What volume will 0.416 g of krypton gas occupy at STP?

0.11L

Explanation:

To get the volume of krypton at stp, we must cover the mass given in the question to mole. This is illustrated below

Mass of krypton = 0.416g

MM of krypton = 84g/mol

Number of mole = Mass /Molar Mass

Number of mole of krypton = 0.416/84 = 0.00495mol

1mole of a substance occupies 22.4L at stp this implies that 1mole of krypton also occupy 22.4L at stp. Therefore,

0.00495mol of krypton will occupy = 0.00495 x 22.4L = 0.11L

d.) circle motion requires a force to give it a centripetal acceleration.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.