Question

Some help please :)??

Answer 1

You first find the molecule formulae for both:

Explanation:

Sucrose `C_12H_22O_11`

`C_12: 12xx12.01=144.12`
`H_22: 22xx1.01=22.22`
`O_11: 11xx16.00=176.00`
These added `=342.34`

Palmitic acid `C_16H_32O_2`

`C_16: 16xx12.01=192.16`
`H_32: 32xx1.01=32.32`
`O_2: 2xx16.00=32.00`
These added `=256.48`

Note: because of the rounding, we can't trust the last digit, so I would round to `342.3` and `256.5` respectively.