During an investigation, a scientist heated 123.6 g of copper carbonate till it decomposed to form a black residue. The total mass of the black residue formed was 79.6 g. Does the law of conservation of mass hold true in this case?

An effective consists of a gradual reduction in activity levels, such as a slow, easy jog or walk, followed by general stretching. O A. lifting set O B. anaerobic routine O O c. warm-up D. cool-down

How are credit unions different from banks? O A. Credit unions don't charge interest on the loans they make. O B. Credit unions are owned by stockholders rather than partners. O C. Credit unions are nonprofit financial institutions. O D.

How much heat in kcal must be added to 0.5kg of water at room temperature (20°C) to raise its temperature to 50°C?

Why do the upper levels of Neptune's atmosphere appear blue?

A human eye is an example of a simple machine found in the human body. True or false

A skydiver with a mass of 60 kg jumps from an airplane. Five seconds after jumping the force of air resistance is 300 N. What is the acceleration of the sky diver, five seconds after jumping?

How many basic wave forms are there? A.) 1 B.) 2 C.) 3 D.) 4

How much power is reqired to lift a 10-n box 2 meters

Dolphins and other sea creatures can leap to great heights by swimming straight up and exiting the water at a high speed. A 200 kg dolphin leaps straight up to a height of 7.8 m.

An example of renewable energy resource is ... A - uranium B - Wind C - natural gas