CHEMISTRY HIGH SCHOOL

A strong acid with a concentration of 0.01 Mol/L would have a pH of __________.2

1

3

4

Answers

Answer 1
Answer:

Answer:

2

Explanation:

the pH of the strong acid solution will be

pH = -log[H+] = -log[0.01] =  2

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Sarah is testing how quickly saltwater freezes. She adds saltwater to one ice tray and plain water to another ice tray. She places each tray in the freezer and records the time when each one starts to freeze. What treament did she do?. . A.Salt. B.Water. C.Freezer. D.Ice tray

Answers

The correct answer is A. Salt

That is because all of the conditions and the ingredients are the same. The one thing that makes the difference is the salt, which if removed, would cause everything to be the same. If she knows at how much regular water freezes, she can easily see how salt impacted the difference.

Answer:

salt

Explanation:

Which is the correct name for the comound N2O3

Answers

Dinitrogen trioxide is the compound N2O3. :)

Answer:

dinitrogen trioxide

Explanation:

It's a covalent compound. Using the naming convention of the IUPAC and prefixes.

How many moles of compound are there in 3.82 g of sulfur dioxide

Answers

Molar mass SO₂ =  64.066 g/mol

number of moles = mass of solte / molar mass

n = 3.82 / 64.066

n = 0.0596 moles

hope this helps!

A beaker contains three solids: flour, sugar, and baking soda. Whichdescribes the contents of the beaker? *

Answers

Answer: It is a Heterogeneous mixture.

Final answer:

The beaker contains a mixture of three solids, namely flour, sugar, and baking soda. These components retain their properties in the mixture and are not chemically combined.

Explanation:

The contents of the beaker can be described as a mixture. A mixture is a combination of two or more substances that are not chemically combined. In this case, the beaker contains flour, sugar, and baking soda. These are solid substances that maintain their own properties in the mixture. They're simply combined in the same space (the beaker), but they are not interacting on a molecular level to form a new substance.

Learn more about mixtures here:

brainly.com/question/12160179

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Choose the pieces of evidence that supported the existence of Pangaea and continental drift theory.o Fossilized plants and animals of the same species found on separate continents.
o Geological features, such as mountain ranges, that align on matching coasts of different continents.
o Island arc ranges are still connected under the Atlantic Ocean.
o Antarctica's glacial features are similar to the Arctic's.

Answers

Pangaea is scientifically known as the original whole mass of land that eventually was divided into separate mass entities called continents as a result to natural phenomena like earthquakes. This is more explained inthe continental drift theory. After rigorous collection of evidences, scientists noticed that fossilized plants and animals of the same species, also with the coastlines match on different continents. The answers are the first and second choices (A and B).

Fossilized plants and animals of the same species found on separate continents.

Geological features, such as mountain ranges, that align on matching coasts of different continents.

How many grams of oxygen would be produced by the electrolysis of 72.0 grams of water ? 2H2O--> O2+2H2 (Must be made to fit into the chart underneath #8)

Answers

molar mass H₂O = 18.0 g/mol   and O₂ = 32.0 g/mol

2 H₂O --------> O₂ + H₂

(2* 18.0 g ) H₂O ---------->  32 g O₂
72.0 g H₂O ----------------> ?

mass of O₂ = 72.0 * 32 / 36

mass of O₂ = 2304 / 36

= 64 g of O₂

hope this helps!
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