A photon has a frequency of 2.9 * 10-16 Hz. Planck's constant is 6.63 * 10-34 J•s. The energy of the photon, to the nearest tenths place, is___ * 10-49 J.

8.7 moles of ammonia (NH3) is formed in the following reaction. How many grams of hydrogen reacted?

Why should the numbers and types of atoms be the same on both sides of your chemical equation

What is the primary source of heat in the central cores of the giant planets?

What is the result of rock's poor ability to transmit heat?

A major component of gasoline is octane. When octane is burned in air, it chemically reacts with oxygen gas to produce carbon dioxide and water.

What is the name of the branch of science that specifically studies the conversion of chemical energy to electrical energy and vice versa? biochemistry electrochemistry organic chemistry thermodynamics

What is the symbol for heat

When a single 1-gram piece of zinc is added to 3 M hydrochloric acid at 25°C, the reaction is slow. Which procedure would most likely increase the rate of the reaction if the reaction were repeated? A. using 1 gram of powdered zinc B.

Which accurately describes development? A. changing while growing B. growing larger over time C. decreasing the number of cells D. increasing the sizes of cells

A design team has come out with four different plans for building a bridge across a small stream. What is the quickest and most economical way of picking the right plan?