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3 years ago

Subtractive color mixing involves mixing lights, as seen in theaters.

Chemistry

2 answers:

mr_godi [17]3 years ago

8 0

<h2>Answer : False</h2><h3>Explanation :</h3>

Subtractive color mixing involves mixing lights, as seen in theaters. This is a False statement.

Subtractive color mixing is a kind of mixing where if the colored filters are illuminated with white light from back.

The very commonly subtractive primary colors are cyan, magenta and yellow, and if one tries to overlap all three colors in effectively equal mixture, then all the light is subtracted giving black.

8090 [49]3 years ago

6 0

The answer is false. I just took the test.

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How many grams of sodium chloride must dissolve in 750.0 g of water to make a 0.50 molal solution?

AleksandrR [38]

Molality is defined as the number of moles of solute in 1 kg of solvent.
molality of solution to be prepared is 0.50 molal
this means that in 1000 g of water there should be 0.50 mol of NaCl
if 1000 g of water should contain - 0.50 mol
then 750.0 g of water requires - 0.50 mol/kg x 0.750 kg = 0.375 mol
mass of NaCl in 0.375 mol - 58.5 g/mol x 0.375 mol = 21.9 g
therefore a mass of 21.9 g of NaCl is required

7 0

3 years ago

1. Every summer Cheyanne drives to California. It is 3600 km to get there. If she spends 32 hours driving, what is her speed?

qaws [65]

Answer:

Their speed = 69.9043 miles per hour

Their speed = 112.5 kilometers per hour

Explanation:

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3 years ago

What is the ideo of diffusion

d1i1m1o1n [39]

Answer:

Diffusion of Innovation (DOI) Theory, developed by E.M. Rogers in 1962, is one of the oldest social science theories. It originated in communication to explain how, over time, an idea or product gains momentum and diffuses (or spreads) through a specific population or social system

Explanation:

steps of divusion if you need it are

Knowledge. The first step in the diffusion of innovation is knowledge. ...

Persuasion. Persuasion is the point at which the prospective adopter is open to the idea of purchase. ...

Decision. Eventually the would-be adopter must make a decision. ...

Implementation. ...

Confirmation.

Happy to help;)!

7 0

3 years ago

Complete the statement about the environment and its components.

borishaifa [10]

the environment is Healthy

3 0

3 years ago

A chemist must prepare 200.0 mL of hydrochloric acid solution with a pH of 0.60 at 25 °C. He will do this in three steps: • Fill

Likurg_2 [28]

Answer:

In the second step, the chemist must measure 8.3 ml of concentrated acid

Explanation:

The concentration of the final solution can be obtained using the pH value:

pH = -log[H] = 0.60

[H] = 10^(-0.60) = 0.25 M

Then, the final concentration of HCl will be 0.25 M because HCl is a monoprotic acid, which means that HCl only has one hydrolyzable proton. Therefore: [HCl] = [H].

The number of moles of HCl in the final solution will be equal to the number of moles present in the volume taken from the stock solution:

n° of moles in the volume taken from stock solution = n° moles in the final solution.

The number of moles can be calculated as follows:

number of moles = concentration * volume

Then:

Ci * Vi = Cf * Vf

where

Ci = concentration of the stock solution

Vi = volume taken from the stock solution

Cf = concentration of the final solution

Vf = volume of the final solution

Replacing with the data, we can obtain Vi:

6.0 M * Vi = 0.25 M * 200.0 ml

5 0

3 years ago