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arlik [135]
2 years ago
6

What information does the formula for an ionic compound provide?

Chemistry
1 answer:
Korolek [52]2 years ago
7 0

It provides us with the knowledge of what the cation and anion of the compound are, as well as how many atoms of each are present.

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Calculate the maximum wavelength of light that will cause the photoelectric
Drupady [299]

Answer:

Explanation:

Work function of potassium = 2.29 eV = 3.67 X 10⁻¹⁹ J

So the minimum energy of photon must be equal to 3.67 X 10⁻¹⁹ J .

energy of photon of wavelength λ = hc / λ

where h = 6.67  x 10⁻³⁴

c = 3 x 10⁸

Putting the values in the equation above

6.67  x 10⁻³⁴  x  3 x 10⁸ / λ =  3.67 X 10⁻¹⁹

λ  = 6.67  x 10⁻³⁴  x  3 x 10⁸ /  3.67 X 10⁻¹⁹

= 5.452 x 10⁻⁷

= 5452 x 10⁻¹⁰ m

= 5452 A .

6 0
3 years ago
A gas of 3.4 moles occupies a volume of 0.046 L at 298 K. What is the pressure in kPa?
Phantasy [73]

Answer : The correct option is, 2.1\times 10^5kPa

Explanation :

To calculate the pressure of gas we are using ideal gas equation as:

PV=nRT

where,

P = pressure of gas = ?

V = volume of gas = 0.046 L

n = number of moles of gas = 3.4

R = gas constant = 8.314 L.kPa/mol.K

T = temperature of gas = 298 K

Now put all the given values in the above formula, we get:

P\times (0.046L)=(3.4mol)\times (8.314L.kPa/mol.K)\times (298K)

P=1.83\times 10^5kPa\approx 2.1\times 10^5kPa

Therefore, the pressure of gas is, 2.1\times 10^5kPa

3 0
3 years ago
A gas is collected at a temperature of 25.2 degrees celcius and a pressure of 0.967 atm. What pressure would the gas have at a t
Nimfa-mama [501]

Answer:

1.707599191 atm

Explanation:

44.5 divided by 25.2 = 1.765873 (i used calculator to double check)

1.765873 x 0.967 = 1.707599191 (used calculator)

5 0
2 years ago
Which of the following characteristics is NOT associated with El Niño?
Evgesh-ka [11]

Answer:

I think it's Cooler waters rising to the surface of the ocean.

Explanation:

I've heard of all the others happening. :)

3 0
2 years ago
Read 2 more answers
Explain how plantesimals differ from protoplanets
MAXImum [283]

Answer:

Planetesimals are solid objects thought to exist in protoplanetary disks and in

A protoplanet is a large planetary embryo that originated within a protoplanetary disc and has undergone internal melting to produce a differentiated interior.

5 0
3 years ago
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