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Juliette [100K]
3 years ago
8

PLEASE HELP 50 POINTS!!

Chemistry
1 answer:
Arturiano [62]3 years ago
8 0

Answer:

D. use the data to evaluate the effectiveness of the prototype

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Calculate the pOH of this solution. pH = 1.90 pOH =
ladessa [460]

Answer:

<h2>12.1 </h2>

Explanation:

Since the pH has been given, the pOH can be found by using the formula

pH + pOH = 14

pOH = 14 - pH

From the question we have

pOH = 14 - 1.9

We have the final answer as

<h3>12.1</h3>

Hope this helps you

8 0
3 years ago
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How many hydrogen bonds can CH2O make to water
VladimirAG [237]
Hydrogen bonds are not like covalent bonds. They are nowhere near as strong and you can't think of them in terms of a definite number like a valence. Polar molecules interact with each other and hydrogen bonds are an example of this where the interaction is especially strong. In your example you could represent it like this: 

<span>H2C=O---------H-OH </span>

<span>But you should remember that the H2O molecule will be exchanging constantly with others in the solvation shell of the formaldehyde molecule and these in turn will be exchanging with other H2O molecules in the bulk solution. </span>

<span>Formaldehyde in aqueous solution is in equilibrium with its hydrate. </span>

<span>H2C=O + H2O <-----------------> H2C(OH)2</span>
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3 years ago
⚠️HELP DUE IN 10 MINS WILL GIVE BRAINLIEST!!! THANKS⚠️
LenKa [72]

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Explanation:

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The density of copper is 8.96g/mL. The mass of 7.00 of copper is
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7.00 what? Moles? mL?
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What is the relationship between the volume of a gas and its pressure?
erastova [34]

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inversely proportional

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