Use the periodic table or graphic in lesson. what is the atomic number of carbon?

Why is the presence of hard water considered a negative thing

A student claims that during a crescent moon phase, the sun's light is only shining on the moon a tiny bit and during a full moon, the sun's light is shining on the entire moon. Do you agree or disagree with this claim? Explain.

Which of the following explains the conservation of mass during cellular respiration? The total number of atoms when carbon dioxide and oxygen react stays the same when glucose and water are produced.

During light reactions: Carbon dioxide is released by stomata. Hydrogen and oxygen are combined into water. Light energy is converted into chemical energy. All of the above.

When combining with nonmetallic atoms, metallic atoms generally will ... 1. lose electrons and form negative ions 2. lose electrons and form positive ions 3. gain electrons and form negative ions 4. gain electrons and form positive ions

Is calcium pantothenate ionic or covalent?

One parsec equals 3.26 light years, where a light year is the distance light travels in one year. if the speed of light is 186000 mi/s, how many parsecs does it take for light to reach Mars from Earth, which is 60 million kilometers away? (1 km = 0.

In the following diagram the counter clockwise torque is?

A water wave travels 36 meters in 15 seconds. whatvis the speed of water?

Which type of wave cannot move without a medium in which to travel? Heat waves Light waves Sound waves Transverse waves