The numbers used in a balanced chemical equation to represent the number of particles of

each reactant and product are called

A gas takes up a volume of 10 liters, has a pressure of 7.5 atm, and a temperature of 299 K. If I raise the temperature to 350 K and lower the pressure to 1.5 atm, what is the new volume of the gas?

A gas occupies 11.2L at 0.860kPa. What is the pressure if the volume becomes 15.0L A) 0.64L B) 1.2kPa C) 0.64kPa D) 1.2L

Cassandra looked out the window. She saw a boy moving down through the air. The boy moved all the way down to the ground. He pushed off the ground with his legs. Then he moved up into the air. Cassandra moved to the side to see more.

What is the units of k in the following expression: rate = k[A][B]? A) s^-1 B) M^-1 s^-1 C) M^-2 s^-1 D) M

What is the change in heat energy when 64.82 g of aluminum metal at 100.0oC is cooled to 82.0 °C? The specific heat of aluminum is 0.897 J / g °C.

Which indicator will be the same color in hydrochloric acid as it is in pure water? 1. methyl orange 2. phenolphthalein 3. bromcresol green

Based on your knowledge of energy resources conservation, which of the following statements is true? a) Manufacturers can increase a light bulb's energy efficiency by using technology that decreases the amount of electromagnetic energy the bulb

Ammonia (nh3 (g), hf = - 46.19 kj/mol) reacts with hydrogen chloride (hcl (g), hf = - 92.30 kj/mol) to form ammonium chloride (nh4cl (s), hf = - 314.4 kj/mol) according to this equation:

How does an electromagnet create a magnetic field

Magnetism, reactivity, and fluorescence are three special properties used to identify minerals. true or false