Name a monomer used to make poly (Ethene)

Your teacher gives you a black powder. When you dissolve the powder in water, you see red particles that float to the top, black particles that sink to the bottom, and a green liquid. What was the black powder?

Two iron balls of different mass are heated to 100°C and dropped in water. If the same amount of heat is lost by the two balls to water, what can be said about the final temperatures of the two balls?

The ratio of the number of miles of solute dissolved in one kilogram of solvent

The efficiency of a machine is always less than 100% because

What is a joule? A. A form of nuclear energy B. A unit of temperature C. A unit of energy D. The movement of heat

Four moles of carbon monoxide (CO) has 48 grams of carbon (C) and 64 grams of oxygen (O). What is the percent composition of carbon in carbon monoxide? 6.25% 8.3% 43% 75.0%

What is the difference between potassium 39, 41, and 40

What is physical chemistry?

Which of the following happens during a solar eclipse? The moon appears red. The moon casts a shadow on Earth. Earth, the moon, and the sun form a triangle. Earth comes between the sun and the moon.

The four elements comprising over 90 of living matter are