A liquid has a density of 1.27 g/mL. What is the mass of 20.0 mL of this liquid?

a. 0.0635 g

b. 15.7 g

c. 21.3 g

d. 25.4 g

An aerosol spray can with a volume of 441 ml contains 3.09 g of propane gas as a propellant. what volume would this sample of propane occupy at stp?

If a 50.0 mL sample of gas exerts a pressure of 0.59 atm at 35.0 Celsius. What volume will the gas occupy at STP?

In order to determine whether or not a precipitate formed at the end of a double-replacement reaction, you need to know if the compounds are

Identify the statement that is FALSE. Identify the statement that is FALSE. Entropy increases with dissolution. Entropy generally increases with increasing molecular complexity. For noble gasses, entropy increases with size.

The reaction between C2H6 and Cl2 is by addition

Was the relationship among temperature, heat, and thermal energy?

What will most likely happen when a warmer air mass exists above a polar ice sheet? The temperature of the ice sheet will be lowered. Heat will be transferred from the air mass to the ice. The air mass will exert high pressure and rise upwards.

A 2.00 L sample of gas at 35 C is to be heated at constant pressure until it reaches a volume of 5.25 L. To what Kelvin temperature must this sample be heated?

Of the following reactions, which one produces oxygen gas? Fermentation Anaerobic respiration Aerobic respiration Photosynthesis

Describe the electrodes in this iron-copper galvanic cell.