The atomic mass and abundance of cr-50 is 49.946 amu and 4.3%. the atomic mass and abundance of cr-52 is 51.941 amu and 83.8%. the atomic mass and abundance of cr-53 is 52.941 amu and 9.5%. the atomic mass and abundance of cr-54 is 53.939 amu and 2.4%. which is the average atomic mass of chromium?
a. 53.94 amu
b. 52.19 amu
c. 52.00 amu
d. 51.94 amu

This line graph compares the growth of plants that were kept in the sun for different amounts of time.a)  on day 7, the plants kept in the sun for 3 hours were how tall? b)  on day 7, the plants kept in the sun for 6 hours were how tall? c)    on day 10, the plants kept in the sun for 9 hours were how tall? d)  on day 11, the plant that was grown with 1 hour of sunlight was how tall? e)  based on the graph, the plant grows best in what amount of sunlight?

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible?

What does x represent in the formula for the compound xcl4?