Explain how manipulation of light waves can cause reflection, refraction, diffusion, and absorption; and describe how different media (solid, liquid, or gas) affect wave behavior.

A sample of hydrogen gas has a volume of 8560. mL at standard temperature and a pressure of 1.50 atm. Calculate the number of moles of H, present in this gas sample.

Ammonia burns in oxygen gas to form nitric oxide (NO) and water vapor. How many volumes of NO are obtained from six volumes of ammonia at the same temperature and pressure

Based on these data, what is the average atomic mass of element b? 10.01 10.51 10.81 11.01

Which of these statements best explains how fossil records provide evidence to the scientific theory of evolution? A. They show how natural selection happened on Earth by chance. B.

How can i write a reaction equation for NH3 + H2SO4?

Describe the difference between the terms "mass number" and "atomic mass".

Do you think that crocodiles share a common ancestor with birds, dolphins and dogs

If an atom has 28 protons and 29 neutrons, what is the mass?

Aqueous concentrated nitric acid is 69% HNO3 by weight and has a density of 1.42 g/mL. What is the molarity of this solution? What is the molality of the solution?

As the elements in Group 17 are considered in order of increasing atomic number, the chemical reactivity of each successive element (1) decreases (2) increases (3) remains the same