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Anna35 [415]
3 years ago
9

Was john dalton a good scientist? why?

Chemistry
1 answer:
Zina [86]3 years ago
3 0

he is a good scientist because he postulated that chemical reactions resulted in the rearrangement of the reacting atoms

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Source: Exam as well
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4 0
3 years ago
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Which would least strongly attract electrons from other atoms in a compound?
sergey [27]
The concept we are looking for here is electronegativity. This concept is a measure of how strong an atom or element can attract a pair, that is bonding, of electrons to itself. 

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3 years ago
H-1
bonufazy [111]
Answer = B = Neutrons and Mass Number

Isotopes 
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Atomic mass is basically the number of protons and neutrons present in an atom.

Atomic number is the number of protons present in an atom.

So, in isotopes the number of protons are same but the number of neutrons vary due to which atomic masses also vary.
In given three isotopes, all have same number of protons but different number of neutrons.
i.e.
H-1 = 1 P + 0 N = 1 u (Proton)
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H-3 = 1 P + 2 N = 3 u (Tritium)

Hence, it is clear that the number after H shows a change in number of neutrons and mass number.

7 0
3 years ago
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Which of the four substances listed will dissolve in water and why?
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Answer:

Sugar, sodium chloride, and hydrophilic proteins are all substances that dissolve in water. Oils, fats, and certain organic solvents do not dissolve in water because they are hydrophobic.

And, water is called the "universal solvent" because it dissolves more substances than any other liquid. ... Water molecules have a polar arrangement of the oxygen and hydrogen atoms—one side (hydrogen) has a positive electrical charge and the other side (oxygen) had a negative charge.

I don't see any options so there i hope it helps .

7 0
3 years ago
How can Newton's Third Law of Motion be used to explain why it is difficult to walk on a slippery surface, such as ice?
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E ground pushes you forward. But that interaction is friction. Reduce friction and it doesn't matter how strong your legs are, the surface is incapable of pushing you accordingly. The coefficient of static friction is very low so it is easy to slide your foot rather than push.
6 0
2 years ago
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