The atomic number of magnesium (Mg) is 12. This is also the number of which of the following?

It is thought that organelles of eukaryotic organisms, such as mitochondria and chloroplasts (in plant cells) came from

What is the iupac name of ch3ch2ch2ch2ch2ch3

Which best explains why bromine is soluble in mineral oil? A.) Both substances are liquids B.) Both substances have similar densities C.) Both substances are made up of nonpolar molecules D.

A chemist prepares a solution of calcium bromide CaBr2 by measuring out 4.81μmol of calcium bromide into a 50. mL volumetric flask and filling the flask to the mark with water.

Consider the equilibrium reaction in the previous question. A reaction flask initially contains 0.0006 M Ni2 and 0.0002 M SCN-. After the equilibrium is reached, it is found that the concentration of Ni (SCN) is 6.0 X 10-6 M.

A catalyst increases the rate of a chemical reaction by

What energy is changed to cell energy in stage 1 of photosynthesis. true or false

A person produces two sound waves with a flute, one immediately after the other. Both sound waves have the same pitch, but the second one is louder. Which of the following properties is greater for the second sound wave?

A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half-reaction: AgCl (s) + e-→Ag (s) + Cl - (aq). The two cell compartments have [Cl-] = 1.51*10-2 M and [Cl-] = 2.90 M, respectively.

How many liters of chlorine gas can be produced when 0.98 l of hcl react with excess o2 at stp? 4hcl (g) + o2 (g) - > 2cl2 (g) + 2h2o (g) ?