Question

question 6 (2 points)
o 15.999
c 12.011
h 1.008
x 13.665
z 29.456
n 14.007
the chart above lists the molar masses for some elements on the periodic table, including two fake elements in units of g/mol. use the chart to calculate the molar mass of x(ch₃)₃. do not round your answer. __________ g/mol
blank 1

Explanation:

Step1: Identify molar - mass of each element in the formula

The formula is $X(CH_3)_3$. There is 1 X atom, 3 C atoms, and 9 H atoms.

Step2: Calculate the total molar - mass of C atoms

The molar - mass of C is 12.011 g/mol. For 3 C atoms, the mass is $3\times12.011 = 36.033$ g/mol.

Step3: Calculate the total molar - mass of H atoms

The molar - mass of H is 1.008 g/mol. For 9 H atoms, the mass is $9\times1.008=9.072$ g/mol.

Step4: Calculate the molar - mass of X

The molar - mass of X is 13.665 g/mol.

Step5: Calculate the molar - mass of $X(CH_3)_3$

Add the molar - masses of X, C, and H together: $13.665 + 36.033+9.072=58.77$ g/mol.

Answer:

58.77