Is weathering a physical or chemical change, and why?

Two samples of the same gas are labeled sample A and sample B. Sample A has a volume of 200 mL and a temperature of 50°C. Sample B has a volume of 500 mL and a temperature of 300 K. In which sample do the molecules have a higher average speed?

A commierical package contain thirty-six 200 mg tablets of ibuprofen. How many kg of ibuprofen were used in the manufacture of 1000 package of the product?

if the pressure in a balloon is 20 atm at 20 K, what will be the pressure when the temperature is raised to 30K?

Does icicles have cells

Which of the following statements is true about gas particles? The space between them is very small. They repel each other with a strong force. They collide to increase their net kinetic energy. The attractive force between them is very weak.

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

The term southern oscillation most nearly refers to

Which kelvin temperature is equivalent to 20°C