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alekssr [168]
3 years ago
15

What is the frequency of light whose wavelength is 6.33 x 10-7m?

Chemistry
1 answer:
Serhud [2]3 years ago
5 0

Answer:

the frequency of light is

4.74 \times {10}^{14}

Explanation:

from v = λf

speed of light in air, v = 3.0*10^8ms^-1

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ioda

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7 0
4 years ago
How much heat is required to raise the temperature of 475 grams of solid aluminum from room temperature (295k) to liquid aluminu
Rzqust [24]
295k=22°c
1050k=777°

total heat needed=
(0.475)(777-22)(specific heat capacity of aluminium)+(0.475)(specific latent heat of aluminium)
7 0
4 years ago
Which statements are true of the reaction below? 2Na(s) + Cl2(g) ---> 2NaCl(s)
blsea [12.9K]

Answer:

A and B are both true

Explanation:

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4 0
3 years ago
How many moles in one gram of Calcium ??
kirill [66]

Answer:

0.0249 moles in 1 g of Ca

Explanation:

Let's think in the molar mass of Ca.

Ca = 40.08 g/mol

So 1 mol weighs 40.08 grams, or in the opposite 40.08 grams is the weigh of 1 mol

The rule of three will be:

40.08 g are contained in 1 mol

1 g may be contained in (1 . 1) / 40.08 = 0.0249 moles

8 0
3 years ago
How would you make a 30% ethanol solution?
Elena L [17]

Answer:

You need 30 ml of alcohol and 70 ml of water.

Explanation:

You want to end up with 100ml of liquid, 30% of which is alcohol. 30% of 100ml is 30/100 100 = 30 ml.

7 0
3 years ago
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