In 1 kilogram of pure water, the mass of hy drogen atoms is approximately 112 grams, or 0.112 kilograms. what is the energy equivalent of this mass in joules?

What does the subscript 2 show in this chemical equation? h2o → 2h o a. there are 2 oxygen atoms. b. there are 2 hydrogen atoms. c. there is half of a hydrogen atom. d. there are 2 water molecules.

what will happen to the nucleus if the attractive forces in the nucleus are weaker than repulsive forces?

In order to scale a recipe, one must

A uranium atom has 92 protons in its nucleus. how many electrons does it have?

Which of the following statements about functional groups is false? Group of answer choices The only functional group possible in a hydrocarbon is the double bond. An alkane does not have a functional group.

An example of a fossil fuel is a. wood. b. petroleum. c. the sun. d. water.

St2 Second Laws A 1.500 kg car is accelerated at 2.4 m/s2. What force was needed to produce this acceleration? A. 3,600 N B. 606 N C. 625 N D. 3.668 N Reset Submit

During which process can 10.0 milliliters of a 0.05 M HCl (aq) solution be used to determine the unknown concentration of a given volume of NaOH (aq) solution? (1) evaporation (3) filtration (2) distillation (4) titration

Which one of the following concept of air is least necessary

The kinetics of the decomposition of dinitrogen pentaoxide is studied at 50°C and at 75°C. Which of the following statements concerning the studies is correct?