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4 years ago

Explain why hexane will dissolve benzene but will not dissolve sodium chloride.

1 answer:

5 0

This is because benzene is a non polar solvent and hence benzene molecules cannot attract the solute (NaCl) molecules and NaCl does not dissolve in Benzene.

You might be interested in

How many atoms does the formula 2HgO have?

yKpoI14uk [10]

Answer:

Explanation:

2HgO

2 * 1 Hg atom = 2 Hg atoms

2 * 1 O atom = 2 O atoms

2+2 = 4 atoms total

3 0

3 years ago

A student is given an antacid tablet that weighs 5.4630 g. The tablet is crushed and 4.3620 g of the antacid is added to 200. mL

Luda [366]

Solution :

It is given that :

Weight of the antacid tablet = 5.4630 g

4.3620 gram of antacid is crushed and is added to the stomach acid of 200 mL and is reacted.

25 mL of the stomach acid that is partially neutralized required 13.6 mL of NaOH to be titrated for a red end point.

27.7 mL of $NaOH$ solution is equivalent to $25 \ mL$ of the original stomach acid. Therefore, 13.6 mL of NaOH will take x $\frac{25\text{ mL of original stomach acid}}{\text{27.7 mL of NaOH}}$

= 12.27 ml of the original stomach acid.

4 0

3 years ago

Classify the following dienes and polyenes as isolated, conjugated, cumulated, or some combination of these classifications.

lawyer [7]

Answer:

cycloocta-1,4-diene- isolated double bond

cycloocta-1,3-diene- conjugated double bond

cyclodeca-1,2-diene- cumulated double bond

cycloocta-1,3,5,7-tetraene- conjugated double bond

cyclohexa-1,3,5-triene (benzene) - conjugated double bond

penta-1,2,4-triene- cumulated and conjugated double bond

Explanation:

A conjugated double bond is a system that contains alternate double and single bonds. It is renowned for its unusual stability.

A cumulated double bond is a double bond system involving about three atoms e.g C=C=C.

An isolated double bond is a system of double bonds separated by more than one single bond.

8 0

4 years ago

If an instrument has 10 ml td +/- 0.01 ml written on it, the user should ..... question 5 options: record 10 ml in the notebook

galina1969 [7]

Answer : The correct option is "record 10.00 ml in the notebook after using it."

Explanation :

If an instrument has "10 mL TD" written on it, that means the instrument is meant To Deliver (TD) 10 mL of volume.

Therefore the option that has 5.00 mL is not correct.

"+/- 0.01 mL" indicates the precision of the instrument. We know that no measurement is 100% accurate and there is always some uncertainty associated with any measurement.

Here, 0.01 indicates the uncertainty in the measurement.

When we have 0.01 mL , that means the instrument can record precisely to the hundredths place.

The more the significant figures, the greater is the accuracy of the measurement.

Therefore when we use an instrument that has "+/- 0.01 mL" written on it, we should record the reading as 10.00 mL

6 0

3 years ago

Record your findings about sound and light waves for each of the following.

Troyanec [42]

Answer:

Sound waves travelling through the air: Sound waves travelling through air are just like longitudinal waves lacking compressions and rarefactions. The speed of sound waves in air is approximately 332 metres per second.

Light waves travelling through air: Light waves travel in air at a much faster rate than sound waves. Light waves can travel with a speed of 300 000 kilometres per second through air.

Sound waves traveling through metal: Sound waves travel about 17 times faster in metal as compared to air. The sound waves travel with an approximate speed of 5,960 meters per second in metals.

Light waves travelling through metal: The speed of light waves in a metal medium is usually at a net speed which is less than 3.00 x 108 m/s.

Light travels faster than sound waves because light waves are not pressure waves like the sound waves. They also do not require a medium as the sound waves.

7 0

3 years ago