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Vanyuwa [196]
3 years ago
10

When copper combines with oxygen to form copper oxide, the charge of the copper ion is

Physics
2 answers:
Archy [21]3 years ago
8 0
The copper and oxygen and oxygen atoms are not ions, and the bonds are more covalent than they are ionic.
saveliy_v [14]3 years ago
4 0
Cu(s)+O2(g)-->CuO
The copper ion will technically have a +2 charge
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The box stopped moving because there was a negative acceleration in the x direction caused by friction.
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1. In a biology experiment the number of yeast cells is determined after 24 hours of growth at
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7. 13 a turbine receives steam at 6 mpa, 600°c with an exit pressure of 600 kpa. Assume the turbine is adiabatic and neglect kin
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The work done by the turbine will be 708.2 kJ/kg. The work done by the turbine is the difference of the enthalpy at inlet and exit.

<h3 /><h3>What is temperature?</h3>

Temperature directs the hotness or coldness of a body. In clear terms, it is the method of finding the kinetic energy of particles within an entity. Faster the motion of particles, more the temperature.

If the given turbine is assumed to be reversible;

\rm P_I(Initial pressure)=60 mpa = 60 bar

\rm  T_i(Initial temperature)=600° C

\rm P_e (Exit pressure)=600 kpa=6 bar

The heat balance equation is;

\rm q-W_t=h_e-h_i\\\\ q=0\\\\\ W_t=h_i-h_e

The change in the entropy is;

\rm S_2-S_1=\frac{\delta q}{dt}

The work done by the turbine is;

\rm W_t = h_i-h_e\\\\ W_t =3658.4 -29.5019\\\\  W_t =708.2 \ kJ/kg

Hence,the work done by the turbine will be 708.2 kJ/kg.

To learn more about the temperature, refer to the link;

brainly.com/question/7510619

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The answer is a)rain

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