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2 years ago

Question 4

Chemistry

1 answer:

natka813 [3]2 years ago

5 0

I can confirm that's the correct answer

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Some acids are capable of drawing water out of an object. This process is called _____.

vagabundo [1.1K]

Some acids are capable of drawing water out of an object. This process is called dehydration.

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4 years ago

EASYYYYY!!!!!!!!

nlexa [21]

crop rotation, green manure, and bone meal

Explanation:

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3 years ago

What is the density of a liquid that has a volume of 20.0 ml and a mass of 330 grams?

Dmitry_Shevchenko [17]

Density=mass/volume
density=330/20
density=16.5g/ml

7 0

3 years ago

A solution contains 482.6 g

mariarad [96]

Answer:

$\large \boxed{\text{102.57 $\, ^{\circ}$C}}$

Explanation:

Data:

m₂ = 482.6 g sucrose

m₁ = 0.2804 kg water

Calculations:

The formula for the boiling point elevation ΔTb is

$\Delta T_{\text{b}} = iK_{\text{b}}b$

i is the van’t Hoff factor — the number of moles of particles you get from 1 mol of solute. For sucrose, i = 1.

1. Moles of sucrose

$n = \text{482.6 g} \times \dfrac{\text{1 mol}}{\text{342.30 g}} = \text{1.410 mol}$

2. Molal concentration of sucrose

$b = \dfrac{\text{1.410 mol}}{\text{0.2804 kg}} = \text{5.029 mol/kg}$

3. Increase in boiling point

$\rm \Delta T_{b} = iK_{b}b = 1 \times 0.512 \, \, ^{\circ}\text{C} \cdot kg \cdot mol^{-1} \, \times 5.029 \cdot mol \cdot kg^{-1} = 2.574 \, ^{\circ}\text{C}$

4. Boiling point

$\rm T_{b} = T_{b}^{\circ} + \Delta T_{b} = 100.00 \, ^{\circ}\text{C} + 2.574 \, ^{\circ}\text{C} = \mathbf{102.57 \, ^{\circ}C}\\\rm \text{The boiling point of the solution is $\large \boxed{\mathbf{102.57 \, ^{\circ}C}}$}$

7 0

3 years ago

Examine the equation.

azamat

4 is a coefficient of the formula

3 0

4 years ago

Read 2 more answers