if chlorine has a mass of 35.5 atomic mass units and a sodium atom has a mass of 23.0 atomic mass units, what is the mass of one NaCI unit?

Predict whether the hottest part of a room will be near the ceiling, in the center, or near the floor, given that there is a hot-air vent near the floor.

Light of wavelength 400nm is incident on two slits separated by 1000mm. The interference pattern from the slits is observed from a satellite orbiting 0.4Mm above the Earth. The distance between interference maxima as detected at the satellite is A.

Underground igneous rock bodies are called

Calculate the number of moles in the 2.00-l volume of air in the lungs of the average person. note that the air is at 37.0ºc (body temperature).

What is electron affinity?

Recently, some information about a distant planet was learned. It has a radius of 6000000 meters, and the density of the atmosphere as a function of the height h (in meters) above the surface of the planet is given by δ (h) =

Which of the following is not a good approximation of the relationship between independent and dependent variables? A. independent: first, dependent: next B. independent: input, dependent: output C. independent: cause, dependent: effect D.

A force is applied to a 13.0 kg wagon to pull it down the sidewalk at a constant speed. The coefficient of kinetic friction is 0.65. Considering the resulting frictional force, what is the magnitude of the applied force?

Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planers in orbit around the Sun.

What wave-like property of light causes it to bend when encountering an opening? A. Reflection B. all the above c. Refraction d. none of the above e. diffraction