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denpristay [2]
3 years ago
12

The exoskeleton of a housefly is made up of

Chemistry
2 answers:
OverLord2011 [107]3 years ago
5 0

Answer:

Chitin

Explanation:

A fly's main body is made of a thorax and an abdomen. These parts are covered by a hard exoskeleton made of a bony substance called chitin.

anzhelika [568]3 years ago
3 0
Chitin is what it’s made up of!
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the polio virus is 25 nanometers in diameter. How many would fit across the head of a pin 2 millimeters in diameter
IrinaVladis [17]
2mm=2,000,000 nm
2,000,000/25=80,000
The answer is 80,000 polio viruses
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2 years ago
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Which of the following is required for photosynthesis to take place?
Nonamiya [84]

Answer: Answer is D, water

Explanation: Water is the correct option among all and other options like sugar, oxygen and ATP are the products of the photosynthesis. Water is required along with other reactants to produce these products.

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2 years ago
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Which term is used to describe the reactant that is used up completely and controls the amount of product that can be produced d
givi [52]

Answer: Option (c) is the correct answer.

Explanation:

A limiting reagent is defined as a reagent that completely gets consumed in a chemical reaction. A limiting reagent limits the formation of products.

For example, we have given 5 mol of A and the reaction is 2A + 4B \rightarrow 2AB

Whereas when 4 mol B will react with 2 mol of A. Hence, 8 mol of B will react with 4 mol A as follows.

                        \frac{2}{4} \times 8 = 4 mol

As, the given moles of A is more than the required moles. Thus, it is considered as an excess reagent.

Hence, B is a limiting reagent because it limits the formation of products.

Thus, we can conclude that limiting reactant is the term used to describe the reactant that is used up completely and controls the amount of product that can be produced during a chemical reaction.  

6 0
3 years ago
At 1.3 atm and 23 degrees Celsius, 12.5 grams of a gas occupies a volume of 8.2 liters. What is the molar mass (grams/mole) of t
klemol [59]

Answer:

0.44 moles Molar Mass = 28.496

Explanation:

1.3(8.2)=n(0.0821)(23+273)

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12.5/0.43865

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<span>these very light gases from escaping into space.

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