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BartSMP [9]
3 years ago
5

When delivering a presentation, pay attention to _____ and _____.

Chemistry
2 answers:
dexar [7]3 years ago
7 0

Answer:

believability and confidence

Explanation:

guapka [62]3 years ago
4 0

Answer:

I think the last one

Explanation:

The reason for that is because when you go up to present something you always want to try to hav believability and confidence.

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What is the mass of water that results from combining 2.0 g of hydrogen with 16.0 g of oxygen?
astraxan [27]
The formula for water is H2O so there would have to be two Hyrdogens and one oxygen. Therefore it would be 4g of Hydrogen and 16g of Oxygen leaving you with 20g.
The answer is D.

Hope this helps :) ~
8 0
3 years ago
Which describes how technology has changed society?
Anton [14]

Answer:

B. People live longer than they used to

Explanation:

None of the other answers are correct.

7 0
3 years ago
In an experiment, marble chips reacted with dilute hydrochloric acid and carbon dioxide gas was given
laiz [17]

Answer:

no

Explanation:

Small marble chips reacts faster

7 0
2 years ago
If a liquid has a Ph of 3 what is it​
kvasek [131]
Lower than 7 is acid greater than 7 is a base
6 0
3 years ago
The osmotic pressure of a solution formed by dissolving 75.0 mg of aspirin (c9h8o4) in 0.250 l of water at 25 °c is ________ atm
Igoryamba

Answer is: the osmotic pressure of aqueous solution of aspirin is 0.0407 atm.

m(C₉H₈O₄) = 75 mg ÷ 1000 mg/g = 0.075 g.

n(C₉H₈O₄) = 0.075 g ÷ 180.16 g/mol.

n(C₉H₈O₄) = 0.000416 mol.

c(C₉H₈O₄) = 0.000416 mol ÷ 0.250 L.

c(C₉H₈O₄) = 0.00167 M; concentration of solution.

T(C₉H₈O₄) = 25°C = 298.15 K; temperature in Kelvins.

R = 0.08206 L•atm/mol•K; universal gas constant.

π = c(C₉H₈O₄) • T(C₉H₈O₄) • R.

π = 0.00167 mol/L • 298.15 K • 0.08206 L•atm/mol•K.

π = 0.0407 atm.


3 0
3 years ago
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