Unstable isotopes occur when the strong force is unable to overcome the

A compounds empirical formula is CH2. If the formula mass is 28 g/mol, what is the molecular formula

Which of the following could cause a physical change in a solid piece of sodium metal?

What kind (s) of intermolecular forces exist in the compounds given below? (a) CH3CH2CH2CH2CH3 (l) dispersion forces dipole-dipole forces hydrogen bonding (c) H2CO (l) dispersion forces dipole-dipole forces hydrogen bonding (b) CH3CH2OH (l)

What is gravity the primary source for?

What is the mass percent of sodium in NaCl? a) 39.34% b) 60.66% c) 60.66% d) 78.68%

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?