A 10.0-gram sample of H2O (l) at 23.0°C absorbs 209 joules of heat. What is the final temperature of the H2O (l) sample? (1) 5.0°C (3) 28.0°C (2) 18.0°C (4) 50.0°C

How many grams of water will be required to completely react with 1.00 mol of CaO according to the following reaction CaO+H2O__Ca (OH) 2

The amount of time it takes for half of a radioactive isotope to decay is known as the

The volume of solution in a test tube is measured to be 0.0067 liter. Which digits in the measurement are significant figures?

75 mL of a gas is at 690 mmHg at - 45°C. What will be the new volume at STP? -

Which of the following is a correct procedure for the operation of a microscope? A. Use the fine focus knob with the low power lens and use the coarse focus knob with the high power lens. B.

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.