Which type of measurement is used least often by scientists?

Weight

Mass

Both weight and mass are used equally by scientists

Neither weight or mass is used by scientists

Which element below is least reactive? helium oxygen fluorine nitrogen

What is oxidized and what is reduced in this reaction? N 2 H 4 (l) + 2H 2 O 2 (l) N 2 (g) + 4H 2 O (g) Nis reduced and H is oxidized. Nis reduced and O is oxidized is oxidized and O is reduced oxidized and His reduced.

If the total mass of the products of a reaction is less than the mass of the reactants, what must be true? A nuclear reaction has taken place. A chemical reaction has taken place. Nuclear fusion has occurred. Nuclear fission has occurred.

What is the atomic mass of an element that has 33 protons and 42 neutrons

A balloon inflated with three breaths of air has a volume of 1.7 L. At the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Why are coastal zones productive?

Why aren't there any plate boundaries in Maryland?

Farmers need to make many decisions about how they grow their crops. One of these decisions is whether to use synthetic fertilizer or organic fertilizer, such as manure.

If you walk toward a Van der Graaff generator, the effect of its electric field would get weaker as you got closer to it, true or false.

The volume of a single nickel atom is 8.10*10-24 cm3. what is the volume of a nickel atom in microliters?