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77julia77 [94]
3 years ago
14

Atomic weight of 20 elements

Chemistry
1 answer:
Bezzdna [24]3 years ago
4 0
Give me one second. Let me see

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if you were to compare the mass of the products and reactants in a reaction, you would find that the mass of the products is alw
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If you were to compare the mass of the products and reactants in a reaction, you would find that the mass of the products <span>is equal to the mass of the reactants.</span>
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Given the following equation: 2 KClO 3 --&gt; 2 KCl + 3 O 2
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12.0 mol KClO3 × (3 mol O2/2 mol KClO3)

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3 years ago
Select the solute that is likely most soluble in hexane, C6H14-​
Bad White [126]

Answer:

The solute that is most likely soluble in hexane is S₈

Explanation:

S₈ is a non-polar solute that exhibits the same characteristics and properties as hexane. Following the common principle "like dissolves like"; polar compounds will be soluble in polar solvents while non-polar compounds will be soluble in non-polar solvents. As such, since S₈ is non-polar, then it will be soluble in hexane.

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3 years ago
Imagine you are at a local water park on a hot summer day and your feet begin to get hot from the cement. Looking ahead, you not
valkas [14]

Answer:

Sand has less specific heat than water.

Explanation:

Specific Heat is amount of heat needed per unit mass, to raise temperature by 1 degree celsius.

More specific heat means more heat energy needed to increase temperature. It implies - more time needed to absorb heat, increase temperature; and also more time needed to lose its heat.

Less specific heat means less heat energy needed to increase temperature. It implies - less time needed to absorb heat, increase temperature; and also less time needed to lose its heat.

Sand has less specific heat than water. So, it needs less heat absorption to increase temperature by per unit (celsius) ; than water. Hence, same level of heat to both sand & water ; increase temperature of sand more than water, & make it more hot.

8 0
3 years ago
What is the formula for lead(ii) phosphate?
Solnce55 [7]

Explanation:

Lead(II) phosphate is an ionic compound with chemical formula Pb3(PO4)2. Lead(II) phosphate is a long-lived electronically neutral reagent chemical.[1] Despite limited tests on humans, it has been identified as a carcinogen based on tests on animals conducted by the EPA.[2] Lead(II) phosphate appears as hexagonal, colorless crystals or as a white powder. Lead(II) phosphate is insoluble in water and alcohol but soluble in Nitric acid (HNO3) and has fixed alkali hydroxides. When lead(II) phosphate is heated for decomposition it emits very toxic fumes containing Lead (Pb) and POx.[3]

6 0
3 years ago
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