Heat, which is energy, either comes into the material during a change of phase<span> or heat comes out of the material during this change. When we heat a solid, the energy supplied is used to increase the kinetic energy of its molecules, and thereby its</span>temperature<span> increases.</span>
Hey there!
The sample of NF₃ contains 8.02 moles fluorine atoms.
There are 3 fluorine atoms in each molecule, so there will be 1/3 of the moles of fluorine.
8.02 / 3 = 2.67
There are 2.67 moles of NF₃ in a sample that contains 8.02 moles fluorine atoms.
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You would be most likely to use a slicing machine if you were using the <u>icebox </u>method to produce cookies.
In the icebox method a type of cookie in which the dough is made, rolled into a stick, and refrigerated until the dough hardens. The dough can be removed from the refrigerator, cut into individual pieces, and then baked. The rest of the dough is returned to the refrigerator until needed.
Icebox method, also known as refrigerator cookies, are sliced and baked cookies. The dough is formed into logs, chilled in the refrigerator (also called an icebox), sliced , and then baked.
Learn more about the Icebox method here,
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Answer:
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Answer:
The forward reaction is an exothermic reaction.
Explanation:
An exothermic reaction is one in which energy is released, usually in the form of heat hence the enthalpy of the reaction is negative. When a reaction exothermic, the energy of the reactants is greater than the energy of the products hence the excess energy is given out as heat. The reactants lie at a higher energy level in the reaction profile compared to the products.
When we look at the reaction given in the question, NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ , we can easily see from the thermochemical reaction that the forward reaction is exothermic, energy is released by the reaction system as evidenced by the negative enthalpy of reaction.
