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Mamont248 [21]
3 years ago
11

Potassium permanganate as a symbol

Chemistry
1 answer:
Alexxx [7]3 years ago
7 0

Answer: KMnO4-

Explanation:

You're looking at one potassium plus a polyatomic ion.

So K plus MnO4, equals:

KMnO4-

It also has a molar mass of 158.04 g/mol, I don't know if you need that, but I thought it would be nice to include it.

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What is the period of a wave with a frequancy of 3 Hz and an amplitude off 0.01
lara31 [8.8K]

0.33 seconds is the period of a wave with a frequency of 3 Hz and an amplitude off 0.01 .

<u>Explanation:</u>

We have , period of a wave with a frequency of 3 Hz and an amplitude off 0.01 . We know that period of a wave is amount of time needed to complete one oscillation . In order to calculate period of wave we use frequency and the formula use is period = \frac{1}{frequency} . We are given that frequency = 3 Hz:

period = \frac{1}{frequency}

⇒ period = \frac{1}{frequency}

⇒ period = \frac{1}{3 Hz}

⇒ period = 0.33 seconds

Therefore, 0.33 seconds is the period of a wave with a frequency of 3 Hz and an amplitude off 0.01 .

4 0
3 years ago
Which of the following is an example of a compound?<br> H2O<br> Na<br> Cl<br> O
andrezito [222]
H2O
The other ones are just elements
3 0
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A lithium atom that has lost an electron comes near a chlorine atom that has gained an electron. What happens?
lina2011 [118]
C. They form an ionic compound LiCl
8 0
3 years ago
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A gas mixture contains HBr, NO2, and C2H6 at STP. If a tiny hole is made in the container, which gas will effuse fastest? NO2 C2
Anarel [89]

Answer:

C2H6

Explanation:

Let us first consider the molar Masses of each gas

HBr - 80.91 g/mol

NO2 - 46.0055 g/mol

C2H6 - 30.07 g/mol

We must remember that the greater the molar mass of a gas the lesser its velocity and average kinetic energy.

Looking at the gases listed, C2H6 have the highest average kinetic energy at this temperature since it has the lowest molecular mass. This reasoning is directly derived from Graham's law of diffusion in gases.

Hence C2H6 will effuse fastest when a hole is made in the container. It also possess the greatest average kinetic energy because it has the lowest molecular mass.

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marishachu [46]

Answer:

isk tbh,

Explanation:

5 0
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