Describe how samples of nitrogen and oxygen can be obtained from air?

How is energy made or you could just say created?

What is the pressure of 0.500 moles of carbon dioxide gas in a 2.5 L tank and at a temperature of 301 K? (R=0.0821 L·atm/mol·K) 3.08 atm 1.2 atm 0.23 atm 4.01 atm 4.94 atm

Describe the characteristics of the moon and the Earth for each phase of the moon you investigated.

What is the pressure of 0.5 mol nitrogen (N2) gas in a 5.0 L container at 203 K?

You have a cup of hot water and you dissolve as much salt in it as possible. You then put the cup into the refrigerator and you check it again after 24 hours.

What is it called when energy is created without oxygen?

If 21.3 grams of lithium react with excess water, how many liters of hydrogen gas can be produced at 297 Kelvin and 1.40 atmospheres? Show all of the work used to solve this problem. 2Li (s) + 2H2O (l) - > 2LiOH (aq) + H2 (g)

How did coroners handle their responsibilities in the early 1900s? Why was there a need for significant change in the job?

Which of the following is the best indication that a chemical change has taken place? a. The matter changes color. b. A mixture separates into layers. c. The change is reversible. d. The shape of the substance changes.

This is not lost in a chemical Reaction (4 letter word second letter is A)