Bromine has two isotopes whose masses are 78.9183 amu and 80.9163 amu. Their abundances are 50.69% and 49.31%, respectively. Calculate the average atomic mass of bromine.

Calculate the molar solubility of silver chloride in 0.15 M sodium chloride. Ksp of silver chloride = 1.6x10-10.

Calculate the percent composition of the compound that forms when 222.6 g N combines completely with 77.4 g 0. calculate to the nearest tenth of a percent.

What happens when the magnet is removed from the coil in a circuit? a. The current stops c. The voltage decreases b. The current changes direction d. Power output increases

An acid (X) reacts with a base (Y) to produce Mg3 (PO4) 2. What are X and Y? X = H3PO3; Y = Mg (OH) 2 X = H3PO4; Y = Mg (OH) 2 X = H3PO4; Y = Ca (OH) 2 X = H3PO3; Y = Ca (OH) 2

Why are parentheses used to write the formula AI (OH) 3

An atom has seven valance electrons which element could have this type of atom

How is the ocean important to human survival? restate the question

A sample of pure lithium contains 7.99% lithium by mass. What is the % lithium by mass in a sample of pure lithium nitrate that has twice the mass of the first sample?

What ecosystem is being described in the passage?

In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction? a.