How would you define a star

A pump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of air in the pump? 0.2 l 1.0 l 2.0 l 4.0 l

Chlorine can form a maximum of bonds

What is the reaction quotient for this reaction: 4A 2B + 3C? A) Q = [B]03[C] 02/[A] 04 B) Q = [B]0[C] 03/[A] 04 C) Q = [B]02 [C] 03/[A] 04 D) Q = [A] 04/[B]02 [C] 03 E) Q = [A] 04/[B]03 [C] 02

Kobe adds 60 grams of the salt NH4Cl to 100 mL of water at 70°C. He then adds 20 grams more to the water without changing the temperature. What will happen to the added 20 grams?

What volume of a 1.70 M HCl solution should you use to prepare 2.60 L of a 0.200 M HCl solution?

A = 6 is a solution to the inequality a > 6 true or false

Refer to the example about diatomic gases A and B in the text to do problems 19 - 27. For 3 moles AA, how many moles of BB will be required? __ How many moles of product will be made? __ mol answers should be 1, 2, or 3 for each blank

a drop of water weighing 0.48 g condenses on the surface of a 55-g block of aluminum that is initially at 25C.

I add 3.20 moles of Cu to an excess of AgNO3. How many miles of silver are formed?

Which phrase describes two forms of solid carbon, diamond and graphite, at STP? (1) the same crystal structure and the same properties (2) the same crystal structure and different properties (3) different crystal structures and the same properties