CHEMISTRY HIGH SCHOOL

All elements have a unique atomic emission spectrum. In which of the following scenarios would this fact be most useful?A. when trying to determine a star's chemical composition
B. when trying to determine how old an artifact is
C. when trying to measure the speed of sound

Answers

Answer 1
Answer: Optrion A: when trying to determine a star's chemical composition.

Because unique atomic emission spectrum, analyzing the  emission spectrum you can tell the chemical composition.

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solution of silver chloride at constant temperature: AgCl(s) ↔ Ag+(aq) + Cl-(aq) As NaCl(s) is dissolved in the solution, the concentration of the Ag+ ions in the solution 1. decreases, and the concentration of Cl- ions increases 2. decreases, and the concentration of Cl- ions remains the same 3. increases, and the concentration of Cl- ions increases 4. increases, and the concentration of Cl- ions remains the same

Is a strong acid
a. NaC₂H₃O₂
b. HC₂H₃O₂
c. KCl
d. NH₃
e. HCl

Answers

E. HCI

Source:
The Internet

What physical state of matter is associated with the strongest attractive forces between particles (molecules, ions, or atoms)?

Answers

The answer is solid.

Solid, physical state of matter is associated with the strongest attractive forces between particles (molecules, ions, or atoms).

Among the other states of matter that is liquid, gas; solid is the one that is having strongest attractive forces between particles (molecules, ions, or atoms).

which equation listed matches the following word equation? when lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate and water are formed.

Answers

When lithium hydroxide pellets are added to a solution ofsulfuric acid, lithium sulfate and water are formed. The balanced chemical reaction is 2LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O.

What is balanced chemical reaction ?

A chemical equation is said to be balanced if the quantity of each kind of atom in the reaction is the same on both the reactant and product sides. In a balanced chemical equation, the mass and the change are both equal.

Following the rule of conservation of mass requires that a chemical equation be balanced. The balance of a chemical equation is disregarded by the rule of conservation of mass. The law states that a chemical process cannot produce or destroy matter.

When lithium hydroxide pellets are added to a solution of sulfuric acid, lithium sulfate and water are produced.

Thus, The balanced chemical reaction is 2LiOH + H₂SO₄ → Li₂SO₄ + 2H₂O.

To learn more about the balancedchemical reaction, follow the link;

brainly.com/question/30230799

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LiOH + H2SO4 → Li2SO4 + H2O

Balance the equation:

Reactants:
Li = 1 • 2
O = 1 • 2 + 4
H = 1 • 2+ 2
S = 1

Products:
Li = 2
O = 4 + 1 • 2
H = 2 • 2
S = 1

Balanced Equation:

2LiOH + H2SO4 → Li2SO4 + 2H2O

The pigment which determines skin color is .

Answers

The pigment which determines skin color is Melanin
melanin , as far as I know 

The solubility of KCLO3 (s) in water increases as the.....

Answers

The solubility of potassium chlorate (KCLO3) increases as the temperature increase. The increase in temperature is only applicable for most ionic and molecular solids. Since potassium chlorate is an ionic compound, this rule applies to it. The solubility however of other substance such as NaCl doesn’t change when you increase its temperature. 

The length of time required for half of the radioactive atoms in a sample to decay is its. A. half-life. . B. relative date. . C. radioactive date. . D. period.

Answers

The length of time required for half of the radioactive atoms in a sample to decay is its half-life. The correct option among all the options that are given in the question is the first option or option "A". The other choices are incorrect and can be easily neglected. I hope that this is the answer that has come to your help.
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