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klio [65]
2 years ago
11

Which of these mixtures could be most easily seperate by filtaration?

Chemistry
1 answer:
Mila [183]2 years ago
8 0
There is no mixture to pick from
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18. When a chemical reaction takes place in an open system, matter_____.
zheka24 [161]
A) can enter from the surroundings, but cannot escape to the surroundings
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3 years ago
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(b)
mixas84 [53]

Answer:

Group 18th

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The group 18th of periodic table which is composed of Noble gases mainly was missing from the Mendeleev's periodic table. The reason for this is that Noble gases are least reactive, therefore, it was difficult to predict such elements which do not react with other elements.

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Why don't elements in a group have consicutive atomic numbers?​
slamgirl [31]

Answer:

Periods have consecutive atomic number as they are in a row and groups are vertical meaning they are in a column and groups have similar properties

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2 years ago
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The production of iron and carbon dioxide from iron(iii) oxide and carbon monoxide is an exothermic reaction. which expression c
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Missing question:
A. [3.40 mol Fe2O3 (s) × 26.3 kJ/1 mol Fe2O3 (s)] / 2 
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<span>C. 26.3 kJ/1 mol Fe2O3 (s) / 3.40 mol Fe2O3 (s) </span>
<span>D. 26.3 kJ/1 mol Fe2O3 (s) – 3.40 mol Fe2O3 (s).
</span>Answer is: B.
Chemical reaction: F<span>e</span>₂O₃<span>(s) + 3CO(g) → 2Fe(s) + 3CO</span>₂<span>(g);</span>ΔH = <span>+ 26.3 kJ.
When one mole of iron(III) oxide reacts 26,3 kJ of energy is required and for 3,2 moles of iron(III) oxide 3,2 times more energy is required.</span>
8 0
3 years ago
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11cm+11.38cm+500.55cm=
Vika [28.1K]

Answer:522.93 centimeters

Explanation:

I calculated the numbers

8 0
3 years ago
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