What is the difference between a pure substance and a mixture?

An airplane leaves New York to fly to Los Angeles. It travels 3,850 km in 5.5 hours. What is the average speed of the airplane?

After leaving the cockroaches in their metabolic chamber for one hour the gases in the chamber was measured. The fraction of oxygen in the chamber was 0.18.

Which phrase or term identifies a physical property of gold?

13. How many protons are present in total in a carbon atom? (a) There are always twelve. (b) There are always six. (c) It depends on the isotope. (d) There are always four. 14.

Definition of metallurgy

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.