Answer:
C. Energy is absorbed and released during chemical reactions,
Explanation:
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. Endothermic reactions absorb energy, and exothermic reactions release energy.
Answer:
The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually just extensions or combinations of the first three.
Answer:
Explanation:
Hello,
In this case, we can compute the energy by using the following formula for air:
Whereas the moles of air are computed via the ideal gas equation at room temperature inside the 5.5m x 6.5m x 3.0m-room:
Now, we are able to compute heat, by considering that the temperature raise is given in degree Celsius or Kelvins as well:
Finally, we compute the time required for the heating by considering the heating rate and the required heat, shown below:
Regards.
Answer:
75 kg or 75,000 g
Explanation:
Mass is a measurement that describes the amount of matter within an object. This is a constant measurement that does not change regardless of the object's location.
As such, a person's mass would be the same at both elevations.
**Their weight, however, may change.
** 1 kg = 1,000 g
