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777dan777 [17]
3 years ago
9

What substance is most soluable at 0°C​

Chemistry
1 answer:
NeX [460]3 years ago
6 0

Potassium nitrate changes the most to from 0 C to 100 C

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Which statement is true? Postively charged objects attract other positively charged objects negatively charged objects attract o
ANEK [815]

Answer:

Explanation:one is true because if it is positiveit would not be attracting it would be sepperating

8 0
2 years ago
What exactly does the 2+ mean on element Fe2+?
enot [183]
It means it is an ion. It has lost two protons making it a positive ion.
8 0
3 years ago
The equilibrium constant for the chemical equation N2(g) + 3H2(g) ⇌ 2NH3(g) and Kp=0.174 at 243°C. Calculate the value of Kc for
Mashcka [7]

Answer:

The Kc of this reaction is 311.97

Explanation:

Step 1: Data given

Kp = 0.174

Temperature = 243 °C

Step 2: The balanced equation

N2(g) + 3H2(g) ⇌ 2NH3(g)

Step 3: Calculate Kc

Kp = Kc *(RT)^Δn

⇒ with Kp = 0.174

⇒ with Kc = TO BE DETERMINED

⇒ with R = the gas constant = 0.08206 Latm/Kmol

⇒ with T = the temperature = 243 °C = 516 K

⇒ with Δn = number of moles products - moles reactants  2 – (1 + 3) = -2

0.174 = Kc (0.08206*516)^-2

Kc = 311.97

The Kc of this reaction is 311.97

3 0
3 years ago
About 55L of a gas in a flexible container is under a pressure of 3.2 atm and at a temperature of 520K. What is the new volume o
vampirchik [111]

Answer:

30.62 L

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 55 L

Initial pressure (P₁) = 3.2 atm

Initial temperature (T₁) = 520 K

Final temperature (T₂) = 760 K

Final pressure (P₂) = 8.4 atm

Final volume (V₂) =?

The final volume of the gas can be obtained as follow:

P₁V₁ / T₁ = P₂V₂ / T₂

3.2 × 55 / 520 = 8.4 × V₂ / 760

176 / 520 = 8.4 × V₂ / 760

Cross multiply

520 × 8.4 × V₂ = 176 × 760

4368 × V₂ = 133760

Divide both side by 4368

V₂ = 133760 / 4368

V₂ = 30.62 L

Therefore, the new volume of the gas is 30.62 L

7 0
2 years ago
If 10 staples have a mass of 1.33 g, what will be the mass of 225 staples?
Leona [35]

Answer:

A) 29.9g

Explanation:

first find the weight of 1 staple.

then multiply with 225

5 0
2 years ago
Read 2 more answers
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