What is x + 4 = - x - 4?

What is the different types of technology used for cloning animals?

Which of these forces acts on a football after it has been thrown by a quarterback (and before it touches the ground or another player) ? A) Frictional and applied forces B) Applied and gravitational forces C) Gravitational and frictional forces

A pot filled with snow is left on a hot stove for a while. What would happen?

The process by which all the different kinds of living things have changed over long periods of time is called

Why is energy released when bonds are formed?

Which principle explains why it is necessary to have safety belts in cars?

Hydrochloric acid is purchased in 12 molar concentrations. If I needed 200 ml of 2.0 molar HCl, how many milliliters of the concentrated solution would I need

Which of the following represents a chemical change? Bending a wire Freezing of water Fireworks exploding Melting of a wax candle

5.00 L of a gas is collected at 100K and then allowed to expand to 20.0 L. What must the new temperature be in order to maintain the same pressure? A. 400 °C B. 127 °C C. 223 °C D. 627°C

Before the initial explosion was the matter hot or cold