In the reaction between bromine and sodium, a bromine atom gains an electron. What ion is formed? Is the bromine oxidized. or is it reduced?

A ph of 2 indicates a

What is the oxidation number of sulfur in CaSO3 (3 is a subscript) ?

Sodium hydroxide + nitrate acid

The chemical equation below shows the decomposition of ammonium nitrate (NH4NO3). NH4NO3 → N2O + 2H20 A chemist who is performing this reaction starts with 160.1 g of NH4NO3. The molar mass of NH4NO3 is 80.

Which technology has allowed for exploration beyond our solar system? A) space probe B) space station C) space shuttle D) space observatory

Two pure elements react to form a compound. One element is an alkali metal, X, and the other element is a halogen, Z. Which of the following is the most valid scientific claim that can be made about the compound? a. It has the formula XZ2 b.

Are protons positive and neutrons neutral

Why might it be useful to determine the elements that a planet or moon is made up of?

Which of these is an example of a solution A Sand stirred in water B Sugar stirred in tea C A glass of water with ice in it D Oil and vinegar in a salad dressing jar

What are properties of colloid