Which two particles make up most of the mass of a hydrogen-2 atom?

(1) electron and neutron

(2) electron and proton

(3) proton and neutron

(4) proton and positron

The air above earth's surface is at a different temperature what is responsible for this difference in temperature

In this experiment, 1-2 mL of saturated sodium chloride is used to transfer the crude product after the initial distillation. Why is saturated sodium chloride, rather than pure water, used for this procedure?

8. How many milliliters of solution is needed to make use 48.0 g calcium sulfide to make a 0.250 solution?

Imagine that a rigid container is filled with a liquid, then closed and heated. What change would be observed? A) The liquid would expand. B) The liquid would change into a gas. C) The temperature of the liquid would not change.

What is the formula of lead nitrate

A cracker crushed in water will test positive with iodine but negative with benedict's solution. A cracker crushed in water has another chemical called amylase added to it.

Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with He does not

Which mixture can be separated by using the equipment shown below?

El agua de Mar es una mezcla homogenea o disolucion Y El agua corriente Y El aire Y LA lejia Y Los refrescos con gas Y El suero fisiologico Y Las monedas Y LA leche Y LA gelatina Y Los productos de higiene Y El merengue

The component which dissolves in a solution is called the ...