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Law Incorporation [45]
2 years ago
6

Which of the following materials fall in the category of a ‘‘pure substance’’?

Chemistry
1 answer:
pishuonlain [190]2 years ago
6 0

Answer:

1) <em>Ice, iron, calcium oxide and mercury</em> are <u>pure substances since they contain particles of only one kind of matter.</u>

2) <em>In contrast, milk, hydrochloric acid</em> (hydrogen chloride gas dissolved in water), brick and air cannot be called <u>pure substances because they consists of particles of more than one kind of matter.</u>

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18 ) Liquid A and Liquid B are clear liquids. They are placed in open containers and allowed to evaporate. When evaporation is c
arsen [322]

Answer:

Liquid A is a homogeneous mixture and Liquid B is a heterogeneous mixture

Explanation:

5 0
3 years ago
How many moles of H2SO4 are needed to completely neutralize 0.0164 mol KOH
Vanyuwa [196]
0.0082 You have to equal out the amount of concentration with the unknown
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4 years ago
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Types of isomers possible for ch3 ch2 ch2 ch3
puteri [66]

Answer:

It has two isomers; n-butane and isobutane. Here n-butane is a straight-chain compound with four carbon atoms bonded with single covalent bonds. Explanation: Butane is an alkane with four carbon atoms so molecular formula is C4H10.

Explanation:

4 0
2 years ago
Name the following compound: 2-ethyl-4-methylheptene 3,5-dimethyl-2-octene 2-ethyl-4-methylheptane 3-methyl-5-propyl-2-hexene
Nadusha1986 [10]

Answer:

3,5-dimethyl-2-octene

Explanation:

The parent chain will be choosen based on the highest value. In this case, if we count from top to bottom, we'll get seven carbon, however if we count from the second carbon, going left and then down, we'll get eight carbon. So the parent chain is octene

The double bond is located at the second carbon and the methyl groups are located on carbon 3 & 5. Since there are two methyl groups, we add di- in front of methyl to indicate two methyl groups present.

Note: The functional group has to be prioritise and it needed to be a part of the parent chain. In this case, the functional group is the double bond. (alkene)

5 0
3 years ago
1. Compare the masses and the charges for the three particles which make<br> up<br> the atom.
storchak [24]

Answer:

The charge on a neutron=1+-/neutral

It has a mass 1

The charge on electron is 1-/negative

It's mass is 1/1840

The charge on a proton is 1+

It has a mass 1 too.

Explanation:

8 0
3 years ago
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