Chemistry, 19.01.2022 14:00, payshencec21

A scientist needs to calculate the amount of heat released when a sample of melted iron freezes. Which constant should be used? –DHvap DHvap –DHfus DHfus.

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 02:00, issachickadi

Which of the following is not a good technique for managing used oil? a) have specific, labeled catch pans available for technicians who are collecting oil b) spills in your shop and any releases on pavement or outside should be poured down a drain c) do not use oil containers for antifreeze or other non-similar fluids d) be prepared for oil spills with the proper absorbents

Answers: 1

continue

Chemistry, 22.06.2019 14:30, neidaq12345

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

Answers: 2

continue

Chemistry, 22.06.2019 18:00, rodriguezscarlet1713

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

Answers: 2

continue

Chemistry, 22.06.2019 19:20, evansh78

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

Answers: 3

continue

Do you know the correct answer?

A scientist needs to calculate the amount of heat released when a sample of melted iron freezes. Whi...