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ankoles [38]
3 years ago
14

Compare the properties of the following: α particles, cathode rays, protons, neutrons, and electrons.

Chemistry
1 answer:
soldi70 [24.7K]3 years ago
5 0

Properties of the following are:

Alpha particle - positively charged particle (+) that consists of two electrons and two neutrons.

Cathode rays - it is the stream of electrons (negatively charged) found in vacuum.

Protons - are particles that carry positive charge and is present inside the nucleus of an atom.

Electrons - are particles that carry negative charge and is present in the orbits of the atom.

Neutrons - electrically neutral particle (0 charge) present inside the nucleus of an atom. However, it has its own mass.

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The activiation energy required for a chemical reaction can be decreased by.
balandron [24]

Answer:

C

Explanation:

C) adding a catalyst to the reaction.

4 0
3 years ago
What is the energy of light with a wavelength of 589 nm? (The speed of light in a vacuum is 3.00 x 10^8 m/s, and Planck's consta
VARVARA [1.3K]

Answer:

B

Explanation:

\frac{6.626\cdot10^{-34}\cdot\left(3\cdot10^{8}\right)}{589}= 3.37 x 10^-28 J

7 0
3 years ago
Sheena wants to measure the volume of a ball that is 24 cm across. How should she set up her equation?
Ksivusya [100]

Answer:

The volume of a ball that is 24 cm across is :

d). v = four-thirds pi 12 cubed

Explanation :

Ball is a sphere and volume of sphere is given by :

\frac{4}{3}\Pi r^{3}

r = radius of ball

r =\frac{24}{2}

r = 12 cm

Volume is :

\frac{4}{3}\Pi \times 12^{3}

8 0
4 years ago
Read 2 more answers
If f(x)=x^2 and g(x)=2x+3, what is f(g(x))
IgorC [24]

Answer:

\huge\boxed{f(g(x)) = 4x^2 + 12x + 9}

Explanation:

In its raw form, function notation essentially represents an equation with only one unknown variable, expressed in terms of another.  Thus, f(x) = x² + 7x can be expressed as

g(x) = 2x + 3

f(g(x)) = (2x + 3)²

f(g(x)) = 4x² + 12x + 9

Hope it helps :) and let me know if you want me to elaborate.

6 0
3 years ago
Read 2 more answers
Convert 16 inches to feet
MrRa [10]

There is 12 inches in 1 foot.

Divide 16 with 12 to get feet

16/12 = ~1.33 (rounded)

1.33 is your answer

hope this helps

5 0
4 years ago
Read 2 more answers
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