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Andrew [12]
3 years ago
7

Need help asap!! Will mark brainliest

Chemistry
2 answers:
ololo11 [35]3 years ago
5 0

Answer:

A

Explanation:

kvv77 [185]3 years ago
3 0
The answer is A. Tehe.
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7 g of table salt is add to water in a dish. The dish is then heated until all the water evaporates. Assuming no chemical reacti
Aleks04 [339]

Answer:

7 grams

Explanation:

The water evaporates leaving the same amount of salt behind

hope this helps...

8 0
3 years ago
PLEASE HELP :"( DUE NOW!!
Citrus2011 [14]

Answer:

The correct answer is  

[CH4][H2O]/[CO][H2]3

Option 3 is correct

Explanation:

Step 1: Data given

For the equation aA + bB ⇆ cC + dD

The equilibrium constant is [C]^c * [D]^d / [A]^a*[B]^b

Step 2: Calculate the equilibrium constant Kc

CO+3H2⇌CH4+H2O

Kc = [H2O][CH4] / [CO][H2]³

The correct answer is  

[CH4][H2O]/[CO][H2]3

Option 3 is correct

5 0
4 years ago
Question is in the files
Sedaia [141]

Answer:

it uses measure of speed

5 0
3 years ago
What quantity of potassium phosphate, in grams, is required to prepare 500.0 ml of solution where you the concentration of potas
Readme [11.4K]

Answer: 3.54

Explanation:

You're forgetting to divide by 3 for the 3 moles of potassium that are in potassium phosphate.

Potassium Phosphate= K3PO4

3 0
3 years ago
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [H2]eq = 0.14 M, [Cl2]eq
pentagon [3]

Question:

A) 12

B) 29

C) 2.1 × 10⁻²

D) 8.7 × 10⁻²

E) 47

Answer:

The correct option is;

E) 47

Explanation:

Kc, which is the equilibrium constant of a chemical reaction is derived by finding the ratio between the product of the equilibrium concentration of the product raised to their respective coefficients to the product of the equilibrium concentration of the reactants also raised to their respective coefficients.

Here we have;

[H₂] = 0.14 M

[Cl₂] = 0.39 M

[HCl] = 1.6

The reaction is given as follows;

H₂ (g) + Cl₂ (g) ⇄ 2HCl (g)

The formula for Kc is given as follows;

Kc = \frac{[HCl]^2}{[H_2][Cl_2]} = \frac{1.6^2}{0.14 \times 0.39}  = 46.886

Therefore, the Kc for the reaction is approximately equal to 47.

3 0
3 years ago
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