Halocarbons contain carbon, hydrogen, and atoms from which set of elements?

1. lithium, sodium, and potassium

2. nitrogen, oxygen, phosphorus, and sulfur

3. nitrogen, oxygen, and fluorine

4. fluorine, chlorine, bromine, and iodine

What structure do all of these elements have in common? A) number of protons B) numbers of electrons C) number of energy levels D) number of valence electrons

True or False: No matter how plentiful resources are, members of a population will always compete for resources.

Which of the following would likely form a heterogeneous mixture? A. sand and water. B. sugar and water C. baking soda and water D. salt and water

What is the molar mass, in grams, of a mole of an element equal to? O A. the number of electrons in the element O B. the atomic weight of the element OC. the atomic number of the element OD. the number of neutrons in the element

How many values of ml are allowed for an electron in a 5f subshell?

Classify the properties based on whether they describe metals or nonmetals. They are good conductors of heat and electricity. They are brittle and break into sharp pieces. They are flexible and can be made into wires.

A gas occupies a 1.5 L container at 25 degrees Celsius and 2.0 atm. If the gas is transferred to a 3.0 L container at the same temperature, what will be its new pressure? a) 3.0 atm b) 2.0 atm c) 1.0 atm d) 4.0 atm

The maximum amount of n2h4 (hydrazine) that can be prepared from 14 grams of nitrogen and 28 grams of hydrogen by the reaction n2 + 2 h2 = n2h4 is?

The molecules of a substance are moving rapidly in a container. The molecules do not interact with each other. If the container is opened, the molecules will escape from the container.

Why is fluorine a gas?