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marysya [2.9K]
3 years ago
6

How many significant digits are in: 6.02 x 105

Chemistry
1 answer:
bija089 [108]3 years ago
5 0

Answer: Number of Significant Figures: 3

The Significant Figures are 6 0 2

Explanation:

6.02 x10^5

Significant figures are the digits of a number that are meaningful in terms of accuracy or precision. They include:

Any non-zero digit

Zeros between non-zero digits as in 3003 or 45.60009

Trailing zeros only when there is a decimal point as in 6750. or 274.3300

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Which factor below does not affect how fast a solute dissolves in a solvent?
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Stirring this is because the three elements are factors affecting dissolving of a solvent. Eg temprature affects in hotness or coldness, Particle size affects whether it is big or small while quantity of soluble affects by the amount
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3 years ago
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The natural abundances of elements in the human body, expressed as percent by mass, are: oxygen (O),65 percent; carbon (C), 18 p
almond37 [142]

Answer:

The mass in grams of each element in the body of 62 Kg are

Oxygen               40300 g

Carbon                11160 g

Hydrogen            6200 g

Nitrogen              1860 g

Calcium                992 g

Phosphorus         744 g

Other elements   744 g

It is possible to check it adding all the components, the total is 62000 g.  

Explanation:

Firstly, we have a total mass of 62 Kg and the composition as a percentage of each component.

                            Percentage ( %)

Oxygen               65.0

Carbon               18.0

Hydrogen            10.0

Nitrogen              3.0

Calcium               1.6

Phosphorus         1.2

Other elements   1.2

Taking the definition of a percentage as part of hundred total, each percentage can be expressed as a decimal number. We should divide the percentage with 100 of total. For example: Oxygen 65%, it means 65/100 = 0.65. So, Oxygen is 0.65 in decimal numbers. We do the same for each component.

                           Percentage ( %)      Decimal number

Oxygen               65.0                         65/100 = 0.65

Carbon               18.0                           18/100 = 0.18

Hydrogen            10.0                         10/100 = 0.10

Nitrogen              3.0                           3/100 = 0.03

Calcium               1.6                           1.6/100 = 0.016

Phosphorus         1.2                           1.2/100 = 0.012

Other elements   1.2                           1.2/100 = 0.012

Finally. We can multiply decimal number of each component taking the total. 1 Kg is equivalent to 1000 g.

So, 62 Kg = 62 * 1000 g = 62000 g

After that we get the mass in grams of each element, by multiplying 62000 g and the decimal number of each component as follows:

                           Percentage ( %)      Decimal number      Mass in grams (g)        

Oxygen               65.0                         65/100 = 0.65         0.65*62000=40300

Carbon               18.0                           18/100 = 0.18         0.18*62000=  11160

Hydrogen            10.0                         10/100 = 0.10         0.10*62000=   6200

Nitrogen              3.0                           3/100 = 0.03          0.03*62000= 1860

Calcium               1.6                           1.6/100 = 0.016        0.016*62000= 992

Phosphorus         1.2                           1.2/100 = 0.012        0.012*62000=744

Other elements   1.2                           1.2/100 = 0.012        0.012*62000=744  

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State where the chemical potential energy released from a reaction is stored
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It is stored in the bonds between atoms.
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What is cis and trans izomeric
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Cis-trans isomerism, also known as geometric isomerism or configurations isomerism is a term used in organic chemistry
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When given the following: density = 0.79 g/mL and mass =8g (answer can be found in your reading) What is the volume of the objec
tatyana61 [14]

Hey there!:

Density = 0.79 g/mL

mass = 8 g

Volume = ??

Therefore:

D = m / V

0.79 = 8 / V

Volume = 8 / 0.79

Volume  = 10.126 mL

Hope this helps!

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2 years ago
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