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lawyer [7]
3 years ago
7

Can light from the sun cause ink to become visible

Chemistry
1 answer:
GenaCL600 [577]3 years ago
4 0
<h3>_______。o*★*o。______</h3><h2>— Answer☕</h2>

Yes. Light from the sun can pull energy out of the ink, causing it to become visible

___________________________________

Sorry if wrong

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What would happen if the number of protons were to change in an atom
Reptile [31]

you would change one element to a diffrent element

3 0
3 years ago
Mention the reason why aquatic plants have air filled tissues.​
Pepsi [2]

Answer:

Aquatic plants have aur filled tissues to make them easy to float.....

Explanation:

It provides buoyancy

7 0
3 years ago
Calculate the number of carbon atoms in 25.0 grams of isopropyl alcohol (c3h8o)
allochka39001 [22]
First, let's determine the number of moles of carbon atoms by using molar mass. Then, using Avogadro's number, we can find the number of C atoms:
*1 mole of C3H8O= (12.0x3)+(1.0x8)+(16.0x1) = 60.0g/mol

25.0 grams C3H8O x (1 mole C3H8O/60.0 grams) = 0.417 mol

0.417mol C3H8O has (3 x 0.417 moles) C atoms = 1.251 moles C atoms

1.251 moles C atoms x(6.022x10^23 atoms/mol) = 9.42x10^23 C atoms.

The answer is in 3 significant figures, as that's what we have in the given, and we matched it with our rounding of the atomic masses from the periodic table.
You can do this all in one equation written left to right, just exclude the intermediate answers. Just easier to show it this way on the computer screen.



7 0
4 years ago
Read 2 more answers
What had its tempature changed in the "solubility" lab?
likoan [24]
B.) solvent; its temperature is raised so it can break down the solute easier
6 0
4 years ago
500 grams of an unknown substance gains 23000 J of heat as it is heated from a temperature of 250C to 1250C. Using mathematical
lutik1710 [3]

Answer:

The given substance is cast iron.

Explanation:

Given data:

Mass of substance = 50 g

Heat absorbed = 23000 J

Initial temperature = 250°C

Final temperature = 1250°C

Which metal is this = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 1250°C -  250°C

ΔT = 1000°C

23000 j = 50 g ×c ×1000 °C

23000 J = 50,000 g. °C×c

c = 23000 J /50,000 g. °C

c = 0.46 J/g.°C

The given substance is cast iron.

4 0
3 years ago
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