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Bingel [31]
2 years ago
11

3. What kinds of space and matter can light travel through?

Chemistry
2 answers:
zloy xaker [14]2 years ago
7 0

Answer:

electromagnetic waves

Explanation:

light travels in the waves called electromagnetic waves.

they also use radio waves, infared waves visble light ect

const2013 [10]2 years ago
6 0

Answer:

light travels as a wave. but unlike sound waves or water waves, it doesn't need any matter or material to carry it's energy along

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lyudmila [28]
It should be 3 feet... I did something like this one day in school but I’m trying to remember
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3 years ago
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Which of the following would be SI unit to use in measuring the temperature of hot liquid
Vinil7 [7]

The unit is the Kelvin, but most of the time 273 is subtracted from the Kelvin temperature and the new number is called "degrees Celsius".

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3 years ago
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Urea, (NH2)2CO, is a product of metabolism of proteins. An aqueous solution is 37.2% urea by mass and has a density of 1.032 g/m
Feliz [49]

Answer:

The molarity of urea in this solution is 6.39 M.

Explanation:

Molarity (M) is <em>the number of moles of solute in 1 L of solution</em>;  that is

molarity = moles of solute ÷ liters of solution

To calculate the molality, we need to know the number of moles of urea and the volume of solution in liters. We assume 100 grams of solution.

Our first step is to calculate the moles of urea in 100 grams of the solution,

using the molar mass a conversion factor. The total moles of 100g of a 37.2 percent by mass solution is

60.06 g/mol ÷ 37.2 g = 0.619 mol

Now we need to calculate the volume of 100 grams of solution, and we use density as a conversion factor.

1.032 g/mL ÷ 100 g = 96.9 mL

This solution contains 0.619 moles of urea in 96.9 mL of solution. To express it in molarity, we need to calculate the moles present in 1000 mL (1 L) of the solution.

0.619 mol/96.9 mL × 1000 mL= 6.39 M

Therefore, the molarity of the solution is 6.39 M.

4 0
3 years ago
Element A has 15 protons. Determine the number of neutrons in its isotope with mass number 33.
mario62 [17]
33 - 15 = 18
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3 years ago
How does melting order relate to melting point?
KatRina [158]

Answer:

I think A.

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5 0
2 years ago
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