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Vesnalui [34]
3 years ago
9

State the formula for finding the volume of a cylinder Will give brainlist!!!

Chemistry
2 answers:
uranmaximum [27]3 years ago
5 0
Volume of a cylinder: V= pi (r)^2(h)
ValentinkaMS [17]3 years ago
4 0
Volume of s cylinder= pi r^2 h
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what kind of evidence indicates a chemical change ?... a physical change? you may use examples to show softened.
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Some things that can indicate a chemical change are change of odor, change of color, change in temperature or energy, such as the production or loss of heat. An example could be the rusting of metal, there would be a color change of going from a shiny silver to a dirty, splotchy red color. Some things that indicate a physical change are change of appearance like change of shape, etc. It can also be like a change between a solid to liquid to gas. For example, the cutting of a piece of paper.
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3 years ago
Which of the following statements explains which trial has a lower concentration of the reactant? (5 points) Trial 1, because th
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Answer:

A)Trial 1 because the average rate of reaction is lower.

Explanation:

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3 years ago
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Which is a single ringed nitrogeo base?<br><br> A)adenine<br> B)guanine<br> C)thymine<br> D)ribose
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A single ringed nitrogeo base is thymine (C)

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3 years ago
During the chemical reaction given below 21.71 grams of each reagent were allowed to react. Determine how many grams of the exce
swat32

Answer: 16.32 g of O_2 as excess reagent are left.

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}    

\text{Moles of} SO_2=\frac{21.71g}{64g/mol}=0.34mol

\text{Moles of} O_2=\frac{21.71g}{32g/mol}=0.68mol

2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)  

According to stoichiometry :

2 moles of SO_2 require = 1 mole of O_2

Thus 0.34 moles of SO_2 will require=\frac{1}{2}\times 0.34=0.17moles  of O_2

Thus SO_2 is the limiting reagent as it limits the formation of product and O_2 is the excess reagent.

Moles of O_2 left = (0.68-0.17) mol = 0.51 mol

Mass of O_2=moles\times {\text {Molar mass}}=0.51moles\times 32g/mol=16.32g

Thus 16.32 g of O_2 as excess reagent are left.

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2 years ago
What should you do during a titration when you notice the indicator start to indicate the approach of the equilibrium point? Add
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B. Add the second reactant slower.

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2 years ago
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