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Leto [7]
3 years ago
12

How many significant figures are in each measurement? 0.00052 m

Chemistry
2 answers:
NikAS [45]3 years ago
8 0
All the measurement contain two significant figures
leonid [27]3 years ago
6 0

a. 0.00052 m


Answer: two significant figures.


Explanation:


The zeros to the left of 52 do not count as signficant figures.


Only, 5 and 2 are significant figures.


b. 9.8 x 10⁴ g


Answer: two significant figures.


Explanation:


Both 9 and 8 count as significant figures. Here there are not additional zeros that might confuse you.



c. 5.050 mg


Answer: four significant figures.


Explanation:


The zeros to the right count as signficiant figjres. So here, 5, 0, 5, and 0 are the significant figures.



d. 8700 ml


Answer: two signficant figures.


Explanation:


Since the two zeros to the right are used to determine the place value of 87, you cannot count them as significant figures. Here, only 8 and 7 are significant figures.

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1.54 x 10⁶kW

Explanation:

The problem here is converting from megawatts into kilowatts.

  Given 1540megawatts.

The mega- and kilo- watts are prefixes that denotes multiples of units.

  1 megawatt = 10⁶watts

  1 kilowatt = 10³watts

Now given 1540megawatts power to Kilowatt power;

   We see that :

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 1540mW x \frac{1000kW}{1mW} = 1.54 x 10⁶kW

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Explanation:

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1. Write the balanced equation for the breakdown of hydrogen peroxide. The equation has been written, you just have to balance.
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How much salt (NaCl) is carried by a river flowing at 30.0 m3/s and containing 50.0 mg/L of salt
denis23 [38]

Answer:

129,600kg/day

Explanation:

The river is flowing at 30.0

1 m³ is equivalent to 1000L

flowrate of river = 30*1000 =30,000L/s

Convert L/s to litre per day by multiplying by 24*60*60

flowrate of river = 30,000 * 24*60*60 L/day

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if the river contains 50mg of salt  in 1L of solution

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Y=\frac{2592000000*50}{1}

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