Which formula represents a polar molecule?

(1) Br2 (3) CH4

(2) CO2 (4) NH3

Compare the molar concentration of the crystal violet solution to that of the sodium hydroxide solution. approximately how much more concentrated is the sodium hydroxide? justify your answer.

What are the products in a neutralization reaction? two elements an acid and a base an element and a compound a salt and water

What effect does distance have on the force of gravity?

The elements lithium and oxygen react ex - plosively to from lithium oxide (Li2O). How much lithium oxide will form if 2.73 mol of lithium react? The elements lithium and oxygen react ex - plosively to from lithium oxide (Li2O).

Is my answer correct? Which of the following is a possible set of quantum numbers for an electron (n, l, m subscript l, m subscript s) ? (1, 0, 0, + 1) (2, 2, 1, + 1/2) (4, - 3, 0, - 1/2) (3, 2, 1, - 1/2) < - - - my answer

Which sentence describes one characteristic of nonmetals? Nonmetals are often brittle solids. Nonmetals are often malleable. Nonmetals often conduct electricity. Nonmetals are often ductile.

How properties before and after a chemical reaction can be used to determine if a chemical reaction occurred

Use chemistry in a sentence not love chemistry science chemistry

Select all of the following that are particles of atoms. protons neutrons electrons quarks Atoms are composed of particles called protons, electrons and neutrons.

Balance the equation below, and answer the following question: What volume of chlorine gas, measured at STP; is needed to complete the reaction with 6.25g of sodium metal