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3 years ago

Match the factors which affect the rate of dissolving/dissociation/diffusion.

Chemistry

1 answer:

aev [14]3 years ago

4 0

Answer:

Increased surface area - finely divided solute

like dissolves like - matching polarity

temperature - rate proportional to kinetic energy

stirring spreads - solute throughout solution

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Do you always have to begin with two compounds in a neutralization reaction

Paladinen [302]

Answer:

Yes.

Explanation:

Only an acidic compound and then a basic compound react(neutralization reaction) to give a salt.

Acid+Base=Salt+Water.

Hope this helps❤❤❤

3 0

3 years ago

(1.000) How many moles can be found in 83.80 grams of krypton?

marin [14]

Answer: 1 mole Kr

Explanation: solution

83.80g Kr x 1mole Kr / 84 g Kr

= 0.997 or approximately 1 mole Kr

6 0

3 years ago

What is the name of the alkane having five carbons?

Tatiana [17]

Explanation:

Alkanes are the simple hydrocarbons that have only carbon and hydrogen atoms attached to each other through single bonds.

General chemical formula of an alkane is $C_{n}H_{2n+2}$ , where n is any integer.

For example, if n = 5 then formula of the alkane will be as follows.

$C_{n}H_{2n+2}$

= $C_{5}H_{2(5)+2}$

= $C_{5}H_{12}$

A suffix "-ane" is added in the name of an alkane. So, an alkane with five carbon atoms will be known as pentane.

7 0

3 years ago

Read 2 more answers

Which of these statements is true? A. Some molecules may contain no atoms. B. Some elements found in nature exist as molecules.

Nata [24]

I think it is most likely B. Some elements found in nature exist as molecules. Like for instance the element of oxygen. We can think of it in nature as a diatomic molecule,

5 0

4 years ago

How many moles are present 560.0 g of iron (lll) sulfate

xxMikexx [17]

Answer:

1.400 mol

Explanation:

To convert grams to moles, you will need the molar mass. The molar mass of iron(iii) sulfate is 399.88 g/mol. Divide grams by the molar mass to find moles.

(560.0 g)/(399.88 g/mol) = 1.400 mol

There are 1.400 mol present in 560.0 g of iron(iii) sulfate.

3 0

4 years ago