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3 years ago

What is the formula for potassium nitrate? (3 points) a KN b K3N c KNO2 d KNO3

Chemistry

1 answer:

Mandarinka [93]3 years ago

5 0

Answer:

KNO3 (Potassium Nitrate)

Explanation:

I just know.

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The accepted density of copper is 8.96 g/mL. Calculate the percent error of a student’s measurement which resulted in a density

uranmaximum [27]

Answer:

<h3>The answer is 1.12 %</h3>

Explanation:

The percentage error of a certain measurement can be found by using the formula

$P(\%) = \frac{error}{actual \: \: number} \times 100\% \\$

From the question

actual density = 8.96 g/mL

error = 8.96 - 8.86 = 0.1

We have

$p(\%) = \frac{0.1}{8.96} \times 100 \\ = 1.1160714...$

We have the final answer as

Hope this helps you

8 0

3 years ago

When a 10 mL graduated cylinder is filled to the 10 mL mark, the mass of the water was measured to be 9.925 g. If the density of

Vlada [557]

Measured volume = 10 ml
mass = 9.925 g
density = 0.9975 g/ml
density = $\frac{mass}{volume}$
so actual volume = $\frac{mass}{density}$ = $\frac{9.925}{0.9975}$ = 9.95 mL
Percentage Error = $\frac{measured volume - Actual volume}{actual volume}$ x 100
= $\frac{10 - 9.95}{9.95}$ x 100 = 0.5 % error

5 0

4 years ago

Propose a plausible mechanism for the reaction f2 + 2clo2 → 2fclo2 given that the rate law for the reaction is rate = k[f2][clo2

shepuryov [24]

<u>The given reaction is:</u>

F2 + ClO2 → 2FClO2

Rate = k[F2][ClO2]

<u>Explanation:</u>

The possible mechanism for this reaction can be broken down into two steps with the slow step being the rate determining step

Step 1: F2 + ClO2 → FClO2 + F ----------- Slow

Step 2: F + ClO2 → FClO2 ----------- Fast

-----------------------------------------------------------

Overall: F2 + 2ClO2 → 2FClO2

Rate = k[F2][ClO2]

8 0

3 years ago

Read 2 more answers

10 points

Vesna [10]

Answer:

Explanation:

Use the molar mass of H2SO4 to get moles of H2SO4; 51.2g/98.079g=0.522

Divide 500 mL by 1000 to get L

Molarity = moles of solute/L of solution; so divide the moles by 0.5L

5 0

3 years ago

Use the diagram to answer the question.

Anna [14]

Answer:

The answer is C (same age as Q)

Explanation:

7 0

3 years ago