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musickatia [10]
2 years ago
12

PLEASE HELP ME !!!!!!!

Chemistry
1 answer:
love history [14]2 years ago
5 0

Answer:

it would be 5,045

Explanation:

because it is closer to 5,000. pls correct me if wrong

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Kruka [31]

Answer:

Well I know that when the liquid changes from clear to dark blue and small bubbles form and rise to the surface that is a reaction

Explanation:

7 0
3 years ago
If the stocks in a system always decrease and never increase, the system has what type of feedback loop? (Select the best answer
AlekseyPX
A psitive feedback
rawmaterial waste

6 0
3 years ago
A solution is made by dissolving 10.20 grams of glucose (C6H12O6) in 355 grams of water. What is the freezing point depression o
Ludmilka [50]

Answer:

0.297 °C

Step-by-step explanation:

The formula for the <em>freezing point depression </em>ΔT_f is

ΔT_f = iK_f·b

i is the van’t Hoff factor: the number of moles of particles you get from a solute.

For glucose,

       glucose(s) ⟶ glucose(aq)

1 mole glucose ⟶ 1 mol particles     i = 1

Data:

Mass of glucose = 10.20 g

  Mass of water = 355 g

                 ΔT_f = 1.86 °C·kg·mol⁻¹

Calculations:

(a) <em>Moles of glucose </em>

n = 10.20 g × (1 mol/180.16 g)

  = 0.056 62 mol

(b) <em>Kilograms of water </em>

m = 355 g × (1 kg/1000 g)

   = 0.355 kg

(c) <em>Molal concentration </em>

b = moles of solute/kilograms of solvent

  = 0.056 62 mol/0.355 kg

  = 0.1595 mol·kg⁻¹

(d) <em>Freezing point depression </em>

ΔT_f = 1 × 1.86 × 0.1595

        = 0.297 °C

3 0
3 years ago
Q2. Which of the following molecules may show.
jonny [76]

Answer:

I think is answer

CH3cl3

5 0
3 years ago
Which element melts at room temperature?
just olya [345]
Francium is an element that melts at room temperature. Francium is a highly reactive element, and only contains one valence electron, which is very ironic in my opinion. 
4 0
3 years ago
Read 2 more answers
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