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Katyanochek1 [597]
2 years ago
4

You set up a lemonade stand to raise money for your soccer tournament. You plan to sell cups of lemonade for $1.50/each. Your re

cipe calls for 8 lemons, 2 cups of sugar and 8 cups of water to yield 10 cups of lemonade.
You open your lemonade stand with 80 lemons, 3 bags of sugar containing 6 cups each, and 10 gallons of water (16 cups per gallon). What is the maximum you can make with the supplies on hand?
A) $112.50
B) $135
C) $75
D) $90
Chemistry
2 answers:
Neporo4naja [7]2 years ago
7 0

Answer:

The maximum you can make with the supplies on hand is:

  • B) $135

Explanation:

The requirements for the recipe are: 8 lemons, 2 cups of sugar and 8 cups of water to yield 10 cups of lemonade, so you must divide the total supplies into the requirements for the recipe and see how many glasses each reaches:

  1. 80 lemons / 8 lemons = 10 * 10 glasses of lemonade = <u>100 glasses.</u>
  2. 3 bags of sugar * 6 cups = 18 cups of sugar / 2 cups of sugar = 9 * 10 glasses of lemonade = <u>90 glasses of lemonade</u>.
  3. 10 gallons of water * 16 cups = 160 cups of water / 8 cups of water = 20 * 10 glasses of lemonade = <u>200 glasses of lemonade</u>.

As you can see, although in water there are supplies for 200 glasses of lemonade or in lemons there are supplies for 100, sugar only allows 90 glasses of lemonade, so you must use this value to calculate the income from the sale of lemonade, the which, since it is worth $ 1.50 per glass you have:

  • <u>Lemonade sales revenue = 90 * $ 1.50 = $ 135</u>
Andrej [43]2 years ago
3 0

Answer:

B. $135

Explanation:

Did the math for myself on paper, take it or leave it. Just thought I'd share since there isn't any answers yet.

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An atom in the ground state contains a total of 5 electrons 5 protons and 5 neutrons. Which Lewis electron-dot diagram represent
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I don't know if you didn't gave a picture choice or if i didn't get the picture.
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2 years ago
Complete ionic equation K2CO3(aq)+2CuF(aq) → Cu2CO3(s)+2KF(aq) Examine each of the chemical species involved to determine the io
Fudgin [204]

Answer:

2K+(aq) + CO3²¯(aq) + Ca^2+(aq) + 2F¯(aq) —› Cu2CO3(s) + 2K+(aq) + 2F¯(aq)

Explanation:

K2CO3(aq) + 2CuF(aq) → Cu2CO3(s) + 2KF(aq)

The complete ionic equation for the above equation can be written as follow:

In solution, K2CO3 and CuF will dissociate as follow:

K2CO3(aq) —› 2K+(aq) + CO3²¯(aq)

CuF(aq) —› Ca^2+(aq) + 2F¯(aq)

Thus, we can write the complete ionic equation for the reaction as shown below:

K2CO3(aq) + 2CuF(aq) —›

2K+(aq) + CO3²¯(aq) + Ca^2+(aq) + 2F¯(aq) —› Cu2CO3(s) + 2K+(aq) + 2F¯(aq)

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Which has not been suggested as a reasonably practical way to store large amounts of hydrogen in relatively small spaces for its
Yakvenalex [24]

Answer: A. Liquefy hydrogen under pressure and store it much as we do with liquefied natural gas today.

Explanation:

Current Hydrogen storage methods fall into one of two technologies;

  1. <em>physical storage</em> where compressed hydrogen gas is stored under pressure or as a liquid; and
  2. <em>chemical storage</em>, where the hydrogen is bonded with another material to form a hydride and released through a chemical reaction.

Physical storage solutions are commonly used technologies but are problematic when looking at using hydrogen to fuel vehicles. Compressed hydrogen gas needs to be stored under high pressure and  requires large and heavy tanks. Also, liquid hydrogen boils at -253°C (-423°F) so it needs to be stored cryogenically with heavy insulation and actually contains less hydrogen compared with the same volume of gasoline.  

Chemical storage methods allow hydrogen to be stored at much lower pressures and offer high storage performance due to the strong binding of hydrogen and the high storage densities. They also occupy relatively smaller spaces than either compressed hydrogen gas or liquified hydrogen. A large number of chemical storage systems are under investigation, which involve hydrolysis reactions, hydrogenation/dehydrogenation reactions, ammonia borane and other boron hydrides, ammonia, and alane etc.

Other practical storage methods being researched that focuses on storing hydrogen as a lightweight, compact energy carrier for mobile applications include;

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5 0
2 years ago
A 360. mg sample of aspirin, C9H8O4, (molar mass 180. g), is dissolved in enough water to produce 200. mL of solution. What is t
Gemiola [76]

Answer:

Molarity = 0.01 M

Explanation:

Molarity is used to measure the concentration of a solution. It will be same for the whole solution or a small amount of solution if the solution is homogeneous.

So, <u>Molarity of 200 mL of solution = Molarity of 50 mL of solution</u>

\mathbf{Molarity = \frac{number \ of \ moles \ of \ solute}{Volume \ of \ solution \ (in \ liters)}}

\mathbf{Moles = \frac{given \ mass \ of \ compound}{molar \ mass \ of \ compound}}

given mass of aspirin = 360 mg = 0.36 g

molar mass of aspirin = 180 g

Volume of solution = 200 mL = 0.2 L

\mathrm{Mole \ of \ Aspirin = \frac{0.36}{180} = \mathbf{0.002 \ moles}}

\mathrm{Molarity = \frac{0.002}{0.2} = \mathbf{0.01 \ M}}

Therefore, Molarity = 0.01 M

7 0
2 years ago
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