Concrete is formed of sand. Is it incorrect to suggest that some houses are built using concrete blocks?
Answer:
A. endothermic.
A. Yes, absorbed.
Explanation:
Let's consider the following thermochemical equation.
2 HgO(s) ⇒ 2 Hg(l) + O₂(g) ΔH = 182 kJ
The enthalpy of the reaction is positive (ΔH > 0), which means that the reaction is endothermic.
182 kJ are absorbed when 2 moles of HgO react (molar mass 216.59 g/mol). The heat absorbed when 72.8 g of HgO react is:

Answer:
Radiation is being released from the reactor.
Explanation:
( A P E X )
There are many different types of apples i dont EXACTLY know why but however there are some eople that can only have a certain type of apple
Correct Answer: The Sun heats the Earth unevenly; this heating pattern then causes convection currents in the atmosphere.