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Artyom0805 [142]
3 years ago
11

The nucleus of an atom is

Chemistry
2 answers:
Scorpion4ik [409]3 years ago
7 0

Answer:

The nucleus is composed of protons and neutrons. A nucleus usually refers to the central core of something.

Explanation:

Brilliant_brown [7]3 years ago
7 0

Answer:

a. The central core and is composed of protons and neutrons.  

Explanation:

A nucleus of anything is a central core. The nucleus of an atom is composed of protons and neutrons.

b. is wrong. Except for H, the number of neutrons is always equal to or greater than the number of protons.

c. and d. are wrong. The nucleus is positively charged.

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3S8 + 8 OH- + 8 S3 + 4 HOOH
NemiM [27]

Answer:

Second order

Explanation:

We could obtain the order of reaction by looking at the table very closely.

Now notice that in experiment 1 and 2, the concentration of [OH^-] was held constant while the concentration of [S8] was varied.  So we have;

a situation in which the rate of reaction was tripled;

0.3/0.1 = 2.10/0.699

3^1 = 3^1

Therefore the order of reaction with respect to  [S8] is 1.

For [OH^-], we have to look at experiment 2 and 3 where the concentration of [S8] was held constant;

x/0.01 = 4.19/2.10

x/0.01 = 2

x = 2 * 0.01

x = 0.02

So we have;

0.02/0.01 = 2^1

2^1 = 2^1

The order of reaction with respect to  [OH^-] = 1

So we have the overall rate law as;

Rate = k[S8]^1  [OH^-] ^1

Overall order of reaction = 1 + 1 = 2

Therefore the reaction is second order.

4 0
3 years ago
Answer questions using the two magnetic field models (will mark brainliest)
JulijaS [17]

Answer:

2. A

3.B

4.B

Hope this helps,Pls mark as Brainliest!!

4 0
3 years ago
Jupiters atmosphere is mostly made of ___
erastovalidia [21]
Jupiter's atmosphere is composed predominantly of hydrogen and helium, but if you have to select any one option then we can look at the percentage of existence of these elements that would be
<span>90 percent hydrogen.
remaining 10 percent is helium 
so choose Hydrogen.</span>
3 0
3 years ago
Really need help with this<br> Will give brainliest to whoever has the correct answer
lukranit [14]

Answer:

a=0.4\ m/s^2

Explanation:

1. Given that,

Initial speed of a bicycle, u = 4 m/s

The final speed of a bicycle, v = 6 m/s

Time, t = 6 s

We need to find the acceleration of the bicycle. We know that, acceleration is    equal to the change in speed divided by time taken. So,

a=\dfrac{v-u}{t}\\\\a=\dfrac{6-4}{5}\\\\a=0.4\ m/s^2

So, the acceleration of the bicycle is equal to 0.4\ m/s^2.

5 0
3 years ago
Which type of electromagnetic wave has the most energy?
Leto [7]

Answer:

Gamma rays

Explanation:

6 0
2 years ago
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