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Debora [2.8K]
3 years ago
15

Which of the following is true about all electromagnetic waves in a vacuum?

Chemistry
2 answers:
prohojiy [21]3 years ago
5 0
B.) They all travel at the same speed
gayaneshka [121]3 years ago
5 0

Its B! :D

All electromagnetic waves in a vacuum travel the same speed.

Ty!~Ceil

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4 years ago
Describe how you would prepare approximately 2 l of 0.050 0 m boric acid, b(oh)3.
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The given concentration of boric acid = 0.0500 M

Required volume of the solution = 2 L

Molarity is the moles of solute present per liter solution. So 0.0500 M boric acid has 0.0500 mol boric acid present in 1 L solution.

Calculating the moles of 0.0500 M boric acid present in 2 L solution:

2 L * \frac{0.0500 mol B(OH)_{3} }{1 L} = 0.100 mol B(OH)_{3}

Converting moles of boric acid to mass:

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Therefore, 6.183 g boric acid when dissolved and made up to 2 L with distilled water gives 0.0500 M solution.


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3 years ago
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