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ra1l [238]
4 years ago
6

Which of the following occurs when a cool air mass meets and replaces a warm air mass

Chemistry
1 answer:
Schach [20]4 years ago
8 0
Hey Everyone!! I just have to say i just took the test. So on my first attempt, these were the answers:

1- Which of the following occurs when a cool air mass meets and replaces a warm air mass?
Answer: Cold Front

2-<span>When flying in an airplane, you are most likely in which layer of the atmosphere?
</span>Answer: Stratosphere

3- <span>A _________ is a quick-moving ribbon of air that moves from west to east high in the atmosphere. this air current constantly bends and dips down to move weather systems around.
</span>Answer: Jet Stream

4- Within the atmosphere, as altitude increases,<span>Answer: Air pressure decreases

5- </span>When warm air moves over cold air, a warm front forms. The warm air tends to rise along a gentle slope above the cold air and forms layers of clouds.

Given this information, which of the following cloud types and weather conditions would most likely result from an incoming warm front?

Answer: ((I acctually messed up on this one, but i can tell you, IT IS NOT cumulonimbus clouds and thunderstorms.))


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\huge\pink{Answer}

0.0006 in scientific notation is 6 × 10-4

<h2>Step by step Explanation:</h2>

All numbers in scientific notation or standard form are written in the form

m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.

To convert 0.0006 into scientific notation, follow these steps:

Move the decimal 4 times to right in the number so that the resulting number, m = 6, is greater than or equal to 1 but less than 10

Since we moved the decimal to the right the exponent n is negative

n = -4

Write in the scientific notation form m × 10n

= 6 × 10-4

Therefore,

6 × 10-4 is the scientific notation form of 0.0006 number and 6e-4 is the scientific e-notation form for 0.0006

<h2>HOPE IT HELPS ☺️</h2>
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3 years ago
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0.475 g H, 7.557 gS, 15.107 g O. Express your answer as a chemical formula.
max2010maxim [7]

Answer:

H₂SO₄

Explanation:

We have a compound formed by 0.475 g H, 7.557 g S, 15.107 g O. In order to determine the empirical formula, we have to follow a series of steps.

Step 1: Calculate the total mass of the compound

Total mass = mass H + mass S + mass O = 0.475 g + 7.557 g + 15.107 g

Total mass = 23.139 g

Step 2: Determine the percent composition.

H: (0.475g/23.139g) × 100% = 2.05%

S: (7.557g/23.139g) × 100% = 32.66%

O: (15.107g/23.139g) × 100% = 65.29%

Step 3: Divide each percentage by the atomic mass of the element

H: 2.05/1.01 = 2.03

S: 32.66/32.07 = 1.018

O: 65.29/16.00 = 4.081

Step 4: Divide all the numbers by the smallest one

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S: 1.018/1.018 = 1

O: 4.081/1.018 ≈ 4

The empirical formula of the compound is H₂SO₄.

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What do you think happens to the air in the collid when ice cream melts ?
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When the ice cream melts, the air bubbles are <em>no longer trapped</em>. They just escape into the atmosphere.

If you re-freeze the melted ice cream, its volume will be much less than the original.

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