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3 years ago

Two substances in a mixture differ in density and particle size. theses properties can be used to

Chemistry

2 answers:

kykrilka [37]3 years ago

8 0

Answer:

option 1. Two substances in a mixture differ in density and particle size. These properties can be used to separate the substances. These properties can be manipulated in order to have a better separation between the two substances.

Explanation:

irina [24]3 years ago

6 0

Answer:

Two substances in a mixture differ in density and particle size. These properties can be used to separate both of them using the separating funnel or using filtration (filter paper).

Explanation:

Since their densities are different, one substance should float above the other in the mixture which allows for the separating funnel to let the substance sinking below (with the heavier density) to flow out first before changing the beaker to let the lighter substance flow out.

The substance with a bigger particle size would not be able to pass through the filter paper unlike the substance with the smaller particle size as the filter paper's pores is not big enough for it to pass through, separating both substances (with one on the paper and the other outside the filter paper, preferably in the beaker placed below the paper).

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Which best describes an element? A pure substance. A type of a mixture. A pure compound. An impure substance.

mr Goodwill [35]

a pure compound because an element is untouched and is just itself

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4 years ago

Read 2 more answers

The mass of a silver bracelet is 2.5 gram, it occupies a volume of 48cm3, what is its density?

NNADVOKAT [17]

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass = 2.5 g

volume = 48 cm³

The density is

$density = \frac{2.5}{48} \\ = 0.052083333...$

We have the final answer as

Hope this helps you

3 0

3 years ago

At 25°C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.

stealth61 [152]

Answer : The value of $\Delta H$ for the reaction is, -565.6 kJ

Explanation :

First we have to calculate the molar mass of CO.

Molar mass CO = Atomic mass of C + Atomic mass of O = 12 + 16 = 28 g/mole

Now we have to calculate the moles of CO.

$\text{Moles of }CO=\frac{\text{Mass of }CO}{\text{Molar mass of }CO}=\frac{1g}{28g/mole}=\frac{1}{28}mole$

Now we have to calculate the value of $\Delta H$ for the reaction.

The balanced equation will be,

$2CO(g)+O_2(g)\rightarrow 2CO_2(g)$

From the balanced chemical reaction we conclude that,

As, $\frac{1}{28}mole$ of CO release heat = 10.1 kJ

So, 2 mole of CO release heat = $2\times 28\times 10.1=565.6kJ$

Therefore, the value of $\Delta H$ for the reaction is, -565.6 kJ (The negative sign indicates the amount of energy is released)

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3 years ago

Will 1 gram of sugar or 1 gram of salt dissolve more quickly which one

Montano1993 [528]

1 gram of sugar because super molecules are bigger then the ions of dissolved salt

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How does the structure of covalent bonds affects their structure.

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3 years ago