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3 years ago

Please help! I don't understand, I asked for help but no one knows the answer.

Chemistry

2 answers:

faltersainse [42]3 years ago

3 0

I've put in some of the answers.
hope this helps :)

FinnZ [79.3K]3 years ago

3 0

Answer:

You will find the answer in the attach.

Explanation:

The diagram describes the distribution or circulation of winds. They go from sites of high pressure (H) to sites of low pressure (L).

The terms cold and warm front refers to winds fronts of low or high temperature. When a cold front reaches a warm one, resulting in an occlusion (occluted front).

A strong wind front can be acompanied by clouds (strong winds very cloudy) or not (strong winds cloudless).

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Sergio [31]

Answer:

Explanation:

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3 years ago

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When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 14.4 g of carbon were burned in the presence of

Yanka [14]

Answer:

Mass of carbon dioxide produced = 52.8 g

Explanation:

Given data:

Mass of carbon react = 14.4 g

Mass of oxygen = 56.5 g

Mass of oxygen left = 18.1 g

Mass of carbon dioxide produced = ?

Solution:

C + O₂ → CO₂

Number of moles of C:

Number of moles = mass/ molar mass

Number of moles = 14.4 g/ 12 g/mol

Number of moles = 1.2 mol

18.1 g of oxygen left it means carbon is limiting reactant.

Now we will compare the moles of C with CO₂.

C : CO₂

1 : 1

1.2 : 1.2

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 1.2 mol × 44 g/mol

Mass = 52.8 g

8 0

3 years ago

Agustina was standing on the edge of a cliff of unknown height holding a bowling ball. She wanted to find the height of the clif

nlexa [21]

Answer:

433 m

Explanation:

Since the fall represents motion under gravity, we use the equation

s = ut - 1/2gt² where s = height of cliff or distance bowling ball falls through, u = initial velocity of bowling ball = 0 m/s(since it starts from rest), t = time = 9.4 s and g = acceleration due to gravity = -9.8 m/s².

So, substituting the values of the variables into the equation, we have

s = 0 m/s × 9.4 s - 1/2 × 9.8 m/s² × (9.4 s)²

s = 0 m - 1/2 × -9.8 m/s² × 88.36 s²

s = 1/2(865.928 m)

s = 432.964

s ≅ 433 m

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3 years ago

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Answer:

1. The graph where x axis and y axis are present is called coordinate.

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3 years ago

Why is it useful to know the background level of extinction?

lawyer [7]

Answer:

NOAA and FWS are required by law to compare background rates to current rates.

Explanation:

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