Why do oxygen molecules have a double bond with carbon?

The element thallium is 70% thallium-205 and 30% thallium-203. Calculate its relative atomic mass to 1 decimal place.

Classify the possible combinations of signs for a reaction's ΔH and ΔS values by the resulting spontaneityA. ΔH is positive and ΔS is negativeB. ΔH is positive and ΔS is positiveC. ΔH is negative and ΔS is positiveD.

If you lift an object that weighs 13 pounds through a distance of 3 feet, you have done foot-pounds of work.

Description of intensive property

Which atoms have the same number of neutrons? 1) H-1 and He-3 2) H-2 and He-3 3) H-3 and He-3 4) H-3 and He-4

The number of neutrons in the nucleus of an atom can be determined by (1) adding the atomic number to the mass number (2) subtracting the atomic number from the mass number (3) adding the mass number to the atomic mass (4) subtracting the mass

Trisha and her lab partner filled a beaker with 150 milliliters of a 0.10 M HCl solution. How many moles of HCl are in the beaker? Remember, molarity = moles liter.

Why is the correct name of compound Silicon Pentoxide and NOT Silicon Pentoxide?

10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have what volume?

Which type of heat transfer involves the movement of warmed material? A. radiation B. conduction C. convection