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3 years ago

Must new substance before when you have a chemical property

Chemistry

1 answer:

Ivahew [28]3 years ago

4 0

Can you restate the question so maybe it will be easier to answer it for you.

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We must __________ forces to calculate net force if the forces are going in OPPOSITE directions.

Virty [35]

Answer:

subtract

Explanation:

To find the net force of two bodies going in opposite directions, we must subtract the forces this is because they are not additive forces.

The net force is the resultant force acting on a body.
This resultant force is the single force that will produce the same effects as all given forces.
When forces are directed oppositely on a body, they are subtracted from each other to find the net force.

5 0

2 years ago

Your amplifier is playing a 200 Hz tone. When you double the amplitude(loudness), what happens to the speed of the sound (v) and

kherson [118]

Its d. Speed (v) and frequency(f) both stay the same.

Because Amplitude does not affect wave frequency. When you put more energy into the wave (larger amplitude) it does not affect how often you repeat a cycle.
Also speed can be altered when the medium changes through which it travels.

8 0

3 years ago

How many grams of potassium benzoate trihydrate, KC H302 - 3H20. are needed to prepare 1.5 L of a 0.120M solution of potassium b

Annette [7]

Answer: The mass of potassium benzoate is $8.40\times 10^{-4}g$

Explanation:

To calculate the mass of solute, we use the equation used to calculate the molarity of solution:

$\text{Molarity of the solution}=\frac{\text{Mass of solute}}{\text{Molar mass of solute}\times \text{Volume of solution (in L)}}$

We are given:

Molarity of solution = 0.120 M

Molar mass of potassium benzoate trihydrate = 214.26 g/mol

Volume of solution = 1.5 L

Putting values in above equation, we get:

$0.120M=\frac{\text{Mass of potassium benzoate trihydrate}}{214.26\times 1.5}\\\\\text{Mass of potassium benzoate trihydrate}=\frac{0.120mol/L\times 1.5L}{214.26g/mol}=8.40\times 10^{-4}g$

Hence, the mass of potassium benzoate is $8.40\times 10^{-4}g$

8 0

2 years ago

What is the molarity of a solution containing 17.0 g of KCl in 213 mL of KCl solution?

Anarel [89]

Answer:

1.070MKCl

Explanation:

So we know that the original formula is M= n/L (n being moles of solute, L being liters of solvent)

Since we do not have liters in this problem, we would need to convert milliliters to liters

213 mL= 0.213 L

We then see that we do not have moles, but we do have a mass, being 17.0 g. we would need to convert these grams to moles, giving us 0.228 mol.

Then, you would plug in 0.228 for your n, and now you are ready to solve your original formula, plugging everything in.

M=n/L

M=0.228 mol/0.213L

M= 1.070MKCl

I know this was long, but I hope this helps (:

5 0

2 years ago

What is the closest to potassium

Greeley [361]

Metal
Alkali metal
Period 4 element

4 0

3 years ago