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3 years ago

What does it mean to have high density?

1 answer:

4 0

Density describes how compact or concentrated something is. For example, suppose you have two boxes, one large and one small. ... That means the small box has a higher density than the large box. Density also tells how concentrated or crowded something is.

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What would happen if hydrogen and nitrogen combine?

Tanzania [10]

<span>At room temperature and atmospheric pressure, nothing happens when the two gasses are mixed. However, at high temperature and pressure (450C, 200atm), in the presence of an iron oxide catalyst, the production of ammonia is thermodynamically advantageous.</span>

5 0

3 years ago

The balanced equation below shows the products that are formed when pentane (C5H12) is combusted. C5H12 + 8O2 mc029-1.jpg 10CO2

Maru [420]

Answer: The mole ratio of oxygen to pentane for the combustion of pentane is 8 : 1.

Explanation: The given reaction is a type of combustion reaction.

Combustion reaction is a reaction in which a hydrocarbon reacts with oxygen gas to produce water and carbon dioxide gas.

For the reaction of pentane with oxygen, the balanced equation would be:

$C_5H_{12}+8O_2\rightarrow 5CO_2+6H_2O$

In the reaction, 1 mole of $C_5H_{12}$ reacts with 8 moles of $O_2$ gas.

Thus giving us the mole ratio as

Oxygen : Pentane = 8 : 1

4 0

3 years ago

Read 2 more answers

A chemist needs to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solutio

Alja [10]

Answer:

Concentration of original solution = 1.66

Explanation:

We know that

$H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O$

We have given concentration of NaOH = 0.1678

Volume of NaOH = 19.88 mL = 0.01988 L

So moles of NaOH = volume x concentration of NaOH

= $0.01988\times 0.1678=0.00333mole$

Moles of $H_2SO_4$ in 10 mL of diluted solution = 1/2 x moles of NaOH

= $\frac{1}{2}$ x 0.00333 = 0.00166 mol

Moles of $H_2SO_4$ in 25 mL of original solution

= moles of H2SO4 in 250 mL of diluted solution

= $\frac{250}{10}$ x 0.00166 = 0.0415 mol

Concentration of original solution = $\frac{moles}{volume}$

= $\frac{0.0415}{0.025}=1.66$

8 0

3 years ago

Describe how to separate a mixture of sugar and water.

Nonamiya [84]

Let the water evaporate and you'll be left with the sugar, or boil the water and collect the steam. the sugar will be left in the container you boiled the water in and you'll still have the water from the steam.

3 0

4 years ago

Read 2 more answers

In the Tough Man Competition, very strong men are challenged to push or pull extremely large and heavy objects to test their str

Sergeeva-Olga [200]

Sorry i don’t know the answer i just wanted to inform you that, that persons link is fake.

8 0

3 years ago