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Pachacha [2.7K]
3 years ago
7

Which is characteristic of reliable experimental results?

Chemistry
1 answer:
storchak [24]3 years ago
7 0

Answer:

B. The data were reproduced by other scientists using the same experimental methods.  

Explanation:

One of the features of reliable experimental results is their reproducibility — other scientists must be able to produce them.  

A. is wrong. An experiment that is designed to prove a hypothesis is biased.

C. is wrong. A conclusion based on a single experiment is suggestive but not conclusive. It takes a number of experiments to provide a strong statistical relation between the variables.

D. is wrong.  The data may support a conclusion that the they reached using logic and critical thinking, but there may still be a flaw in the thinking, which other scientists can point out.  

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TRUE or FALSE: Any measurement that has been cubed is volume.
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True

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4 years ago
500 mL of He at 300 K is heated to 450 K. Find V2
ruslelena [56]

Answer:

V2 = 0.75 L

Explanation:

assumin ideal gas:

  • PV = RTn

∴ T1 = 300K

∴ V1 = 0.500 L

∴ T2 = 450 K

⇒ V2 = ?

assuming P, n constant:

⇒ PV1 = RT1n

⇒ V1/T1 = Rn/P = K..........(1)

⇒ V2/T2 = RN/P = K..........(2)

(1) = (2):

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⇒ V2 = (0.500 L/300 K)(450 K)

⇒ V2 = 0.75 L

8 0
3 years ago
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