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mojhsa [17]
3 years ago
12

In 20 words or fewer, could you use a water wave to move a dropped

Chemistry
1 answer:
Lorico [155]3 years ago
8 0

Answer:

well, I would say yes it would be able to move a dropped paddle closer to your cousins canoe so that it is reachable but then there are situations where the water might not be on ur side so it floats the oppisite way, its kind of unpredictable but here is my answer

Explanation:

I hope this helps you, if not sorry.

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if you are told to get 100 mL of stock solution to use to prepare smaller size sample for an experiment, which piece of glasswar
fgiga [73]

Answer:

A beaker  

Step-by-step explanation:

Specifically, I would use a 250 mL graduated beaker.

A beaker is appropriate to measure 100 mL of stock solution, because it's easy to pour into itscwide mouth from a large stock bottle.

You don't need precisely 100 mL solution.

If the beaker is graduated, you can easily measure 100 mL of the stock solution.

Even if it isn't graduated, 100 mL is just under half the volume of the beaker, and that should be good enough for your purposes (you will be using more precise measuring tools during the experiment).

6 0
3 years ago
What is the Ka of a weak acid (HA) if the initial concentration of weak acid is 4.5 x 10-4 M and the pH is 6.87? (pick one)
rewona [7]

Answer:

Ka = 4.04 \times 10^{-11}

Explanation:

Initial concentration of weak acid = 4.5 \times 10^{-4}\ M

pH = 6.87

pH = -log[H^+]

[H^+]=10^{-pH}

[H^+]=10^{-6.87}=1.35 \times 10^{-7}\ M

HA dissociated as:

HA \leftrightharpoons H^+ + A^{-}

(0.00045 - x)    x     x

[HA] at equilibrium = (0.00045 - x) M

x = 1.35 \times 10^{-7}\ M

Ka = \frac{[H^+][A^{-}]}{[HA]}

Ka = \frac{(1.35 \times 10^{-7})^2}{0.00045 - 0.000000135}

0.000000135 <<< 0.00045

Therefore, Ka = \frac{(1.35 \times 10^{-7})^2}{0.00045 } = 4.04 \times 10^{-11}

5 0
3 years ago
which of the following statements correctly describes the relative masses of the particles in atoms ​
zysi [14]

Answer:

protons and neutrons

Explanation:

protons and neutrons is equal to mass number

6 0
3 years ago
Which scenario would result in the fastest rate of dissolution?
soldi70 [24.7K]
C) powdered sugar in hot water because the sugar is already broken so  it would be  more faster than sugar cube  in hot  water
4 0
3 years ago
Read 2 more answers
100 points free and brainliest, cuz i dont care anymore
Pachacha [2.7K]

Answer:

Thanks for the points.

3 0
3 years ago
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