1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
s344n2d4d5 [400]
2 years ago
8

Question 11 of 32

Chemistry
2 answers:
aev [14]2 years ago
6 0

Answer:

C

Explanation:

They form hypothesis first, then perform the experiment to test the hypothesis. After multiple experiments, they form a theory.

Thus C is correct

please give thanks by hitting that heart button :)

rjkz [21]2 years ago
5 0

Answer:

C

Explanation:

a hypothesis always comes first

You might be interested in
Write the chemical equation for this reaction. Use the picture I provide!
Lesechka [4]

Answer:

H2O

H2O

Explanation:

because the are only two hydrogen that can react to Oxygen

3 0
2 years ago
Please help me on question #2 please please really need help due today at 9:00pm please
sashaice [31]
No, the biggest star in the universe is UY scuti
8 0
2 years ago
15.24. Calcium hydroxide, also known as slaked lime, is used in industrial processes in which low concentrations of base are req
Ivahew [28]

The concentration of the hydroxide ions, OH¯ in 250 mL of the solution containing the maximum amount of dissolved calcium hydroxide is 0.01728 M

We'll begin by calculating the number of mole of in 0.16 g of Ca(OH)₂. This can be obtained as follow:

Mass of Ca(OH)₂ = 0.16 g

Molar mass of Ca(OH)₂ = 40 + 2[16 + 1] = 74 g/mol

<h3>Mole of Ca(OH)₂ =? </h3>

Mole = mass / molar mass

Mole of Ca(OH)₂ = 0.16 / 74

<h3>Mole of Ca(OH)₂ = 0.00216 mole </h3>

  • Next, we shall determine the molarity of the stock solution of Ca(OH)₂.

Mole of Ca(OH)₂ = 0.00216 mole

Volume = 100 mL = 100 / 1000 = 0.1 L

<h3>Molarity of Ca(OH)₂ =? </h3>

Molarity = mole / Volume

Molarity of Ca(OH)₂ = 0.00216 / 0.1

<h3>Molarity of Ca(OH)₂ = 0.0216 M</h3>

  • Next, we shall determine the molarity of the diluted solution. This can be obtained as follow:

Volume of stock solution (V₁) = 100 mL

Molarity of stock solution (M₁) = 0.0216 M

Volume of diluted solution (V₂) = 250 mL

<h3>Molarity of diluted solution (M₂) =?</h3>

<h3>M₁V₁ = M₂V₂</h3>

0.0216 × 100 = M₂ × 250

2.16 = M₂ × 250

Divide both side by 250

M₂ = 2.16 / 250

<h3>M₂ = 0.00864 M</h3>

Thus, the molarity of the diluted solution is 0.00864 M

  • Finally, we shall determine the concentration of the hydroxide ions, OH¯ in the diluted solution. This can be obtained as follow:

Ca(OH)₂(aq) —> Ca²⁺(aq) + 2OH¯(aq)

From the balanced equation above,

1 mole of Ca(OH)₂ contains 2 moles of OH¯

Therefore,

0.00864 M Ca(OH)₂ will contain =  2 × 0.00864 = 0.01728 M OH¯

Thus, the concentration of the hydroxide ions, OH¯ in 250 mL of the solution containing the maximum amount of dissolved calcium hydroxide is 0.01728 M

Learn more: brainly.com/question/11471182

7 0
3 years ago
HELPPPPPPPPPP MEEEEEEE
Monica [59]
50% - you have two bb pairs
5 0
2 years ago
Read 2 more answers
Which formula represents an acid?
Veseljchak [2.6K]
Are there answer choices or is this a write in answer?
7 0
3 years ago
Read 2 more answers
Other questions:
  • What describes redshift
    5·1 answer
  • Which is higher the freezing point of water or the melting point of ice?
    9·2 answers
  • How many experimental trials are needed before a hypothesis can be accepted as true ?
    6·2 answers
  • If you set up an experiment with two different independent variables, then the results would be_____.
    7·1 answer
  • Which pair of elements below have +3 ionic change?<br> A. Al and Ga<br> B. Sc and Y
    5·1 answer
  • When an object floats in water, it displaces a volume of water that has a weight equal to the weight of the object. If a ship ha
    9·1 answer
  • 25.0 mL of 0.212 M NaOH is neutralized by 13.6 mL of an HCl solution. The molarity of the HCl solution is
    10·1 answer
  • Card G represents the final event which leads to the formation of wind. In a complete sentence, write a statement which describe
    14·1 answer
  • Which biome has lost 95-99% of its natural habitat due to farming and ranching?
    10·1 answer
  • Which of the following statements are true of groups on the periodic table?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!