Chemistry, 17.12.2019 00:31 christinasmith9633
Changes in state are called phase changes. a phase change is a change from one physical state (gas, liquid, or solid) to another. the amount of energy necessary to melt 1 mole of any solid is called its enthalpy of fusion. the amount of energy necessary to vaporize 1 g of any substance is called its enthalpy of vaporization. the enthalpy of fusion of solid sodium is 2.60 kj/mol. calculate the energy required to melt 43.6 g of solid sodium.
Answers: 3
Chemistry, 22.06.2019 04:00
Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?
Answers: 3
Chemistry, 22.06.2019 21:30
Under which circumstances are kp and kc equal for the reaction aa(g)+bb(g)⇌cc(g)+dd(g)?
Answers: 2
Chemistry, 22.06.2019 23:00
What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?
Answers: 1
Changes in state are called phase changes. a phase change is a change from one physical state (gas,...
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