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Bogdan [553]
3 years ago
9

The questions in bold are questions you shouldnt answer, answer the rest.

Chemistry
2 answers:
velikii [3]3 years ago
8 0
A variable is not consistent or having a fixed pattern; liable to change.
elixir [45]3 years ago
7 0

I can answer one of those...

In solids, the particles are just barely vibrating, and have their own shape. In liquids, the particles are moving more, and they are sliding around and moving places. Their shape can change based on the container they’re in, but the volume stays the same. The particles in a gas are moving very fast, and are far away from each other. A gas can change its volume and shape. If you want to do plasma, that’s when the particles are moving so fast that they can create light. I was going to do the variable thing but it would sound weird and very wordy if I tried to explain it.

Written by a 6th grader who is currently learning about states of matter :P

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Which statement describes characteristics of earthquakes occurring along divergent plate boundaries?
IgorC [24]
B
. They are large and occur at shallow depths near the where the plates diverge.
7 0
3 years ago
Calculate the mass (in grams) of 8.56 moles of sulfur.
oksano4ka [1.4K]

Answer:

275g

Explanation:

Depending on the molar mass you are given, you can use that to solve this.

(I'm going based on my science class' molar mass of sulphur being 32.07g/mol)

Starting off, the formula for finding moles is

n=m/M (moles = mass / molar mass)

We can manipulate this equation to solve for mass.

m=Mn

now fill in what we now.

m = 32.07*8.56

mass = 274.5192

Now round for significant digits (if you are needed to do)

mass = 275g

5 0
3 years ago
Is metal rusting a chemical reaction? Yes or no
mars1129 [50]

Answer: Yes it is. Rust would be considered a chemical reaction because it changes the chemical makeup of the metal.

Explanation:

5 0
3 years ago
Read 2 more answers
At what temperature, would the volume of a gas
PtichkaEL [24]

Explanation:

P1V1 = nRT1

P2V2 = nRT2

Divide one by the other:

P1V1/P2V2 = nRT1/nRT2

From which:

P1V1/P2V2 = T1/T2

(Or P1V1 = P2V2 under isothermal conditions)

Inverting and isolating T2 (final temp)

(P2V2/P1V1)T1 = T2 (Temp in K).

Now P1/P2 = 1

V1/V2 = 1/2

T1 = 273 K, the initial temp.

Therefore, inserting these values into above:

2 x 273 K = T2 = 546 K, or 273 C.

Thus, increasing the temperature to 273 C from 0C doubles its volume, assuming ideal gas behaviour. This result could have been inferred from the fact that the the volume vs temperature line above the boiling temperature of the gas would theoretically have passed through the origin (0 K) which means that a doubling of temperature at any temperature above the bp of the gas, doubles the volume.

From the ideal gas equation:

V = nRT/P or at constant pressure:

V = kT where the constant k = nR/P. Therefore, theoretically, at 0 K the volume is zero. Of course, in practice that would not happen since a very small percentage of the volume would be taken up by the solidified gas.

8 0
3 years ago
When a checmical eeaction occurs,______________
irinina [24]
<span>when two or more molecules interact and the molecules change.</span>
4 0
3 years ago
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