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kozerog [31]
3 years ago
13

If Frank creates 20 waves every 10 seconds, then how many waves does he create EVERY SECOND?

Chemistry
1 answer:
Naddika [18.5K]3 years ago
6 0

Answer:

2 waves

Explanation:

If Frank creates 20 waves every second then the way you solve is turn it into a proportion 20 waves/10 secs = x/1 sec which then turns into the equation of 10x=20 where x=2 hence Franks creates 2 waves every second.

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What is the molality of nitric acid in a concentrated solution of nitric acid (68.0% HNO3 by mass)? (a) Outline the steps necess
RoseWind [281]

Answer:

33.8 m

Explanation:

(a) We want to know the molality of nitric acid in a concentrated solution of nitric acid (68.0% HNO₃ by mass).

Step 1: Determine the mass of HNO₃ and water in 100 grams of solution.

Step 2: Convert the mass of HNO₃ to moles.

Step 3: Convert the mass of water to kilograms.

Step 4: Calculate the molality.

(b)

Step 1

In 100 g of solution, there are 68.0 g of HNO₃ and 100 g - 68.0 g = 32.0 g of water.

Step 2

The molar mass of HNO₃ is 63.01 g/mol. The moles corresponding to 68.0 g are:

68.0 g × (1 mol/63.01 g) = 1.08 mol

Step 3

The mass of water is 32.0 g = 0.0320 kg

Step 4

The molality of HNO₃ is:

m = moles of solute / kilograms of solvent

m = 1.08 mol / 0.0320 kg

m = 33.8 m

5 0
4 years ago
Read 2 more answers
175 ml of a 1.6 m solution of kcl is diluted to a new volume of 1.0 l. what is the new concentration of the solution?
zhenek [66]

The new concentration of the KCl solution after mixing 1 L new volume is 0.28 M.

<h3>How do we calculate the concentration?</h3>

Concentration in terms of molarity will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

M₁ = molarity of old KCl solution = 1.6 M

V₁ = volume of old KCl solution = 175 mL = 0.175 L

M₂ = molarity of new KCl solution = ?

V₂ = volume of new KCl solution = 1 L

On putting all these values on the above equation, we get

M₂ = (1.6)(0.175) / (1) = 0.28 M

Hence resultant concentration is 0.28 M.

To know more about molarity, visit the below link:

brainly.com/question/24305514

7 0
2 years ago
What is the [OH-] in a solution<br> with a pol of 7.86?
yulyashka [42]

Answer:

pH of 7.86, then the [OH-] is equal to 10^(14-7.86) = 10^6.14 M

Explanation:

3 0
3 years ago
What is the absolute pressure in compartment d in atm g?
xenn [34]
Atmospheric pressure from barometer = (9810) × (13.6) × (0.720) = 96060 Pa = 96.06 kPa Absolute pressure in compartment A, 496.06 kPa P = P + P abs, A gauge, A atm = 400 + 96.06 = Absolute Pressure from barometer
6 0
3 years ago
As a student , what can you do to help in preventing pollution in your community ?​
aliya0001 [1]

Answer: as a student , i will  do to help in preventing pollution in my  community :

Reduce the number of trips you take in your car.

Reduce or eliminate fireplace and wood stove use.

Avoid burning leaves, trash, and other materials.

Avoid using gas-powered lawn and garden equipment.

Using non-toxic or less toxic chemicals as cleaners, degreasers and other maintenance chemicals. Implementing water and energy conservation practices. Reusing materials such as drums and pallets rather than disposing of them as waste.

Store your household chemicals (including cleaning products, paints, fuel canisters, etc.) as far away as possible from the living space and, if possible, in metal cabinets. Do not store chemicals in areas where you spend most of the time. Also, do not store chemicals in open cabinets or shelves.

Use Public Transportation. Use your vehicle a lot less often. .

Drive Smart. .

Do Regular Car Check-Up. .

Keep Car Tires Properly Inflated. .

Buy Energy-Efficient Vehicles. .

Consider “going green” .

Plant a Garden. .

Use Low-VOC or Water-based Paints.

Avoid smoking indoors (but quitting smoking is the best answer for overall health).

Use craft supplies in well-ventilated areas.

Make sure your gas stove is well-ventilated.

Minimize clutter.

Remove carpeting if possible.

Use a dehumidifier and/or air conditioner to reduce moisture.

How can students help reduce pollution?

Help Recycling

The most obvious things to reuse are plastic, glass, metal, and paper or fabric (paper and organic fabric are made of the same component, cellulose, and are recycled in a similar way). The color-coded trash bins show where each of these components can be put to be recycled in a proper way.

REDUSE ,REUSE , RECYCLE

3 0
3 years ago
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