The density of an object is 4.5 g/mL. The volume of an object is 2.5 mL. What is the mass?
Enter the number and the unit in the space provided. Round your answer to one
Decimal if necessary

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.