How many neutrons are in the calcium-47 nucleus?

Which is a compound? A. Kr B. O2 C. Cl2 D. CuF2

Which Statement is correct about two objects that have gravitational force?

What is the number of moles of 27.6g of lithium?

If the mass of 1 mole of chlorine atoms is 35.5g, calculate the mass of 6.0 moles of chlorine atoms.

0.509g sample pure platinumetal was reacted with HCl to firm O. 889g of platinum and chlorine. what is the percent by mass of platinum

Give two reasons why a 100% yield is not obtained in actual chemical manufacturing process.

What's the symbol for nitrogen

A student performs the reduction of 4-nitrobenzaldehyde (151.12 g/mol) with sodium borohydride (37.83 g/mol) in the presence of ethanol. The student mixes 4.13 g of 4-nitrobenzaldehyde with 0.700 g of sodium borohydride and obtains 1.

Which of the following subatomic particles always has a positive charge?

Which term is described as a long, narrow depression in the ocean floor?