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miv72 [106K]
3 years ago
9

The variable in an experiment that is changed on purpose

Chemistry
1 answer:
DiKsa [7]3 years ago
4 0
The answer is Independent Variable
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Its the first second and the fourth

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A chemical reaction that ______ energy can be used to heat up other substances.
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What is the element present for copper
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Copper is an brown-orange color which it's atomic number is 29. With high thermal and electricity conductivity with it's smooth surface.

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ch question carries 2 mark. Time Remaining : 00 : 46 : 33 Some oxides are given below. (i)Na2O (ii)NO2 (iii) CO2 (iv) MgO a) Whi
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<h3>Further explanation</h3>

The basic oxide is an oxide-forming a base solution.

These oxides are mainly from group 1 alkaline and group 2-alkaline earth

If this oxide is dissolved in water it will form an alkaline solution

LO + H₂O --> L(OH)₂ ---> alkaline earth

L₂O + H₂O --> LOH --> alkaline

So the basic oxides  : Na₂O and MgO

Na₂O + H₂O --> NaOH (sodium hydroxide, strong base)

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The aqueous solution of CO₂ , obtained by dissolving CO₂ in water

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In general, basic oxide is obtained from metal oxide, while acid oxide is obtained from non-metal oxide

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