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Montano1993 [528]

3 years ago

5

After studying weather, Beto bought a simple weather station and put it up in his yard. He was especially interested in wind and

how it forms around Earth. Choose the correct words or phrases to complete the sentences.

1 answer:

Alex73 [517]3 years ago

8 0

Incomplete question. The remaining part reads;

Choose the correct words or phrases to complete the sentences.

Global winds occur due to

<u>1. Choose...</u>

a. solar currents

b. convection currents

c. sea breezes

d. uneven heating

over a large area and this forms

2. Choose...

a. solar currents

b. convection currents

c. sea breezes

d. uneven heating

caused by cool and warm air.

Answer:

<u>1. d. uneven heating</u>

<u>2. b. convection currents</u>

Explanation:

1. What Beto should know is that as the earth moves and rotates around the sun, some parts of the Earth receive more sunlight and others less, which then leads to uneven heating over a large area of the earth.

2. This uneven heat then forms a convection current containing varying patterns of air spreading to various parts of the globe.

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How can we use the mole to convert between the mass and the volume of a substance?

aleksandr82 [10.1K]

Answer:

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3 years ago

What is the percent-by-mass concentration of acetic acid (CH3COOH) in a vinegar solution that contains 51.80 g acetic acid in a

Semenov [28]

Answer : The percent-by-mass concentration of acetic acid is, 5.15 %

Explanation : Given,

Mass of acetic acid = 51.80 g

Density of solution = 1.005 g/ml

Volume of solution = 1.000 L = 1000 ml (1 L = 1000 ml)

First we have to calculate the mass of solution.

$\text{Mass of solution}=\text{Density of solution}\times \text{Volume of solution}$

$\text{Mass of solution}=1.005g/ml\times 1000ml=1005g$

Now we have to calculate the percent-by-mass concentration of acetic acid.

$\% \text{ by mass of acetic acid}=\frac{\text{Mass of acetic acid}}{\text{Mass of solution}}\times 100$

Now put all the given values in this formula, we get:

$\% \text{ by mass of acetic acid}=\frac{51.80g}{1005g}\times 100=5.15\%$

Therefore, the percent-by-mass concentration of acetic acid is, 5.15 %

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