By studying fossils, scientists get an idea of ...

Visible light travels at a speed 3.0 * 108 of m/s. If red light has a wavelength of 6.5 * 10-7 m, what the frequency of this light?

Consider the following equilibrium reaction having gaseous reactants and products. 4HCl + O2 ⇌ 2H2O + Cl2 Which of the following would result from increasing the volume of oxygen? A. The volume of hydrochloric acid increases. B.

How many electrons make up a charge of - 50.0 μc? Express your answer using three significant figures?

2H2 (g) + 2NO (g) →2H2O (g) + N2 (g) Part A If the concentration of NO changed from 0.100 M to 0.025 M in the first 15 minutes of the reaction, what is the average rate of the reaction during this time interval?

What does the periodic law state? When elements are arranged in order of increasing atomic mass, there is a recurring pattern to their physical and chemical properties.

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What is a potential benefit of fuel cell cars? increased efficiency converting gasoline to energy no recharging necessary decreased automobile cost larger engines

Water is a great solvent. For example, it causes ionic compounds like sodium chloride (table salt) to dissociate. One of these reasons that water does is because it is polar molecule.

For most compounds with a single keto group in the molecule, equilibrium favors the keto form over the enol form of the compound. this is due largely to what?