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iogann1982 [59]
3 years ago
12

Substance Specific Heat Capacity J/Kgo C Ammonia 4700 Ethanol 2440 Gasoline 2220 Water 4186 A liquid has a mass of 18.39g. If 65

5J of heat are required to change the temperature from 32.8oC to 18.2oC, what is the identity of the liquid? A) ammonia B) ethanol C) gasoline D) water
Chemistry
1 answer:
FinnZ [79.3K]3 years ago
6 0

Answer:

B) ethanol

Explanation:

I got a 100% on my test plus its the answer on usatestprep

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The acetic acid/acetate buffer system is a common buffer used in the laboratory. Write the equilibrium equation for the acetic a
hichkok12 [17]

Answer:

CH₃CO₂H + H₂O ⇄ CH₃CO₂⁻ + H₃O⁺

Explanation:

A buffer is defined as the mixture of a weak acid and its conjugate base or vice versa.

For the acetic acid buffer, CH₃CO₂H is the weak acid and its conjugate base is the ion without H⁺, that is CH₃CO₂⁻. The equilibrium equation in water knowing this is:

<h3>CH₃CO₂H + H₂O ⇄ CH₃CO₂⁻ + H₃O⁺</h3>

<em>In the equilibrium, the acid is dissociated in the conjugate base and the hydronium ion.</em>

8 0
3 years ago
4. If the DNA nitrogen bases were TACCGGAT, how would the other half of
Illusion [34]

Answer:

<u>ATGGCCTA</u>

Explanation:

For this we have to keep in mind that we have a <u>specific relationship between the nitrogen bases</u>:

-) <u>When we have a T (thymine) we will have a bond with A (adenine) and viceversa</u>.

-) <u>When we have C (Cytosine) we will have a bond with G (Guanine) and viceversa</u>.

Therefore if we have: TACCGGAT. We have to put the corresponding nitrogen base, so:

TACCGGAT

<u>ATGGCCTA</u>

<u></u>

I hope it helps!

3 0
3 years ago
List three differences between the earth 240 million years ago and the present earth.
raketka [301]
Dinosaurs, cavemen, sabertooth tiger
4 0
3 years ago
How can you determine the number of electrons in an atom? a. valence number c. chemical number b. atomic number d. ionic number?
Art [367]
You can determine the number of electrons by valence electrons
8 0
3 years ago
Read 2 more answers
What is the volume of 90.0 g of ether if the density of the ether is 0.70 g/mL?
natali 33 [55]
Mass = 90.0 g

Density = 0.70 g/mL

Volume = in mL ?

D = m / V

0.70 = 90.0 / V

V = 90.0 / 0.70

V = 128.57 mL
5 0
3 years ago
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