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3 years ago

List the following types of electromagnetic radiation in order of increasing wavelength.

Chemistry

1 answer:

chubhunter [2.5K]3 years ago

3 0

Answer:

Radio, Microwave, Infared, Ultraviolet

Explanation:

look at the EM spectrum

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Answer:

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Explanation:

cold is when it get high on lattitude

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3 years ago

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3 years ago

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How many moles of N are in 0.241 g of N2O?

gtnhenbr [62]

0.00547 moles of N.

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3 years ago

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How many moles are in 272 grams of hydrogen peroxide (H2O2) ?

Strike441 [17]

Answer:

8 moles

Explanation:

When we are asked to convert from grams of a substance into moles, we have to use the substance's molar mass.

Meaning that for this problem, we'll <em>use the molar mass of hydrogen peroxide</em> (H₂O₂), as follows:

272 g ÷ 34 g/mol = 8 mol

There are 8 moles in 272 grams of hydrogen peroxide.

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2 years ago

How many moles are contained in 2.3 liters of a 1.2M solution?

elena-s [515]

Answer:

$\boxed {\boxed {\sf 2.76 \ mol}}$

Explanation:

Molarity is found by dividing the moles of solute by liters of solution.

$molarity = \frac {moles}{liters}$

We know the molarity is 1.2 M (mol\liter) and there are 2.3 liters of solution. Substitute the known values into the formula.

$1.2 \ mol/liter= \frac {x}{2.3 \ liters}$

Since we are solving for x, we must isolate the variable. It is being divided by 2.3 and the inverse of division is multiplication. Multiply both sides by 2.3 liters.

$2.3 \ liters *1.2 \ mol/liter= \frac {x}{2.3 \ liters}* 2.3 \ liters\\2.3 *1.2 \ mol= x\\2.76 \ mol =x$

In a solution with a molarity of 1.2 and 2.3 liters of solution, there are 2.76 moles.

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3 years ago