:
Naddik [55]2 years ago
8 0

Answer : One mole of copper(II)sulfate contains 24.088\times 10^{23} number of oxygen atoms.

Solution :

As we know that, 1 mole of contains 6.022\times 10^{23} number of atoms.

In CuSO_4, there are 1 number of copper atom, 1 number of sulfur atom and 4 number of oxygen atoms.

As 1 mole of copper(II)sulfate contains 4\times 6.022\times 10^{23}=24.088\times 10^{23} number of oxygen atoms.

Therefore, one mole of copper(II)sulfate contains 24.088\times 10^{23} number of oxygen atoms.

Ierofanga [76]2 years ago
6 0
According  to  avogadro   constant,  the  number  of  units  in  one  mole  of  any  substance   contain  6.022  x10  ^23  atoms

therefore  the  number  of  o  atoms  in   one  mole  of    CuSO4  =  6.022 x 10 ^ 23
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Answer: The rate increases 3 times on raising the temperature from 20degree to 30 degree​

Explanation:

According to Arrhenius equation with change in temperature, the formula is as follows.

ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}]

where k_2 = rate constant at temp T_2

k_1 = rate constant at temp T_1

E_a= activation energy

R= gas constant

T_1= temperature = 20^0C=(20+273)K=293K

T_2= temperature = 30^0C=(30+273)K=303K

ln \frac{k_{2}}{k_{1}} = \frac{-85\times 1000J/mol}{8.314J/Kmol}[\frac{1}{303} - \frac{1}{293}]

ln \frac{k_{2}}{k_{1}}=1.15

\frac{k_{2}}{k_{1}}=3

Thus rate increases 3 times on raising the temperature from 20degree to 30 degree​

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2 years ago
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Bumek [7]
The answer is B
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What is the mass of a sample of iron if that sample lost 2300J of heat energy when it cooled from 80 oC to 30°C? The specific he
irakobra [83]
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