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stepladder [879]
3 years ago
11

100 points + BRAINLEST ! *NO SPAM *

Chemistry
1 answer:
crimeas [40]3 years ago
4 0

Answer:

Both Groundwater and surface water are largely replenished by rain water.

Explanation:

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How big is a proton?
babymother [125]
0.84 to 0.87 fm, the square charge of the radius is the proton
5 0
4 years ago
In terms of intermolecular forces why ethanol has a much higher boiling point than ethene at standard point
leva [86]
Ethanol contains an alcohol group (-OH), which includes hydrogen bonding. Hydrogen bonding is stronger than other IMFs such as Van der Waals forces and Dipole-Dipole.

Ethene only has Van der Waals forces as it is an alkene with only C-H or C-C bonds. These means that the forces are not as strong.

Since ethanol contains hydrogen bonding, it will take a higher temperature in order to break these bonds, and thus results in a higher boiling point than ethene. 
6 0
3 years ago
How much 0.02 m kmno4 solution should be needed if the solutions tested have a composition of 3% h2o2 by mass?
Nostrana [21]
When the concentration is expressed in mass percentage, that means there is 3 g of solvent H₂O₂ in 100 grams of the solution. Then, that means the remaining amount of solute is 97 g. We use the value of molarity (moles/liters) to determine the amount of solution in liters, denoted as V. The solution is as follows:

0.02 mol KMnO4/L solution * 158.034 g KMnO4/mol * V = 97 g KMnO4

Solving for V,
V = 30.69 L
6 0
3 years ago
You have 47.0 mL of a 2.00 M concentrated or "stock" solution that must be diluted to 0.500 M. How much water should you add?
Inessa [10]

The required volume of water to make the dilute solution of 0.5 M is 188 mL.

<h3>How do we calculate the required volume?</h3>

Required volume of water to dilute the stock solution will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

  • M₁ & V₁ are the molarity and volume of stock solution.
  • M₂ & V₂ are the molarity and volume of dilute solution.

On putting values from the question to the above equation, we get

V₂ = (2)(47) / (0.5) = 188mL

Hence required volume of water is 188 mL.

To know more about volume & concentration, visit the below link:
brainly.com/question/7208546

#SPJ1

6 0
2 years ago
What is the substance called that is being dissolved in a solution?
Novosadov [1.4K]

Answer:

Solute

Explanation:

A solvent is what the solute is being put in in order to dissolve

4 0
4 years ago
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