Astudent was asked to determine the densities of the four metals listed. the student was asked to determine the density of an unknown metallic substance. the metallic substance is an alloy. this particular alloy is a 50/50 mixture of two metals listed in the table. the student found the density of the alloy to be 9.32 g/cm3. according to the density, what two metals make up the alloy? a) lead and gold b) copper and tin c) copper and gold d) tin and lead

D is correct

Explanation:

because

we know that

density of lead is 11.36 g/cm3

and

density of tin is 7.31 g/cm3

so..

density of alloy by mixing 50/50

=(11.36+7.31)/2 g/cm3

=18.67/2 g/cm3

=9.33 g/cm3

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

i don,t know so just answer mine