Select all of the things are done to boats, cars, and planes in order to reduce friction.

The surface is polished.

The body is streamlined.

Special rivets are added.

They are built with sleek, tapering lines.

How many mL of a 4.50 (m/v) % solution would contain 23.0 g of solute?

On a cold, cloudy day, the local weather forecaster predicts that a high pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?

Which of the following correctly describes molecules of two different gases if they are at the same temperature and pressure? A. They must have the same mass B. They must have the same velocity C. They must have the same average kinetic energy D.

A sample of gas is held at constant pressure. Increasing the Kelvin temperature of this gas sample causes the average kinetic energy of its molecules to (1) decrease and the volume of the gas sample to decrease (2) decrease and the volume of the gas

The initial water level in a 10 - mL graduated cylinder reads 4.1 mL. after a ruby gemstone is dropped into the cylinder, the water level reads 7.1 mL what is the volume of the ruby?

Which statements accurately describe mass? Check all that apply.

What was the first particle discovered inside an atom

Calcium and sulfur ionic compound or non ionic?

Which of the following would release the most heat upon cooling from 75°C to 50°C?

Chlorine atoms each have 17 protons. How many neutrons does each Cl-37 atom have? A. 17 B. 20 C. 37 D. 54