Solute is substance which is dissolve in a solvent and Solvent is a substance that dissolves solute in a solution.
It should be A since it needs external source of heat to thrive
while endotherm can produce it's own preferable heat.
If the value of H is positive, it means you have to add that much heat to complete the reaction. If H is negative, it means that much heat is released during the chemical process. Because it is -73 kJ, 73 kJ of heat are released in the reaction.
It's the second one. Their body activity decreases, mostly because they're sleeping and they conserve the food in their bodies for long periods of time.
<span>the marmots' body activity decreases to conserve food stored in their bodies.</span>
Answer:
Super-heavy elements like 114 usually only exist for fractions of a second. ... The physicists called these magic numbers the “island of stability”, because the elements with the numbers cluster together on the periodic table, flanked on all sides by ephemeral elements that dissipate in nanoseconds.
