Which one of the following is not a homogeneous mixture?

1 answer:

3 0

Vegetable soup should be the correct answer. The reason for this is that it can easily be split, where as the rest would be very difficault if not imposible because of chemical change.

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Take a cup of water, add sugar, and stir. if the resulting solution contains sugar crystals that do not dissolve, the solution i

Strike441 [17]

When a solvent has as much of the dilute dissolved in it as possible, then it is saturated.

If you were to heat the water, its capacity would increase and would then be super-saturated because it has more dissolved in it than possible as room temp.

Since there is no heating being done, the water is just saturated.

Hope that helps!

6 0

2 years ago

If a car travels 400m in 20 seconds, how fast is it going

prohojiy [21]

Answer:

Just apply the formula

speed = distance/ time

= 400/20

= 20 m/s

this is the way to do it

3 0

2 years ago

Read 2 more answers

What is the mass of 2.65 millimoles of sulfur?

Bas_tet [7]

Divide this problem in to two steps: 1. Convert millimoles to moles. 2. Convert moles to grams.

1.
2.65 mlmol x 1mol/1000mlmol=.00265mol

2.
.00265mol x 32.065g/1 mol=.0850g S

Let me know if you need more explanation on why I used the conversions that I did.

6 0

3 years ago

What is the mass of 1.867 moles of the element<br>chlorine

alekssr [168]

Answer:

66.185g

Explanation:

m= n ×MM

m= 1.867 × 35.45

m= 66.185g

8 0

3 years ago

Suppose you have 1.00 l of an aqueous buffer containing 60.0 mmol acetic acid (pka = 4.76) and 40.0 mmol acetate. what volume of

butalik [34]

Required pH = 4.93
- OH⁻ from NaOH reacts with CH₃COOH giving CH₃COO⁻ and H₂O
- Let the volume of 3.5 M NaOH be x ml
Moles of NaOH = Moles of OH⁻ = Molarity * x ml = 3.5x mmol
- The reaction table for moles is as follows:
CH₃COOH + OH⁻ → CH₃COO⁻ + H₂O
Initial 60 3.5x 40
Change -3.5x -3.5x +3.5x
Final (60-3.5x) 0 (40+3.5x)
- Substitute in Henderson equation and solve for x:
pH = pKa + log $\frac{[CH_{3}COO^-]}{[CH_3COOH]}$
4.93 = 4.76 + log $\frac{(40+3.5x)}{(60-3.5x)}$
0.17 = log $\frac{(40+3.5x)}{(60-3.5x)}$
$\frac{(40+3.5x)}{(60-3.5x)} = 1.479$
x = 5.62 ml NaOH required

4 0

2 years ago