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3 years ago

A student knows the width and

1 answer:

3 0

Length; volume of a rectangular prism is lwh. If you already know the width and height you still need to find the length.

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In France, grapes are 1.75 Euros per kilogram. What is the cost of grapes in dollars per pound if the exchange rate is 1.36 doll

Jet001 [13]

You want to convert Euros / kg to Dollars / pound

So you'll have to multiply the price (Euros / kg) by the exchange rate (Dollars / Euro) to get a number that has units of Dollars / kg.

Euros Dollars Dollars

------- x --------- = --------

kg Euro kg

Then you have to multiply the number of kg in a pound (which has units of kg / pound) to get a number in units of Dollars / pound. This number is 2.2.

Dollars kg Dollars

-------- x -------- = --------

kg pound pound

So the answer would be 1.75 * 1.36 / 2.2 = 1.08 dollars / pound.

3 0

3 years ago

Which of the following statements about the procedure for distillation is false?

madreJ [45]

Answer: B) You are to continue heating the round-bottom flask until all liquid has been distilled.

Explanation:

Fractional distillation refers to a method that's useful for the separation of mixtures of solvents whereby there is less than 40°C in the boiling point difference.

With regards to the options given, the incorrect statement about the procedure for distillation is that you are to continue heating the round-bottom flask until all liquid has been distilled. This isn't correct.

3 0

3 years ago

What acid is car batteries?

Romashka-Z-Leto [24]

Answer:

sulfuric acid

Explanation:

When a battery is being discharged, the sulfuric acid in the electrolyte is being depleted so that the electrolyte more closely resembles water.

5 0

4 years ago

Read 2 more answers

How many grams of oxygen are required to burn 13.5 g of acetylene

Vinil7 [7]

Answer:

41.54 grams of oxygen are required to burn 13.5 g of acetylene

Explanation:

The balanced reaction is:

2 C₂H₂ + 5 O₂ → 4 CO₂ + 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₂H₂: 2 moles
O₂: 5 moles
CO₂: 4 moles
H₂O: 2 moles

Being the molar mass of the compounds:

C₂H₂: 26 g/mole
O₂: 32 g/mole
CO₂: 44 g/mole
H₂O: 18 g/mole

By reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

C₂H₂: 2 moles* 26 g/mole= 52 grams
O₂: 5 moles* 32 g/mole= 160 grams
CO₂: 4 moles* 44 g/mole= 176 grams
H₂O: 2 moles* 18 g/mole= 36 grams

You can apply the following rule of three: if by stoichiometry 52 grams of acetylene react with 160 grams of oxygen, 13.5 grams of acetylene react with how much mass of oxygen?

$mass of oxygen=\frac{13.5 grams of acetylene*160 grams of oxygen}{52 grams of acetylene}$

mass of oxygen= 41.54 grams

41.54 grams of oxygen are required to burn 13.5 g of acetylene

8 0

3 years ago

How many grams are in 4.63 ×1024 molecules of CCl4

Lynna [10]

Answer:

m =1,182.8g

Explanation:

there you go

4 0

2 years ago