An aqueous solution is prepared by mixing 0.2750 moles of naoh (40.00 g mol-1) with 189.0 g of water. its density is 1.065 g ml-1. the solute is completely dissociated. what is the percent by weight of naoh in the solution?

How many covalent bonds are in a covalently bonded molecule containing 1 phosphorus atom and 3 chlorine atoms?

Tap water used for drinking is considered in the DIL calculations. A. True B. False

A 2.0-liter volume of hydrogen gas combined with 1.0 liter of oxygen gas to produce 2.0 liters of water vapor. Does oxygen undergo a chemical or physical change?

A substance is found to be made up of atoms from two elements the substance is

Give the atomic symbol for an element that does not exist as a molecule or extended structure. that is, an element that exists only as discrete atoms.

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.

The nerves that Branch out from the spinal cord and connect to the body

The term southern oscillation most nearly refers to

Which kelvin temperature is equivalent to 20°C

When a piece of magnesium metal is added to hydrochloric acid, what gas is produced?