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Ludmilka [50]
3 years ago
11

Is putting food coloring in water a chemical change?

Chemistry
1 answer:
nata0808 [166]3 years ago
5 0
Yes, Yes it is. Food coloring has chemicals in it
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ICI(g) + Cl₂(g) → ICl3(s). The AG(f) of ICI(g) is -5.5 kJ/mol and the
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Which of the following is the most reliable prediction about the future of some nonrenewable energy resources?
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A sample of ideal gas has a volume of 0.500-L at 25.0o C and 1.20 atm pressure. What is the volume at 75.0o C and 3.60 atm?
sergeinik [125]

Answer:

.500

Explanation:

Use the ideal gas law equation: PV = nRT

Plug in the initial values given:

P = 1.2 atm

V = .500 L

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T = 25.0 C

(1.2)(.5) = n(8.314)(25)

solving for n we get .00289

Now use the same equation with the new values solving for V

(3.6)V = (.00289)(8.314)(75.0)

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3 0
3 years ago
chemistry student needs of thiophene for an experiment. She has available of a w/w solution of thiophene in carbon tetrachloride
kumpel [21]

The question is incomplete, here is the complete question:

A chemistry student needs 75 g of thiophene foran experiment. He has available 0.50 kg of a 29.3% w/w solution of thiophene in carbon tetrachloride.

Calculate the mass of solution the student should use. If there's not enough solution, press the "No solution" button.

<u>Answer:</u> The mass of solution the student should use is 255.97 grams

<u>Explanation:</u>

We are given:

Mass of thiophene needed = 75 gram

29.3 % w/w thiophene solution

This means that 29.3 grams of thiophene is present in 100 grams of solution

Applying unitary method:

If 29.3 grams of thiophene is present in 100 grams of solution

So, 75 grams of thiophene will be present in = \frac{100}{29.3}\times 75=255.97g

Given amount of solution = 0.50 kg = 500 grams   (Conversion factor:  1 kg = 1000 g)

Hence, the mass of solution the student should use is 255.97 grams

4 0
3 years ago
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