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SCORPION-xisa [38]
3 years ago
7

Four properties of water are listed. It reacts with halogens to form oxygen gas as one of the products. It is transparent and ta

steless in its pure form. It freezes at a temperature of 0 °C and lower. It decomposes to form hydrogen and oxygen. Which are the chemical properties of water? 1 and 2 1 and 4 2 and 3 3 and 4
Chemistry
1 answer:
Bezzdna [24]3 years ago
8 0

Chemical property is the property of the substances that describes the ability of the substance to involve in chemical reactions. Physical property is that which does not change the chemical composition of the substances. The following properties of water that it is transparent and tasteless in its pure form and it freezes at a temperature of 0^{0}C are physical properties as they simply indicate the change in physical state without any change in chemical composition of water.

The other two properties that water reacts with halogens to form oxygen gas as one of the products and water decomposes to form hydrogen and oxygen are chemical properties as the chemical composition of water changes in the given reaction.

Therefore the correct answer is b. 1 and 4

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b. 171.1 g of glucose are required

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First of all, we should convert the mass to g, afterwards to moles

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Then 5.55 moles of glucose may produce the double of moles of C₂H₅OH

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Let's convert the moles to mass → 11.1 mol . 46g /1mol = 510.6 g

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In 90 mL of gasoline we have 10 mL of C₂H₅OH

In 1000 mL (1L) we would have (1000 . 10)/ 90 = 111.1 mL

Now we have to determine the mass of C₂H₅OH that is contained in the volume we have calculated. We must use the density.

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Therefore 1.91 mol would be produced by (1.91 .1)/2 = 0.954 moles

Finally we convert the moles of glucose to mass:

0.954 mol . 180 g/ 1mol = 171.7 grams.

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