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sleet_krkn [62]
2 years ago
10

WILL GIVE BRAINLIEST helpp asapp

Chemistry
2 answers:
kati45 [8]2 years ago
6 0
The answers are:

1. D
2. B if it is a check all that are true it is b & d
nataly862011 [7]2 years ago
4 0
Question 1, answer is D because in liquid particles move faster than in solid. The closer the particles, the slower they move, the lesser the energy.

Question 2, answer is A because in liquid, the particles are further away than in solid
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Which statement best describes the relationship between the giraffe and the tree shown above?
Dominik [7]

Answer

a

Explanation:

the giraffe doesn't need carbon dioxide

8 0
2 years ago
PLEASE HELP I'LL GIVE YOU BRAINLIEST!!
In-s [12.5K]

Answer:

C

Explanation:

5 0
2 years ago
classify the following compounds as ionic (metal + nonmetal) , covalent (nonmetal + nonmetal) or both (compound containing a pol
musickatia [10]

Answer:

1. ionic

2. covalent

3. covalent

4. both

Explanation:

6 0
3 years ago
The normal freezing point of water (H2O) is 0.00 oC and its Kf value is 1.86 oC/m. A nonvolatile, nonelectrolyte that dissolves
adelina 88 [10]

Answer:

3.74g of ethylene glycol must be added to decrease the freezing point by 0.400°C

Explanation:

One colligative property is the freezing point depression due the addition of a solute. The equation is:

ΔT=Kf*m*i

<em>Where ΔT is change in temperature = 0.400°C</em>

<em>Kf is freezing point constant of the solvent = 1.86°C/m</em>

<em>m is molality of the solution (Moles of solute / kg of solvent)</em>

<em>And i is Van't Hoff constant (1 for a nonelectrolyte)</em>

Replacing:

0.400°C =1.86°C/m*m*1

0.400°C / 1.86°C/m*1 = 0.215m

As mass of solvent is 280.0g = 0.2800kg, the moles of the solute are:

0.2800kg * (0.215moles / 1kg) = 0.0602 moles of solute must be added.

The mass of ethylene glycol must be added is:

0.0602 moles * (62.10g / mol) =

3.74g of ethylene glycol must be added to decrease the freezing point by 0.400°C

<em />

6 0
3 years ago
If a student has 125 mL of a 4.00 M CuSO4 solution and needs a 1.50 M solution, what volume do they need to dilute it to?
lara31 [8.8K]

Answer:

333.3mL

Explanation:

Using the formula as follows:

C1V1 = C2V2

Where;

C1 = initial concentration (M)

C2 = final concentration (M)

V1 = initial volume (mL)

V2 = final volume (mL)

According to the information provided in this question,

C1 = 4.00M

C2 = 1.50M

V1 = 125mL

V2 = ?

Using C1V1 = C2V2

4 × 125 = 1.5 × V2

500 = 1.5V2

V2 = 500/1.5

V2 = 333.3mL

Therefore, the CuSO4 solution needs to be diluted to 333.3mL to make 1.50 M solution.

3 0
2 years ago
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