Mass = 126g volume = 15 cm3 what is the density =

Liquids: must be contained to stay in one spot have a variable volume, but a fixed mass are usually more dense than solids and gases cannot be changed into gases

A free-falling golf ball strikes the ground and exerts a force on it. which sentences are true about this situation?

A sample of a compound contains 30.0 g C and 5.05 g H. Its molar mass is 78.12 g/mol. What is the compound's molecular formula? CH C2H2 C6H6 C6H

In a combustion reaction of C3H8 + 5O2 = 3CO2 + 4H2O, how do you know that the first compounds will produce the nuber of what they did?. Also how do you know that this 2Ca + O2 = 2CaO?

Container A holds 782 mL of ideal gas at 2.70 atm. Container B holds 179 mL of ideal gas at 4.50 atm. If the gases are allowed to mix together, what is the partial pressure of each gas in the total volume?

A solid yellow stripe is to be painted in the middle of a certain highway. If 1 gallon of paint covers an area of p square feet of highway, how many gallons of paint will be needed to paint a stripe t inches wide on a stretch of highway m miles long

A 0.45-g sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g C, 0.020 g H, and 0.16 g O. Calculate the mass percent composition of C, H, and O in aspirin.

What volume of 6.00 m naoh would be required to increase the ph to 4.93?

Explain how the effects of nuclear charge and the increasing number of core electrons in an atom oppose each other.

What is the mole ratio of oxygen to pentane?