How many atoms are in 5.548 g of thorium

The law of mass conservationis another fundamental law in chemistry. This law states that matter can neither be created nor destroyed, which means that in a chemical reaction where all of the reactants is converted into products, the mass of

The minimum energy required to break the oxygen-oxygen bond in oxygen is 495 kJ/mol. What is the longest wavelength of radiation that possesses the necessary energy to break this bond? What type of electromagnetic radiation is this?

Which is an example of negative acceleration? a) a snowboarder who increases speed when traveling downhill b) a biker who maintains a constant speed through a race c) a skateboarder who reduces speed when moving up a hill d) a runner who fluctuates

Will a precipitate form (yes or no) when 50.0 ml of 1.2 * 10-3 m pb (no3) 2 are added to 50.0 ml of 2.0 * 10-4 m na2s? if so, identify the precipitate.

Weight is best described as: A. the interval between two events. B. the amount of matter in an object. C. a measure of gravitational force on an object. D. the amount of surface included within a set of boundaries.

What is buffer solution?

How can you simulate the radioactive half-life of an element?

What are the horizontal rows on the periodic table?

What is 19 hundred thousandths in scientific notation

There state of matter that keeps its shape and volume when it is placed in a container