Work out the area of a rectangle with base, b=28mm and perimeter, p=62mm.

Water (H2o) is composed of the same elements as hydrogen peroxide (H2o2) why do these substances have different properties A.) The atoms are arranged differently in each molecule B.) The molecules are the same C.) The atoms are the same D.

Which molecule contains ten hydrogen atoms

What is the difference between a mechanical wave and an electric magnetic way

In each of the following, how many moles of each element or compound are present? 10.0 g H = 0.25 g Na = 1.0 x 102 mg H2O =

Which runner has greater kinetic energy: a 46-kilogram runner moving at a speed of 8 meters per second or a 92-kilogram runner moving at a speed of 4 meters per second? What is the amount of the runner's kinetic energy in Joules?

Which atom has a change in oxidation number of - 3 in the following redox reaction K2Cr2O7 + H2O + S - - > KOH + Cr2O3 + SO2

Why does fluorine have a higher electronegativity than lithium?

What mineral is this? Irregularly shaped, white with nonmetallic luster, the hardness of 2.5, shows cubic cleavage and dissolves easily in water.

The passage of the USA Patriot Act of 2001 and the creation of the Department of Homeland Security reflect the determination of the United States government to (1) search for weapons of mass destruction in South Asia (2) increase the globalization

Is it possible for 2 different elements to have the same atomic number