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andre [41]
3 years ago
10

Is a nickel coin magnetic

Chemistry
2 answers:
Romashka [77]3 years ago
8 0
Yes they are magnetic
AURORKA [14]3 years ago
7 0

Answer:

Yes

Explanation:

Because it was false because it has been the substance abuse permalink

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If 3.25 mol of Ar occupies 100. L at a particular temp and pressure, what volume does
gtnhenbr [62]

Answer:

435.38 L

Explanation:

From the question,

Applying ideal gas equation,

PV = nRT................... Equation 1

Where P = Pressure, V = Volume, n = number of moles, R = molar gas constant, T = Temperature.

Since Temperature and Pressure were constant,

V ∝ n

V/n = V'/n'.................... Equation 2

Where V and V'  = the initial and final Volume of Ar respectively, n and n'  = the initial and final moles of Ar respectively

make V' the subject of the equation

V' = Vn'/n............... Equation 3

Given: V = 100 L, n = 3.25 mol, n' = 14.15

Substitute into equation 3

V' = (100×14.14)/3.25

V' = 435.38 L

8 0
3 years ago
When a substance undergoes a change
Amiraneli [1.4K]

Answer:D

Explanation:Each time state transforms into a solid matter thus a physical property is the answer.BRAINLIEST PLEASE

3 0
2 years ago
In a recent study, 50 males used a new weight-loss supplement, and 37 of them experienced weight loss after two weeks: In the sa
MatroZZZ [7]

<em>Answer:</em>

The new weight-loss supplement was less effective on females in the study. That is because only 65% of them lost weight after two weeks, whereas 74% of the males lost weight after two weeks.

<em>Explanation:</em>

37 out of 50 males lost weight after two weeks, so 74% of males lost weight ( (37 · 2)/(50 · 2) ). 13 out of 20 females lost weight after two weeks, so 65% of females lost weight ( (13 · 5)/(20 · 5) ). This means the supplement was less effective on females because males had a higher percentage of losing weight.

Hope this helps !! :D

7 0
2 years ago
Use the chemical equation to answer the question.
lukranit [14]

The statement that correctly describes the reaction is: Tungsten (W) changes oxidation numbers from +6 to zero, so it undergoes reduction.

<h3>WHAT IS OXIDATION AND REDUCTION:</h3>
  • Oxidation is the process whereby electrons are lost in a reaction while reduction involves the gain of electrons.

  • According to this question, the following reaction is given: WO3(s) + 3H2(g) → W(s) + 3H2O(g)

  • Tungsten has an oxidation number of +6 in WO3 and it is changed to 0 in W, hence, there is a gain of electrons by tungsten (W).

Therefore, the statement that correctly describes the reaction is: Tungsten (W) changes oxidation numbers from +6 to zero, so it undergoes reduction.

Learn more about oxidation-reduction reaction at: brainly.com/question/3867774

6 0
3 years ago
Can the structure of an atom similar to our solar system?
nika2105 [10]
<span>its because they're both structured the same way. for example the sun and the nucleus are the same (in the centre) and the electrons and planets orbiting are the same</span>
3 0
3 years ago
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