According to the law of conservation of mass, the mass of the reactants in a reaction must the mass of the products in a reaction.

A.

be different from

B.

be equal to

C.

be greater than

D.

be less than

During the refrigeration cycle, what does the refrigerant do? Absorbs and releases thermal energy by first vaporizing then condensing. Absorbs and releases thermal energy by first condensing then vaporizing.

Two balls undergo a perfectly elastic head-on collision, with one ball initially at rest. if the incoming ball has a speed of 200 m/s.

How much bigger is the sun than the earth?

A boat of mass 115 kg drifts along a river at a speed of 13 m/s to the east. What impulse is required to decrease the speed of the boat to 10 m/s to the east?

What is the difference between a pulmonary artery and the pulmonary vein?

Two football players collide on the field. Before the collision, their total momentum was 450 kgm/s to the north. What is their total momentum after the collision? A. More than 450 kgm/s north B. 450 kgm/s north C. Less than 450 kgm/s north D.

Jane and John Doppler effect

If you combine 430.0 ml of water at 25.00 °c and 140.0 ml of water at 95.00 °c, what is the final temperature of the mixture? use 1.00 g/ml as the density of water. s

While working out, a man performed 200 j of work in 3 seconds. What was his power?

A funnel-shaped low pressure closure