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3 years ago

Location A and B are adjacent. Location A is at a higher temperature than Location B. What will most likely happen?

Chemistry

2 answers:

Alex777 [14]3 years ago

8 0

Answer: The answer is A

Explanation:

Anastasy [175]3 years ago

3 0

Answer:

Option (A)

Explanation:

The air molecules are densely packed near the surface of the earth and are scattered in the upper atmosphere. It is because of this, the air pressure and temperature near the earth's surface is higher than it is at higher altitudes.

In the given data, A and B are two nearby places, where location A has a higher temperature and B has a low temperature.

This means that A has high pressure, as the air pressure and temperature are directly proportional to one another and as height increases, temperature and pressure simultaneously decrease.

So, it can be concluded that location A experiences a high temperature and high-pressure condition because of its low elevation (height).

Whereas, location B experiences low pressure and low-temperature condition because of its higher elevation.

Thus, both the location A and B will experience different atmospheric pressure.

Hence, the correct answer is option (A).

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Jeffrey is on his skateboard and starts skating down a ramp. Ten seconds later he is travelling at

AfilCa [17]

Answer: 2m/s^2

Explanation:

Velocity of skateboard = 20.0 m/s.

Time taken = Ten seconds (10 s)

Acceleration = ?

Recall that acceleration is the change in velocity of a body per unit time.

i.e Acceleration = (velocity / Time)

Acceleration = 20.0m/s ➗ 10 s

Acceleration = 2m/s^2

Thus, Jeffrey acceleration was 2m/s^2

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3 years ago

Which of the following statements about subatomic particles best characterizes electrons? A positive charge, light, circling the

schepotkina [342]

Every electron carries one elementary negative charge. Concerning mass,
it takes roughly 1,840 electrons to make enough mass for 1 proton or 1 neutron.
Electrons don't necessarily have to stay connected to an atom, but when they do,
they circle the nucleus.

So you should select (C): ==> Negative, ==> light, ==> circling the nucleus.

7 0

3 years ago

Read 2 more answers

Water freezing is an exothermic process? tue or false

Aliun [14]

Answer:

Explanation:

When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.

So the correct answer is True

8 0

2 years ago

• Briefly discuss the cause of errors in the measurements

rewona [7]

(also called Observational Error) is the difference between a measured quantity and its true value. It includes random error

4 0

3 years ago

Calculate the number of Li atoms in 7.8 mol of Li.

Gwar [14]

<h3>Answer:</h3>

4.7 × 10²⁴ atoms Li

<h3>General Formulas and Concepts:</h3>

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right<u> </u>

<u>Chemistry</u>

<u>Atomic Structure</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Stoichiometry</u>

Using Dimensional Analysis

<h3>Explanation:</h3>

<u>Step 1: Define</u>

7.8 mol Li

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

Set up: $\displaystyle 7.8 \ mol \ Li(\frac{6.022 \cdot 10^{23} \ atoms \ Li}{1 \ mol \ Li})$
Multiply/Divide: $\displaystyle 4.69716 \cdot 10^{24} \ atoms \ Li$

<u>Step 4: Check</u>

<em>We are told to round to 2 sig figs. Follow sig fig rules and round.</em>

4.69716 × 10²⁴ atoms Li ≈ 4.7 × 10²⁴ atoms Li

6 0

2 years ago