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If the temperature changes in a chemical reaction, What has occurred?

A. There was no energy transfer.

B. Energy was transferred

C. Energy was destroyed

D. Energy was created

How many atoms are present in 20.9 g of titanium

What is the voltage of a circuit in a toaster with 12.0 amps of current and 8.0 ohms of resistance? OA 96 volts B. 1.5 volts . C. 0.67 volts D. 20 volts

Do you think it is important that the United States have a strong central government?

A gas occupies 12.3 l at a pressure of 40 mm hg. what is the volume when the pressure is increased to 60 mm hg

During exercise, the oxygen diffusion capacity increases dramatically because transit time through the pulmonary capillaries is much shorter reduced venous return leads to decreased pulmonary capillary flow rate lower venous O2 content increases the

Explain Charles law

2 H2 + O2 → 2 H2O What is the product of this chemical reaction

Which of the following is a chemical property? A.) Ability to burn B.) Mass C.) Density D.) All of the above

What is the density of rock if it has a mass of 25 g?

In a popular classroom demonstration, solid sodium is added to liquid water and reacts to produce hydrogen gas and aqueous sodium hydroxide. part a write a balanced chemical equation for this reaction.