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Ivan
2 years ago
14

Select the answer for this number showing three significant figures. Remember to round if necessary. 0.566 m 0.600 m 0.570 m 0.5

00 m 0.566 m
*for science ​
Chemistry
1 answer:
sergeinik [125]2 years ago
5 0

The significant figure for 0.566 is option(d) i.e, 0.566 m.

In positional notation, significant figures are the digits in a number that is trustworthy and required to denote the amount of something. The correctness and precision of numbers are the focus of significant figures, also known as significant digits, which are crucial components of scientific and mathematical calculations. Significant numbers play a crucial role when estimating the degree of uncertainty in the outcome.

The digit following the second significant figure is known as the third significant figure of a number. It follows that this is accurate even if the digit is zero. Therefore, the third and fourth significant values of 20,499 are 4, and the third and fourth significant figures of 0.0020499 are 9, respectively.

In order for 566 to have three significant figures, we must round it

  • option 1: There is only one Significant figure, which is 0.600.
  • option2: 0.570 = Two  Significant figure.
  • option 3:  0.500 = 1 Significant Figures.
  • option4:  3 Significant Figures in 0.566

Option 4, which is equal to 0.566, is the most appropriate of the given options because it has three significant figures when it is rounded off.

To know more about significant figures refer to:  brainly.com/question/14804345

#SPJ9

.

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3 years ago
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Answer:

53kg is the expected yield of lead

Explanation:

Firstly, in order to solve this question, we need to write the equation of reaction correctly. This is as follows:

PbO(s) + C(s) ---> Pb(l) + CO(g)

We proceed from here. We should get the limiting reactant but this can only be obtained by getting the number of moles of each reactant present.

The formula to use across all boards is that the number of moles is the mass of each of the reactant divided by the molar mass of each of the reactant.

For PBO, mass is 57kg = 57000g

Molar mass of PBO = 223.20g/mol

The number of moles is thus 57,000/223.2 = 255.37 moles

For carbon, mass is also 57kg = 57000g

Molar mass is 12g/mol

Number of moles of carbon = 57000/12 = 4750 moles

From the number of moles, we can see that the number of moles of Carbon is greater than that of PbO. This means that PbO is the limiting reagent.

Hence we use it to calculate percentage yield.

The number of moles of lead formed is the same of number of moles of lead oxide = 255.37 since we have mole ratio of 1 to 1

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The mass of lead formed is = moles of lead formed * molar mass of lead = 207.20 * 255.37 = 52,912g which is approximately 53kg

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6 0
3 years ago
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Strong acid

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Hydroxonium ions are formed as a result of the chemical bonding between the oxygen of water molecules and the protons released by the acid due to its ionisation. This makes aqueous solution of acids conduct electricity.

A strong acid is one that ionizes almost completely. Examples are:

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bija089 [108]

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Explanation:

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