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const2013 [10]
3 years ago
13

Anna studies the color of her bedroom wall using different lights. In sunlight, she sees that the wall is white. Anna darkens th

e room and shines a beam of light that includes all the wavelengths of visible light onto the wall. In this light, what’s the wall color that Anna sees?
no color

all seven colors of visible light

red

white

black
Chemistry
2 answers:
erica [24]3 years ago
6 0

Answer:

white

Explanation:

Marizza181 [45]3 years ago
4 0

Answer: C white

Explanation:

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An osmolarity of saline solution is 308 mosmol/L.

m(NaCl) = 9 g; the mass of sodium chloride

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Osmotic concentration (osmolarity) is a measure of how many osmoles of particles of solute it contains per liter.

The osmolarity = n(NaCl) ÷ V(solution)  × 2

The osmolarity = 0.154 mol ÷ 1 L × 2

The osmolarity = 0.154 mol/L × 1000 mmol/m × 2

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1 year ago
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iVinArrow [24]

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Weight percentage of nitrogen can be calculated using the following rule:
weight percentage of nitrogen = (weight of nitrogen / weight of urea) x 100

From the periodic table:
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Substitute with the masses in the equation to get the percentage:
weight percentage of nitrogen = (28/60) x 100 = 46.667%
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