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Lynna [10]
2 years ago
14

Based on the observations of how the different forms of salt start mixing with the

Chemistry
2 answers:
vampirchik [111]2 years ago
8 0
I just need more points
zimovet [89]2 years ago
7 0
I would expect fine salt to fully dissolve by the end of 45 minutes. Since the other types of salt are not fine and tiny, they would take longer to dissolve
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14. What volume (mL) of water do I need to add to 425
Reptile [31]

Answer:

212.5 mL

both the original and the diluted solution have 0.765 moles of KCl

Explanation:

c1V1 = c2V2

V2 = c1V1/c2 = (1.8 M×425 mL)/1.2 M = 637.5 mL

(637.5 - 425) mL = 212.5 mL

n = (1.8 mol/L)(0.425 L) = 0.765 moles of KCl

since it's a dilution, the diluted solution has the same number of moles as the original solution, 0.765 moles of KCl

7 0
3 years ago
A car traveling at 30 m/s comes to a stop in 5 seconds. What is the acceleration of this car?
aliina [53]

Answer:

6m/s brainliest?

Explanation:

5 0
2 years ago
Read 2 more answers
Silvers symbol on the periodic table of the elements is Ag. what else is true of silver?
pishuonlain [190]
The answer should be D hope this helps
4 0
3 years ago
You have a ballon filled with hydrogen gas which keeps it at a constant pressure, regardless the volume. The initial volume of t
abruzzese [7]

Answer:

619°C

Explanation:

Given data:

Initial volume of gas = 736 mL

Initial temperature = 15.0°C

Final volume of gas = 2.28 L

Final temperature = ?

Solution:

Initial volume of gas = 736 mL (736mL× 1L/1000 mL = 0.736 L)

Initial temperature = 15.0°C (15+273 = 288 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

T₂ = T₁V₂/V₁  

T₂ = 2.28 L × 288 K / 0.736 L

T₂ = 656.6 L.K / 0.736 L

T₂ = 892.2 K

K to °C:

892.2 - 273.15 = 619°C

7 0
3 years ago
Calculate the formula mass of magnesium chloride, MgCl2?
viktelen [127]
Mg = 24.3
Cl = 35.5

24.3 + 35.5 x 2 = 95.3 ~ 95.21 ( all periodic tabes have different accuracies)

Let me know if you have any questions and please give brainliest if you like my answer:)
8 0
3 years ago
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