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telo118 [61]
1 year ago
7

You are using a ruler to measure the width of a test tube. The edge of the test tube is between 3 cm and 4 cm marks. if centimet

ers are the smallest increments in the ruler, what measurement reflects the accuracy of the ruler
A. 3.6 cm
B. 3.65 cm
C. 4 cm
D. 3 cm
Chemistry
1 answer:
Arada [10]1 year ago
5 0

Answer:

A) 3.6 cm

Explanation:

Accuracy comes down to how precisely you can read the length on a given scale. Here since the smallest increment is centimeter, we can go only one decimal beyond to estimate. This is because you can usually estimate to only one decimal place beyond the closest marks on any measuring.

So, the answer should be 3.6 cm.

Here's a document that explains it well: https://www.auburn.wednet.edu/cms/lib03/WA01001938/Centricity/Domain/1360/1_Uncertainty.pdf

Hope that's right!

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I believe the correct answer from the choices listed above is the second option. The expression (6.0 x 104) (3.1 x 10-1) is equal to 1.9 x 10^4. We only have two significant figures from the starting expression that is why we rounded of the product from 1.86 to 1.9.
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How do the circulatory system and respiratory system interact and work together?
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2 years ago
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If fluorine 20 undergoes beta decay , what will it become ?
e-lub [12.9K]
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7 0
3 years ago
Which of the following would make a solution?
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2 years ago
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You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you
meriva

Answer:

0.8 mL of protein solution, 9.2 mL of water

Explanation:

The dilution equation can be used to relate the concentration C₁ and volume V₁ of the stock/undiluted solution to the concentration C₂ and volume V₂ of the diluted solution:

C₁V₁ = C₂V₂

We would like to calculate the value for V₁, the volume of the inital solution that we need to dilute to make the required solution.

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(10 mL - 0.8 mL) = 9.2 mL

6 0
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