What always occurs during a chemical reaction? A. A change in color. B. A change in shape. C. A change in energy. D. A change in state.

Rank the following elements by electron affinity, from most positive to most negative EA value. Rank from most positive to most negative. To rank items as equivalent, overlap them. argon, sodium, iodine, oxygen, phosphorus

In a galvanic cell, a spontaneous redox reaction occurs. however, the reactants are separated such that the transfer of electrons is forced to occur across a wire.

1.00mol of oxygen gas has a pressure of 2.50atm at 325K. Use the ideal gas law to determine the volume of the gas.

In 1969, humans landed on the moon for the first time. Did the astronaut's weight or mass change?

A calcium atom (Ca) will lose or gain electrons

According to the article, HOW has the discovery of the Mimivirus influenced scientists' ideas about viruses? А Since it acts differently than other viruses, scientists think it could lead to a vaccine for cancer B.

Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element? A - 1s2, 2s2, 2p6, 3s1 B - 1s2, 2s2, 2p6, 5s1 yes or no

Match the following terms to their correct examples Conduction Convection Radiation Water warming on a stove The sun warming the earth A spoon resting in a cup of tea gets hot

Why are 3 ammonium groups needed for every 1 nitride ion?

How do you explain the relativity high conductivity of tap water compared to a low or zero conductivity for distilled water