<span>That the mass is far lesser
and distributed mistakenly, as compared to what the orbits of stars declare it
should be. Stars orbit more rapidly than the mass would predict, particularly
out toward the galactic edge. This means that there is more mass than has been
measured, and that it is spread out in a huge cloud around the galaxy. This is
one of the reasons why scientists believe that dark matter exists.</span>
Answer is: tin and zinc, because they standard potential as less than zero.
Tin and zinc are oxidized to tin and zinc cations (with +2 charge) and hydrogen anions are reduced to hydrogen molecules with neutral charge.
Zn → Zn²⁺ + 2e⁻; 2H⁺ + 2e⁻ → H₂.
<span>Oxidation is increase
of oxidation number and reduction is decrease
of oxidation number.</span>
Answer:
The new pressure will increase.
Explanation:
If the temperature in a tank increases, the pressure inside the tank will also increase. This is one of the postulates of the general gas law.
Pressure exerted by a gas is it's force per unit area.
- When we reduce the equation of the combined gas law taking the number of moles to be 1, we see that;
"at constant volume, the pressure of a given mass or mole of gas varies directly with the absolute temperature" .
The higher the pressure, the higher the temperature will be.
Since the complete parameters are not given, use this expression below:

where P and T are pressure and temperature
1 and 2 represents initial and final states.
it's A. here is the formule for kinetic energy :)