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Ipatiy [6.2K]
3 years ago
10

What mass of sugar should be dissolve in 30g of water to ger 25 percentage weight by weight solution

Chemistry
1 answer:
dalvyx [7]3 years ago
8 0

Answer:ko;;nok

Explanation:

;ok';

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Check the statements that are accurate. Check all of the boxes that apply. Before Thomson’s experiments, scientists accepted tha
elixir [45]
Answer 1) It is incorrect.

Explanation : For the statement; 

Thomson did experiments with cathode ray tubes  to show that all atoms contain tiny negatively charged subatomic particles called as electrons<span>.

So the statement should be like this:
AFTER the </span><span>Thomson’s experiments, scientists accepted that the atom was made up of smaller particles.

Answer 2) This is correct.

Explanation : Rutherford was the scientist who discovered that atoms has volume is because of the empty spaces inside it. He did the gold foil experiments to prove this and he was successful in doing this by concluding that tiny dense empty places are occupied by positively charged nucleus.

Answer 3) This is Correct.

Explanation : After Thomson and Rutherford, Millikan also performed an experiment to prove that an atom contains a small positively charged nucleus which is usually surrounded by negatively charged electrons by his oil drop experiment.</span>
5 0
4 years ago
Which statements describe molecules? Check all that apply.
maria [59]

Answer:

Molecules are made of two or more atoms

Molecules range in size

Molecules are made of atoms of the same element or different elements.

5 0
3 years ago
Read 2 more answers
1)Mg + Br2 2)AI2O3 + HCI 3)Cu +H2SO4 4) BaCI2 + H2SO4
Sindrei [870]

1) MgBr2

2) AICI3 + H20

3) CuSO4 + SO2 + 2H2O

4) BaSO4 + HCI

4 0
3 years ago
An engineering company needs to solve a design problem. It is designing a high-speed train to transport passengers between Bosto
gregori [183]

Answer:

d

Explanation:

5 0
3 years ago
During a sunset, molecules interact with light and scatter all but which colors?
sergey [27]

Answer:

B.red

Explanation:

Electromagnetic spectrum is range of the frequencies and their respective wavelengths of the various type of the electromagnetic radiation.

In order of the decreasing wavelength the spectrum are:  

Red , Orange, Yellow, Green, Blue, Indigo, Violet

Increasing wavelength is the opposite trend. Thus, The longest visible wavelength is red and the shortest is violet.

Also, Violet light gets scattered the most while the red light gets scattered the least.

During the time of the sunset, the Earth is rotating away from the Sun. Thus, most of the light colors scatters in the ways and the color that least scatter which is red reaches the Earth.

That's why, at the time of sunrise and sunset, the sky looks red.

7 0
3 years ago
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