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slavikrds [6]
3 years ago
14

Which of the following statements is true? A. Democritus discovered the proton. B. Dalton discovered the proton. C. Thomson disc

overed the electron. D. Rutherford discovered the neutron.
Chemistry
1 answer:
iren2701 [21]3 years ago
8 0

It’s C.thomson discovered the electron

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Troyanec [42]
Did you ever find the answerr? if you did can I pls know ,Ty.
8 0
3 years ago
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What mass (in mg) does 2.63 moles of nickel have?
Romashka-Z-Leto [24]
Atomic mass Nickel ( Ni) = 58.69 a.m.u

1 mole ------------- 58.69 g
2.63 moles -------- ??

2.63 x 58.69 / 1 => 154.3547 g

1 g ------------- 1000 mg
154.3547 g ---- ??

154.3547 x 1000 / 1

=> 154,354.7 mg
6 0
2 years ago
What is an effect of gravity on objects on the surface of Earth? Check all that apply.
Flauer [41]

Answer: The correct statements are:

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Explanation:

The gravity of the earth is the force which attracts the object to the center of the earth. When the any object with mass falls under the action of the gravity attains the acceleration of 9.8 m/s^2.

  • Objects “fall” toward the center of Earth.
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9 0
2 years ago
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How many grams are in 7.32 x 1023 molecules of potassium carbonate (K2CO3)?
tiny-mole [99]

(I leave off the x10^23 because they both will divide out)    Use your per

7 0
2 years ago
A substance formed when two<br> or more chemical elements are<br> chemically bonded together?
Ronch [10]

Answer: a piece of pure matter which we can see from our naked eye is termed as a substance

Explanation:

every substance has physical and chemical properties like;

                               diamond ,water ,pure sugar ,table salt e.t.c

an element is a substance made up of same type of atoms having same atomic number[protons],and cannot be easily decomposed in to a single substance by ordinary chemical reaction example,.....

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6 0
2 years ago
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