CHEMISTRY MIDDLE SCHOOL

In which location would the air most likely be at standard temperature and pressure? A. inside a car tire B. above a bowl of ice water C. outdoors on a summer day D. above a pot of boiling water E. at the top of a tall mountain

Answers

Answer 1
Answer:

The correct answer is option B, above a bowl of ice water.

Standard temperature is  zero degrees Celsius (°C)  or 32 degrees Fahrenheit (°F). Standard pressure is 760 mmHg or 1 atm.

Both the conditions of Standard temperature and standard pressure is basically the freezing point of pure water at sea level.

Thus the air above a bowl of ice water is at standard temperature and pressure
Answer 2
Answer:

Answer is B for Edmentum users

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Why Is It Important To Classify The Millions Of Species On Earth

Answers

Answer:

Why Is It Important To Classify The Millions Of Species On Earth?

The importance mainly is the Taxonomy

Explanation:

The importance mainly is the Taxonomy, which gives an order to living beings, the taxonomy facilitates the study and compression of the species on Earth. Also taxonomy gives the scientific names and classify by their kingdom, family and species, in addition to including their characteristics

One of the important teachings that the different ways of classifying give us have been the great diversity of living beings that inhabit the Earth.  

Even the most recent classifications are provisional, because new species are discovered every year. The main value of all classifications is that they have allowed us to know the different organisms that exist much better.
Because without classification there wouldn't be a way to decide what is what and which is which. Classification allows the justification of someone or something to have it's own. For ex : This monkey is red, and this monkey is blue. They have something different between them, they aren't just a "monkey" they are specified under what you can specify about them or what others specify about them. That is a Red Monkey, that is a Blue Monkey. And so forth.

You start with an equimolar mixture of the gases SO₂ and O₂ in a container. The SO₂ and O₂ react to completion to form SO₃. If the temperature after the reaction is 25°C and the pressure in the container is 1.65 atm, what is the density of the product gas mixture? Assume ideal behavior.

Answers

The density of the product gas mixture is 5.39 g/L

Explanation:

Given:

Temperature after the reaction = 25^0C

Pressure in the container = 1.65 atm

The ideal gas equation PV = nRT

To find: Density of the product gas mixture

Step 1:

Molarity (M) = P/(RT)

\[M=(P)/(R T)\]$M=\frac{1.65 \mathrm{atm}}{\left(0.08206 (L \cdot a t m)/(m o l . K)\right)(298.15 K)}$

M = 0.0674 mol/L

Step 2:

The product of the given reaction is SO_3. Its molar mass is

1S x 32.066 g/mol = 32.066 g/mol

3O x 16 g/mol = 48 g/mol

Adding both we get 80.066 g/mol

Therefore the density of the product gas mixture is 0.0674 \frac{{mol}}{L} * \frac{80.066 g}{1 \mathrm{mol}}

= 5.39 g/L

What is the volume, to the nearest whole cubic inch, of a cylinder with a height of 10 inches and a radius of 8 inches? Use Pi = 3.14 and round your answer to the whole number.cubic inches

Answers

Answer:

v=2010 inches^3

Explanation:

The volume of a cylinder can be found using:

v=\pi r^2h

We know the height is 10, the radius is 8, and we can substitute 3.14 in for pi

v=3.14(8^2)(10)

Solve the exponent first

v=3.14(64)(10)

v=3.14(640)

v=2009.6

To the nearest whole number:

v=2010 inches^3

READING CHECK1. What is always true about the
kinetic energy of a single particle
in a gas?

Answers

Gas particles are in constant motion, and any object in motion has kinetic energy (Ek). ... For example, in the collision of two molecules, one molecule may be deflected at a slightly higher speed and the other at a slightly lower speed, but the average kinetic energy does not change.
GIVE ME POINTSSSSSSSSSS

What is the same between mass and weight

Answers

Answer:

Mass is how much matter an object has. Weight is how much gravity an object is being acted upon.

Explanation:

The mass of an object will stay the same no matter where you place it. But if you were to place the object, in the moon for example, then the weight of the object would be less since there is less gravity on the moon.

Question 1 Is the following question true or false All of today's continents were part of one large land mass 225 million years ago Question 2 Is the following statement true or false The moving continents has had little impact on the distribution of species

Answers


Question 1 is true because it was called Pangea

Question 2 is false because it had a lot of impact on the distribution of species, before the moving continents animals could roam where ever they want but after the splitting of the continents the species were stuck in one place because water separated other continents and land species cant swim.
All of today's continents were part of one large land mass 225 million years ago - True



Is the following statement true or false The moving continents has had little impact on the distribution of species - False 
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