Any of two or more forms of the same element which differ only in the number of neutrons their atoms contain is called an:

A. irregularity

B. isomer

C. isotope

D. irritability

What happens to the nucleus of an atom when the atom is involved in a chemical reaction?

Rank the following solutes in order of increasing entropy when 0.0100 moles of each dissolve in 1.00 liter of water. (a) NaBr (b) Cr (NO3) 3 (c) CaCl2 (d) C6H12O6

Investigation 1 what is the relationship between the concentration of a solution and the amount of transmitted light through the solution

1. You perform a combustion analysis on a 255 mg sample of a substance that contains only C, H, and O, and you find that 561 mg of CO2 is produced, along with 306 mg of H2O. a.

An atom of nickel has a mass number of 58. how many neutrons are in its nucleus?

Which of the following substances is NOT an alloy? a. Brass b. Bronze c. Stainless steel d. Tin

Relate the statement:"you cant get something for nothing" to the law of the conservation of mass

Which compound is sometimes found in fire extinguishers

The volume coefficient of thermal expansion for gasoline is 950 * 10-6 K-1. By how many cubic centimeters does the volume of 1.00 L of gasoline change when the temperature rises from 30°C to 50°C?

An element's most stable ion forms an ionic compound with bromine, having the formula XBr. If the ion of element X has a mass number of 85 and has 36 electrons, what is the identity of the element?