Assume the atomic mass of element x is 22.99 amu. a 22.42 g sample of x combines with 34.56 g of another element y to form a compound xy. calculate the atomic mass of y

The formula of the compound is xy.

This means that one mol of x combines with one mol of y. The proportion is 1:1

The number of moles in 22.42 g of x is equal to this weight divided by its atomic mass: #  moles of x = 22.42 g / 22. 99 g/mol = 0.975207

Then the number of moles of y is the same and you can calculate the atomic mass by dividing the mass by the number of moles:

aomic mass = weight in grams / # of moles = 34.56 g / 0.975207 mol = 35.44 g/mol = 35.44 amu.

 

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .