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lora16 [44]
3 years ago
7

Which one of these is the accepted name for the compound n2o5?

Chemistry
1 answer:
Leya [2.2K]3 years ago
6 0
C is the correct answer. For nonmetal-nonmetal compounds, use the Greek prefixes

Mono - 1
Di - 2
Tri - 3
Tetra - 4
Penta - 5
Hexa - 6
Hepta - 7

And so on...

The reason D is not right is because a and o cannot be next to each other in between prefix and element.

Hope this helps!

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A 25.0 mL sample of an acetic acid solution is titrated with a 0.175 M NaOH solution. The equivalence point is reached when 37.5
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This is all i know
First of all, let's write the equation of the reaction.
CH₃COOH + NaOH ⇒ CH₃COONa + H₂O
The formula to be used here is CaVa/CbVb = na/nb
where Ca is the concentration of the acid (?)
Cb is the concentration of the base (0.175M)
Va is the volume of the acid (25 mL)
Vb is the volume of the base (37.5 mL)
na is the number of moles of acid (1)
nb is the number of moles of base (1)
Ca × 25/0.175 × 37.5 = 1/1
Ca = 0.175 × 37.5 × 1 /25 ×1
Ca = 0.263 M
The concentration of the acid in the sample was 0.263 M

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The DH for the solution process when solid sodium hydroxide dissolves in water is -44.4 kJ/mol. When a 13.9-g sample of NaOH dis
salantis [7]

Answer:

The temperature increases from 23.0 C to 37.0 °C

Explanation:

<u>Step 1:</u> Data given

DH = -44.4 kJ/mol

mass NaOH = 13.9 grams

mass of water = 250.0 grams

Initial temperature = 23°C = 295 K

Final temperature = TO BE DETERMINED

Specific heat = 4.18 J/g*K

<u>Step 2: </u>Calculate change in temperature

13.9 grams/ 40 g/mol * 44.4 kJ/mol = 15429 J

15429 J = (massNaOH + mass water) * 4.18 * ΔT

15429 = 263.9 *4.18 * ΔT

ΔT = 14°C

<u>Step 3:</u> Calculate final temperature

ΔT= 14°C = T2 - 23°C

T2 = 23 +14 = 37 °C

The temperature increases from 23.0 C to 37.0 °C

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3 years ago
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