The element magnesium and the element calcium which one has the higher atomic mass

What scientist was responsible for discovering the neutron? A) Niels Bohr B) Robert Millikan C) James Chadwick D) Ernest Rutherford

How many grams of agarose would you add to make 50ml of a 2 percent gel? why?

How many moles of sodium ions are contained in 99.6 mg of Na2SO3? The molar mass of Na2SO3 is 126.05g/mol.

Calculate the pH for an acid that has a [H+] of 5.8 x10^-11 M.

A container is filled with 5.00 g of CH4 and 1.00 g of Ne until the total pressure inside the container is 20.0 atm. What is the partial pressure of the CH4?

How does a solid turn into a liquid

What does the Ka represent in the equation and why is it important?

Is an american alligator a autotroph?

A/1 * B/C = D, You find yourself with 17 guilders (a gold coin) but you are planning on taking a trip to a country where the local currency is the florin. The current exchange rate is 2 guilders for every 3 florins.

The burning of wood in a fireplace generates heat and light in the form of flames. Which of the following terms best describes this type of reaction? a. condensation reaction b. exergonic reaction c. endergonic reaction d.