Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas are formed when 48.7 grams of sodium are added to water?

A 12.2-g sample of x reacts with a sample of y to form 78.9g of xy. what is the mass of y that reacted?

Part 1: Use complete sentences to explain why solar storms occur. Part 2: Give two examples in which solar storms impact Earth.

U-232 U-235 U-236 U-238 These nuclei all have a different number of A) electrons. B) neutrons. C) nuclei. D) protons.

The initial velocity decreases as the launch height increases. True or false?

The enthalpy of formation of CO2 at 25oC is - 393.51 kJ/mol. What is the enthalpy of formation at 500 oC?

Maya's playroom is 12 m2. The length of the room is 3 m. What is the width? 4 m 8 m 15 m 36 m

How many moles of each element are in this sample p2o3

Does uranium or barium nucleus have a stronger net force holding its protons

Which statement correctly compares DNA and RNA? DNA is made up of a single strand, and RNA is made up of a double strand. DNA is made up of a double strand, and RNA is made up of a single strand. Both DNA and RNA are made up of a single strand.

Which electron configuration represents the electrons in an atom of Ga in an excited state?