Calculate the percent composition of calcium chromate - CaCrO4.

Why only electrons stick to oil drop in millikan's experiment however protons are also present there? why millikan only used oil? and what is the ability in oil drop that it attracts electron towards itself?

No ano 142 d. C. (depois de Cristo), na Grécia, o astrônomo Cláudio Ptolomeu propôs uma teoria que demonstrava que a Terra estava parada e o Sol, a Lua e os outros planetas giravam ao seu redor. Que nome recebeu essa teoria?

What is th compound name SO3

How many molecules of carbon monoxide are in 10 mL at STP

The graph below was created showing the growth of the plant. how would you know the the y-axis is measuring the growth of the plant?

The Greek letter D stands for A. Mass of B. Rate of C. Change in D. Heat stored in

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution

Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one". RbOH + H3PO4 → Rb3PO4 + H2O

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals