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Maru [420]
3 years ago
7

Suppose a student completes an experiment with an average value of 2.6 mL and a calculated standard deviation of 0.80 mL. What i

s the minimum value within a 1 SD range of the average
Chemistry
1 answer:
DaniilM [7]3 years ago
7 0

Answer:

Explanation:

1 standard deviation range will look like: [average - SD, average + SD]

Here the miximum value will be: average - SD = 2.6 - 0.80 = 1.80 ml

and the maximum value will be: average + SD = 2.6 + 0.80 = 3.40ml

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The cylinder of aluminum in class was approximately 13mm in circumference and 42mm in length. What would be it's approximate mas
Roman55 [17]

Answer:

Mass, m = 1.51 grams

Explanation:

It is given that,

The circumference of Aluminium cylinder, C = 13 mm = 1.3 cm

Length of the cylinder, h = 4.2 cm

We know that the density of the Aluminium is 2.7 g/cm³

Circumference, C = 2πr

r=\dfrac{C}{2\pi}\\\\r=\dfrac{1.3}{2\pi}\\\\r=0.206\ cm

Density is equal to mass per unit volume.

d=\dfrac{m}{V}

m is mass of the cylinder

V is the volume of the cylinder

V=\pi r^2h\\\\V=\dfrac{22}{7}\times0.206^2\times 4.2\\\\V=0.5601\ cm^3

So,

m=d\times V\\\\m=2.7\times 0.5601\\\\m=1.51\ g

So, the mass of the cylinder is 1.51 grams.

5 0
3 years ago
What is the name of the group 8 elements and what makes them special?
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Iron, Ruthenium, Osmium, and Hassium.

They're transition metals
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3 years ago
All redox reactions are combustion reactions.<br><br> True or False?
VladimirAG [237]

Answer:

the answer is false

Explanation:

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What is the universe made of? Astronomers face an embarrassing conundrum: they don't know what 95% of the universe is made of.
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Answer:

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How does an indicator differentiate between an acid and base?
Svet_ta [14]

Answer:

that is all I know sorry hope that may help you :)

Explanation:

Indicator is a substance which shows different colors in acidic and basic medium. Indicators can be natural (derived from natural sources) or artificial ( man-made) for example :

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