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Natasha2012 [34]
3 years ago
8

To separate a mixture of iron filings and salt, the most efficient method would be

Chemistry
2 answers:
CaHeK987 [17]3 years ago
7 0

Iron filings can be attracted by the magnet whereas salt can not. So the mixture can be separated by a magnet

Sloan [31]3 years ago
5 0

Answer:

passing a magnet through the mixture

Explanation:

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Identify the heterogeneous mixtures from the list. Check all that apply. salad dressing hydrochloric acid solution orange juice
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Answer:

salad dressing

Explanation:

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C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)
stiv31 [10]

¹/3 C3H8(g) + ⁵/3 O2(g)

Explanation:

The coefficient before every molecule is representative of the number of moles. We can represent it in ration form so as to calculate the question;

C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(l) means;

For every 1 mole of C₃H₈(g) and 5 moles of  O₂(g) produces  3 moles of  CO₂(g) and 4 moles of H₂O(l).

Therefore to produce 1.00 mole of CO₂(g);

We represent it in ratio;

C₃H₈(g) : CO₂(g)

1  :     3

What about ;

? (x)   :  1

We cross multiply;

3x = 1 * 1

X = 1/3

We evaluate the same for O₂;

O₂(g) : CO₂(g)

5 :     3

What about

? (x) :     1

3x = 5 * 1

x = 5/3

Learn More:

For more on evaluating moles in chemical reactions check out;

brainly.com/question/13967925

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7 0
2 years ago
Relative to the mass of the nucleous of a atom. the mass of electron is​
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The number of protons found in the nucleus equals the number of electrons that surround it, giving the atom a neutral charge (neutrons have zero charge). 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.Hoped this helped
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Why doesn’t a broken wineglass spontaneously fix itself, from a thermodynamic point of view?
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The answer is the option<span> 3.) Fixing a wineglass requires a large decrease in entropy.



Entropy is a termodynamical variable and it is defined as the degree of disorder of the system.



As per the second law of thermodynamics the spontaneous changes only occur when the entropy increases.



</span>Fixing the broken glasses by itself meant to decrease the entropy spontaneusly which violate the principle or second law of thermodynamics. So, it is not possible.   
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3 years ago
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The atomic number of magnesium is 12 this is also the number of which of the following
frozen [14]
The atomic number represents the number of protons present in an atom.Therefore,the answer is B.
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