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3 years ago

Copper metal can exist as ______________ ions.

Chemistry

1 answer:

denis-greek [22]3 years ago

3 0

Answer:

Copper metal can exist as Cu+ and Cu2+ 

ions.

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A __________ compound is a cyclic compound in which one or more of the ring atoms is an atom other than carbon. g

fiasKO [112]

Answer:

heterocyclic compound

Explanation: by the fact that some or all of the atoms in their molecules are joined in rings containing at least one atom of an element other than carbon

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3 years ago

Which qualities describe the mass and charge of an electron?

Sliva [168]

mass equal to that of a proton; negative charge

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4 years ago

Calculate the value of the diffusion coefficient D (in m2/s) at 547°C for the diffusion of some species in a metal; assume that

svetlana [45]

Answer : The value of diffusion coefficient is, $2.97\times 10^{-16}m^2/s$

Explanation :

Formula used :

$D=D_o\times \exp \left(-\frac{Q_d}{RT}\right )$

where,

D = diffusion coefficient = ?

$D_o$ = $5.6\times 10^{-5}m^2/s$

$Q_d$ = $177kJ/mol$

R = gas constant = 8.314 J/mol.K

T = temperature = $547^oC=273+547=820K$

Now put all the given values in the above formula, we get:

$D=5.6\times 10^{-5}m^2/s\times \exp \left(-\frac{177kJ/mol}{(8.314J/mol.K)\times (820K)}\right )$

$D=2.97\times 10^{-16}m^2/s$

Thus, the value of diffusion coefficient is, $2.97\times 10^{-16}m^2/s$

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3 years ago

Complete each nuclear reaction equation.

frez [133]

Answer:

Explanation:

For Edg hope it helps

6 0

3 years ago

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Which items below are properties of matter? [select all that apply]

8_murik_8 [283]

Answer:

Solubility, length, hardness, color, mass, density, weight, volume, boiling, and point.

Explanation: Hope this helps

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3 years ago