Which element in period 4 has the highest electronegativity? A) potassium B) calcium C) copper D) bromine

A student needs to convert a volume of 30 mL to Tbsp (tablespoons). The student finds out that 1 tablespoon is equivalent to 14.79 mL. Choose the correct numbers and units that must be found in the conversion factor to solve this problem.

What is g=9.8m/s2 if m=10. kg

A typical air sample in the lungs contains oxygen at 100 mmhg, nitrogen at 573 mmhg, carbon dioxide at 40 mmhg, and water vapor at 47 mmhg. part a why are these pressures called partial pressures

What is true of an aqueous solution that is 15.0 percent HNO3 by mass? It contains 15.0 grams of HNO3 per 1.0 liter of water. It contains 15.0 grams of HNO3 per 100 grams of solution. It contains 15.0 moles of HNO3 per 100 moles of water.

How do you detemine the charge of an element based on jts valence electrons

A method of lowering the concentration of HCl (aq) is to allow the solution to react with a small quantity of Mg. How many milligrams of Mg must be added to 219 mL of 1.032 M HCl to reduce the solution concentration to exactly 1.000 MHCl

An autoclave would often be used by which of the following scientists?"

When discussing acids and bases any substance that accepts a patron by definition is considered an

When one substance changes into one or more new substances, it has exhibited a 1. chemical change. 2. chemical reaction. 3. physical change. 4. chemical property?

americium-241 has a half-life of 430 years. how much of a 10.0g sample of americium-241 remains after 1720 years?