A0.105-g sample of x2 contains 8.92x1020 molecules. the compound mx3 consists of 54.47% x by mass. what are the identities of m and x, and what is the correct name for mx3?

The element X is chlorine.

The element M is Ytterium.

Ytterium (III) chloride is the correct name for

Explanation:

Molecules of

Moles of

n = 0.001481 mol

Mass of

Molar mass of

M = 70.87 g/mol

Atomic mass of X =

X is a chlorine atom.

The compound consists of 54.47% X by mass.

M' = Molar mass of compound

Percentage of X in compound = 54.47%

M' = 195.16 g/mol

Atomic mass of M = a

a = 88.86 g./mol

The element M is Ytterium.

Ytterium (III) chloride is the correct name for

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.