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Wittaler [7]
3 years ago
8

In which type of chemical reaction do two or more substances combine to form one substance?

Chemistry
2 answers:
Stella [2.4K]3 years ago
7 0
A) synthesis reaction
sveticcg [70]3 years ago
6 0
Your answer should be a
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In an experiment in space, one proton is held fixed and another proton is released from rest a distance of 2.00mm away. What is
myrzilka [38]
<span>F = m.a
   = mass x acceleration

So,
a = F / m
Where,
F is coulomb repulsion.
k q q / r^2
with,
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3 0
3 years ago
What is the frequency of red light with a wavelength of 645 nm?
marin [14]

Answer:

4.64E14

Explanation:

First convert 645 nm to m = 6.4500E-7m. The equation for finding v with these values is the speed of light/wavelength. so 2.998E8/6.4500E-7m.

so your v or frequency would equal 4.64E14

Fun fact you know this is visible light because the visible light range is within the E14 range.

4 0
2 years ago
Which discovery did J. J. Thomson make that improved upon Dalton's atomic theory?
erik [133]

Answer: Atoms contain tiny, negatively charged electrons

Explanation: Thomson's experiments with cathode ray tubes helped him to discover the electron (which Dalton did not know about). Dalton thought that atoms were indivisible particles, and Thomson's discovery of the electron proved the existence of subatomic particles.

3 0
3 years ago
Which is a single ringed nitrogeo base?<br><br> A)adenine<br> B)guanine<br> C)thymine<br> D)ribose
pogonyaev
A single ringed nitrogeo base is thymine (C)

3 0
3 years ago
What charge (positive, negative, neutral) does the complete atom<br> have?
Nitella [24]

Answer:

The positive charges equal the negative charges, so the atom has no overall charge; it is electrically neutral. Most of an atom's mass is in its nucleus; the mass of an electron is only 1/1836 the mass of the lightest nucleus, that of hydrogen.

...

8 0
2 years ago
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