firegaming495

1.) A sample of sulfur dioxide at a pressure of 1.00 atm and a temperature of 202 K is heated at constant pressure to a temperature of 245 K. Which of the following are true?

Choose all that apply

The gas initially present will solidify.

The final state of the substance is a liquid.

The sample is initially a liquid.

The sample is initially a solid.

No phase change will occur.

2.) The substance sulfur dioxide has the following properties:

A sample of sulfur dioxide at a pressure of 1.00 atm and a temperature of 245.1 K is cooled at constant pressure to a temperature of 202.2 K. Which of the following are true?

Choose all that apply

The solid initially present will vaporize.

The sample is initially a liquid.

The final state of the substance is a liquid.

The final state of the substance is a solid.

No phase change will occur.

3.) The substance neon has the following properties:

4.) A sample of neon is initially at a pressure of 27.6 atm and a temperature of 20.7 K. The pressure on the sample is reduced to 0.425 atm at a constant temperature of 20.7 K. Which of the following are true?

Choose all that apply

The sample is initially a solid.

The liquid initially present will solidify.

No phase change will occur.

The final state of the substance is a solid.

The final state of the substance is a gas.

Pick one of the four substances and graph the two-phase changes as it's being heated and a separate graph showing the phase changes as it is losing heat.

Choose any units for time on the x-axis, use °C as your units for temperature on the y-axis.

Label the phase changes as well as when the substance is a solid, liquid and gas for both.

Which countries are part of the G7?

Answer the following question:

1. In your own words, explain why, if two compounds have the same LD50 value, they aren’t necessarily as toxic. Make sure to include the term Threshold in your answer. 

what is quenching in chemistry pertaining to a chemiluminescencereaction?

Who can tell meaning of chemistry?

Read “Chapter 3” in the book “Fundamentals of Business” by Stephen J. Skripak. Answer to following questions below 200- 500 words.

Pick three to five topics, terms, concepts, or subjects that interested you in this chapter.

Write in detail the chosen topics, terms, concepts or subject areas, to include what you learned and why it interests you.

Each topic, term, concept or subject area highlighted should be no less than one paragraph containing four to five sentences.