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lina2011 [118]
4 years ago
9

Money management becomes more important when you are responsible for paying all your own expenses.

Chemistry
2 answers:
damaskus [11]4 years ago
5 0
Hi there!

You're answer is going to be -

True. Money management does become more important as you learn to pay you're own expenses.

Hope this helps! Have a great day!

~Alexa
IRINA_888 [86]4 years ago
5 0

Answer:

True

Explanation:

When you are responsible for paying your own expenses, you start to take more responsibility for how your money will be spent. At this point you begin to understand the importance and begin to value money management. Money management is the activity, where you decide how much of the money you have will be spent and what will be spent. When you pay your own expenses, you must manage your money well and ensure that all your needs, such as home, food, taxes, gasoline and other things are paid. If you do not manage your money you will end up spending on needless things and you may have some unpaid necessary expenses, which will cause problems for your life.

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What is the percent of O in<br> CO2?
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Answer:

72.7% of oxygen

Explanation:

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3 years ago
What is the theoretical yield of fluorenone if you oxidize 175 mg of fluorene?
My name is Ann [436]

Answer:

  • 602 mg of CO₂ and 94.8 mg of H₂O

Explanation:

The<em> yield</em> is measured by the amount of each product produced by the reaction.

The chemical formula of <em>fluorene</em> is C₁₃H₁₀, and its molar mass is 166.223 g/mol.

The <em>oxidation</em>, also know as combustion, of this hydrocarbon is represented by the following balanced chemical equation:

        2C_{13}H_{10}+31O_2\rightarrow 26CO_2+10H_2O

To calculate the yield follow these steps:

<u>1. Mole ratio</u>

          2molC_{13}H_{10}:31molO_2:26molCO_2:10molH_2O

<u />

<u>2. Convert 175mg of fluorene to number of moles</u>

  • 175mg/times 1g/1,000mg=0.175g

  • Number of moles = mass in grams / molar mass

  • \text{number of moles}=0.175g/166.223g/mol=0.0010528mol

<u>3. Set a proportion for each product of the reaction</u>

a) <u>For CO₂</u>

i) number of moles

         2molC_{10}H_{13}/26molCO_2=0.0010528molC_{10}H{13}/x

x=0.0010528molC_{10}H_{13}\times 26molCO_2/2molC_{10}H_{13}=0.013686molCO_2

ii) mass in grams

The molar mass of CO₂ is 44.01g/mol

  • mass = number of moles × molar mass
  • mass = 0.013686 moles × 44.01 g/mol = 0.602 g = 602mg

b) <u>For H₂O</u>

i) number of moles

0.0010528molC_{10}H_{13}\times10molH_2O/2molC_{10}H_{13}=0.00526molH_2O

ii) mass in grams

The molar mass of H₂O is 18.015g/mol

  • mass = number of moles × molar mass
  • mass = 0.00526 moles × 18.015 g/mol = 0.0948mg = 94.8 mg
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What is conductivity?
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