CHEMISTRY HIGH SCHOOL

Which can be determined using a chemical formula?a. the elements that make up the compound
b. the substances that make up a solution
c. the pH of a solution
d. the boiling point of a compound

Answers

Answer 1
Answer: A chemical formula can be directly used to find out the elements that make up the compound. Also, since each chemical compound has a unique boiling point, that can also be determined by just knowing the chemical formula. The answers are:

a. the elements that make up the compound
d. the boiling point of a compound
Answer 2
Answer:

Answer: a. the elements that make up the compound

Explanation:

Chemical formulas are the symbolic representation of the elements contained in a compound along with their relative proportions.

For example: The chemical formula for water is H_2o which shows that it is formed by combination of hydrogen and oxygen in the ratio of 2: 1 respectively.

pH of the solution is determined by litmus paper, pH paper or pH meter.

Boiling point is the temperature at which atmospheric pressure becomes equal to the atmospheric pressure.

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When dissolved in water, an Arrhenius base yields(1) hydrogen ions (2) hydronium ions(3) hydroxide ions (4) oxide ions

Answers

Arrhenius bases yield hydroxide ions when in solution.  Arrhenius acids on the other hand yield hydrogen ions (which is sometimes called hydronium since the H⁺ turns to H₃O⁺ in water).

I hope this helps.  Let me know if anything is unclear.

Oceans, lakes, ice caps, streams, and clouds are considered to part of what?A. Biosphere
B. Athenosphere
C. Hydrosphere
D. Geosphere

Answers

Hydrosphere is the correct option.Oceans, lakes, icecaps, streams and clouds are considered to be part of hydrosphere. The correctoption in regards to the given question is option “C”.Hydrosphere includes the total mass of water on the surface,underground or over the surface of earth. About 75% of the earth’s surface arecovered by oceans and so a huge part of our planet is covered in water and so hydrosphereis an important aspect. Hope I have answered your question as per your asking.
Answer=C

The hydrosphere is the total amount of water on the planet, encompassing water underground, on the surface of the planet, and in the air. This would include oceans, lakes, ice caps, streams and clouds.

Which sample of matter is a mixture?
(1) Br2(ℓ) (3) KBr(s)
(2) K(s) (4) KBr(aq)

Answers

The correct answer is option 4. KBr(aq) is an example of a mixture. The symbol (aq) means that the substance is in aqueous form. Thus, potassium bromide is dissolved in water. Mixture is defined as a system which contains two or more substances mixed but not combined chemically. The two substances here are KBr and water.

Which elements form are ionic compounds check all the boxes that apply

Answers

Any type of metal may join with a non-metal, such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium, to create ionic compounds.

What is an ionic compound ?

A chemical compound known as an ionic compound is one that contains ions bound together by the electrostatic forces known as ionic bonding. Despite having both positively and negatively charged ions, or cations and anions, the molecule is generally neutral.

In most cases, ionic compounds are created between metal and nonmetal components. For instance, the ionic compound calcium chloride is made up of the metal calcium (Ca) and the nonmetal chlorine (Cl) (CaCl2).

A nonmetal and a metal can create an ionic bond, which is the attraction between two ions with opposing charges.

Thus, metal are joined with a non-metal, such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium, to create ionic compounds.

To learn more about ionic compound, follow the link;

brainly.com/question/9167977

#SPJ5

Answer/Explanation:

Aluminum and oxygen

Fluorine and oxygen

Ionic compounds are formed when any type of metal is combined with a non-metal such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium.

(any)metal + nonmetal = ionic compound

3.50 L of 0.200 M hydrochloric acid is prepared using 12.0 M HCl(aq) stock solution to which water is added. What volume of the stock solution
is required?

a. 7.00 mL
b. 8.40 mL
c. 17.1 mL
d. 58.3 mL

Answers

Answer:

Explanation:

To determine the volume of the stock solution required to prepare 3.50 L of 0.200 M hydro chloric acid, we can use the formula:

M1V1 = M2V2

where:

M1 = concentration of the stock solution

V1 = volume of the stock solution

M2 = desired concentration of the diluted solution

V2 = desired volume of the diluted solution

Let's substitute the given values into the formula:

M1 = 12.0 M

V1 = ?

M2 = 0.200 M

V2 = 3.50 L

Now we can solve for V1:

12.0 M x V1 = 0.200 M x 3.50 L

V1 = (0.200 M x 3.50 L) / 12.0 M

V1 = 0.0583 L

To convert the volume from liters to milliliters, we multiply by 1000:

V1 = 0.0583 L x 1000 mL/L

V1 = 58.3 mL

Therefore, the volume of the stock solution required is 58.3 mL.

So, the correct answer is d. 58.3 mL.

To determine the volume of the stock solution required, we can use the formula:

Molarity1 x Volume1 = Molarity2 x Volume2

Where Molarity1 and Volume1 represent the initial concentration and volume, and Molarity2 and Volume2 represent the final concentration and volume.

Given:

Molarity1 = 12.0 M

Volume1 = ?

Molarity2 = 0.200 M

Volume2 = 3.50 L

Plugging in the values into the formula, we have:

12.0 M x Volume1 = 0.200 M x 3.50 L

Simplifying the equation, we can solve for Volume1:

Volume1 = (0.200 M x 3.50 L) / 12.0 M

Volume1 ≈ 0.0583 L

To convert this to milliliters, we multiply by 1000:

Volume1 ≈ 58.3 mL

Therefore, the volume of the stock solution required is approximately 58.3 mL.

The closest answer option is d. 58.3 mL.

I hope this explanation helps! Let me know if you have any further questions.

A student blows up a ballon and then places it in a very cold freezer the ballon shrunk after hours why!?

Answers

Temperature is directly related to the speed of the molecules such that as the temperature decreases, so does the speed of the molecules. When the balloon was placed in the freezer, the temperature plummeted and so the molecules moved less. Due to this lack of movement, less space was used by the balloon so it shrunk.
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