What does the dog say?vwooooof!
Gyyghb here’s nnuvygv
Answer:
43.47 g
Explanation:
The <em>boiling point elevation</em> is described as:
Where ΔT is the difference in boiling points: 120.6-118.4 = 2.2 °C
K is the boiling point elevation constant, K= 2.40 °C·kg·mol⁻¹
and m is the molality of the solution (molality = mol solute/kg solvent).
So first we <u>calculate the molality of the solution</u>:
- 2.2 °C = 2.40 °C·kg·mol⁻¹ * m
Now we calculate the moles of benzamide (C₇H₇NO, MW=315g/mol), using the given mass of the liquid X.
- 150 g ⇒ 150/1000 = 0.150 kg
- 0.917 m = molC₇H₇NO / 0.150kg
Finally we convert moles of C₇H₇NO into grams, using its molecular weight:
- 0.138 molC₇H₇NO * 315g/mol = 43.47 g
Answer:
the "d" option
Explanation:
Cómo se pronuncia
To calculate the flow I need the volume and time to comply with the formula:
S = V / t
V = volume
t = time
In this problem I have volume and density as data.
There is no way to calculate the time so the correct answer is the "d" option
WHATS THATT ???????????????
