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aleksklad [387]
3 years ago
13

Sort the numbers based on the numbers of significant figures they have

Chemistry
2 answers:
barxatty [35]3 years ago
6 0

Explanation:

A digit or number that contains number from 1 to 9 is known as a significant figure. In between two significant numbers if any zero occurs then it is also considered as significant.

Therefore, the given numbers are sorted as follows based on the numbers of significant figures they have:

  • 0.0093 has 2 significant figures
  • 120.9 has 4 significant figures
  • 1,000 has 4 significant figures
  • 1.008 has 4 significant figures
  • 670 has 3 significant figures
  • 0.184 has 3 significant figures
  • 1.30 has 3 significant figures
Blababa [14]3 years ago
5 0
-two significant figures
-four significant figures
-One significant figure
-four significant figures
-two significant figures
-three significant figures
-three significant figures
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I am almost positive that the answer is D

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A chemical test has determined the concentration of a solution of an unknown substance to be 2.41 M. a 100.0 mL volume of the so
Oksana_A [137]

Answer : The molar mass of unknown substance is, 39.7 g/mol

Explanation : Given,

Mass of unknown substance = 9.56 g

Volume of solution = 100.0 mL

Molarity = 2.41 M

Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.

Formula used :

\text{Molarity}=\frac{\text{Mass of unknown substance}\times 1000}{\text{Molar mass of unknown substance}\times \text{Volume of solution (in mL)}}

Now put all the given values in this formula, we get:

2.41M=\frac{9.56g\times 1000}{\text{Molar mass of unknown substance}\times 100.0mL}

\text{Molar mass of unknown substance}=39.7g/mol

Therefore, the molar mass of unknown substance is, 39.7 g/mol

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<span>6s²4f¹⁴5d¹⁰6p²
6 shows that the element is in the 6 period,
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The sample of argon gas that has the same number of atoms as a 100 milliliter sample of helium gas at 1.0 atm and 300 is 100. mL at 1.0 atm and 300. K

The correct option is D.

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The number of moles of gases in each of the given samples of gas is found below using the ideal gas equation.

The ideal gas equation is: PV/RT = n

where;

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  • V is volume
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  • T is temperature of gas
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Moles of gas in the given helium gas sample:

P = 1.0 atm, V = 100 mL or 0.1 L, T = 300 K

n =  1 * 0.1 / 0.082 * 300

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Learn more about ideal gas equation at: brainly.com/question/24236411

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