Achemist measures the energy change ? h during the following reaction: 2hgo (s) ? 2hg (l) +o2 (g) =? h182.kj use the information to answer the following questions. this reaction

a. endothermic.
b. exothermic.

suppose 72.8g of hgo react. will any heat be released or absorbed?

a. yes, absorbed.
b. yes, released.
c. no.

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

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it

2b2t

explanation:

2b2t