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Bond [772]
3 years ago
13

What is 80% as a ratio

Chemistry
1 answer:
Rashid [163]3 years ago
7 0

Answer:

4 : 5

Explanation:

80 percent can be written as:

80/100

Now we can reduce the above fraction to its lowest term as shown below

80/100 = 8/10

Divide both the numerator and denominator by 2.

8/10 = 4/5

Now, we can not divide further. So the ratio becomes 4 : 5

You might be interested in
An unknown compound contains only C , H , and O . Combustion of 4.20 g of this compound produced 10.3 g CO 2 and 4.20 g H 2 O .
vodomira [7]

Answer:

C4H8O

Explanation:

We can get the answer through calculations as follows.

From the mass of carbon iv oxide produced, we can get the number of moles of carbon produced. We first divide the mass by the molar mass of carbon iv oxide. The molar mass of carbon iv oxide is 44g/mol

The number of moles of carbon iv oxide is 10.3/44 = 0.2341

Since there is only one carbon atom in CO2, the number of moles of carbon is same as above

The mass of carbon in the compound is simply the number of moles multiplied by the atomic mass unit. The atomic mass unit of carbon is 12. The mass of carbon in the compound is thus 12 * 0.2341= 2.8091

From the number of moles of water, we can get the number of moles of hydrogen. To get the number of moles of water, we need to divide the mass of water by its molar mass. Its molar mass is 18g/mol. The number of moles here is thus 4.2/18 = 0.2333

But there are 2 atoms of hydrogen in 1 mole of water and thus, the number of moles of hydrogen is 2 * 0.2333 = 0.4667 moles

The mass of hydrogen is thus 0.4667* 1 = 0.4667

The mass of oxygen equals the mass of the compound minus that of hydrogen and that of carbon.

= 4.2 - 0.4667 - 2.8091 = 0.9242

The number of moles of oxygen is the mass of oxygen divided by its atomic mass unit.

That equals 0.9242/16 = 0.0577625 moles

The empirical formula can be obtained by dividing the number of moles of each by the smallest which is that of oxygen

H = 0.4667/0.0577625 = 8

O = 0.0577625/0.0577625 = 1

C = 0.2341/0.0577625 = 4

The empirical formula is thus C4H8O

5 0
3 years ago
The percentage of carbon dioxide in the atmosphere has increased in the last century and is a concern for the environment as it
erma4kov [3.2K]
When fossil fuels are burned for energy, carbon that was sequestered underground is being released again into the atmosphere.
5 0
3 years ago
A special danger of drug is that you
Whitepunk [10]
You get addicted and also you can get cancer please do not do drugs
4 0
3 years ago
A student did not read the directions to the experiment properly and mixed up where to place the NaOH solution and the vinegar.
Keith_Richards [23]

Answer:

The answer is "Only at the end, a transformation of rose to color is made ".

Explanation:

 In this student puts its vinegar in the titrator, and NaOH throughout the beaker, which implies phenolphthalein has also been poured into water.

Phenolphthalein does have a pH range of 8.3-10 (approx). It's indeed pink in the basic medium therefore, the formulation becomes pink throughout the color by adding phenolphthalein to NaOH.

It is beginning of vinegar was its beginning of neutralization of NaOH from the titrator through full neutralization, a single piece of vinegar is added to a solution as well as the rose solution is lost throughout the beaker.

7 0
3 years ago
The compounds that make up<br> plastic are<br> because they contain carbon.
garri49 [273]

Answer:

Most plastics are based on the carbon atom

Explanation:

Hope this helps

5 0
3 years ago
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