What is the mass of 0.25 moles of water? question 7 options: c 0.258 c4.58 c188 128

4.5 g

Explanation:

Given,

Moles of water = 0.25 moles

Molar mass of water () = = 18 g/mol

The formula for the calculation of moles is shown below:

Thus,

Mass of water in 0.25 moles = 4.5 g

answerspecific gravity;

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.