CHEMISTRY HIGH SCHOOL

In science what is acid
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Answers

Answer 1
Answer: In science, an acid is a chemical substance that has a pH value less than 7. It is characterized by the presence of hydrogen ions (H+) when dissolved in water. Acids can donate protons or accept electrons during chemical reactions. They have sour taste, can corrode certain metals, and can turn blue litmus paper red.

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A chemist who is performing this reaction starts with 160.1 g of NH4NO3. The molar mass of NH4NO3 is 80.03 g/mol; the molar mass of water (H2O) is 18.01 g/mol. What mass, in grams, of H2O is produced?
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When electrons absorb energy they are able toa. move from exited states down to their ground states.
b. move from their ground states up to excited states.
c. attach to the nucleus.
d. form a bond with the nearest proton.

Answers

When electrons absorb energy they are able to move from their ground states up to excited states. The answer is letter B. an example of this is when you light a match. The molecules of the matchstick are in its ground state. When you flick it on the ground or anything hard, it causes its molecules to move into the excited state and thus causing fire.

Although it seemed quite important in 1788, Amendment _______, barring the quartering of soldiers in private homes, is outdated today

Answers

From what I've read its 1788 Amendment IV
It's Amendment number 3 because Amendment 4 is you have to have warrant to be able to search someones house ect.

What is the empirical formula for a compound if a sample contains 3.72 g of P and 21.28 g of Cl?

Answers

3.72/30.97=0.120/0.120=1
21.28/35.45=0.600/0.120=5

PCl5

Answer:

PCI5

Explanation:

What are some pollutants that cause acid rain?

Answers

oil left from cras. carbon monoxcide, 

Write a balanced equation for each of the following reactions:the reaction of solid lithium with nitrogen to form solid lithium nitride.
the reaction between aqueous solutions of cobalt(III) nitrate and sodium hydroxide to form aqueous sodium nitrate and solid cobalt(III) hydroxide.
the reaction between solid zinc and aqueous hydrochloric acid in a single replacement reaction.
classify the reactions in (a) and (b).

Answers

Synthesis Reaction

6Li(s) + N₂(g) ⇒ 2Li₃N(s)

Double Replacement Reaction

Co(NO₃)₃(aq) + 3NaOH(aq) ⇒ 3NaNO₃(aq) + Co(OH)₃(s)

Zn(s) + 2HCl(aq) ⇒ ZnCl₂(aq) + H₂(g)

What is double replacement reaction?

  • A double-displacement reaction has the general formula AB + CD = AD + BC. Double-displacement reactions include the following examples: Ammonium Chloride, a salt, and sodium hydroxide, a base, combine to produce sodium chloride, hydrochloric acid, and water. In a double replacement process, the atoms of two compounds are switched, creating two new molecules.
  • Metals always replace metals, and nonmetals always replace nonmetals in single replacement processes.
  • Precipitates are frequently created by double replacement reactions when insoluble chemicals are created.
  • Checking to see if the cations exchanged anions with one another is the simplest technique to determine whether a reaction is a double displacement.
  • If the states of matter are mentioned, another indicator to look for is the production of a single solid product and watery reactants (since the reaction typically generates a precipitate)

To learn more about double replacement reaction, refer

brainly.com/question/23918356

#SPJ2
6Li(s) + N₂(g) ⇒ 2Li₃N(s) Synthesis Reaction

Co(NO₃)₃(aq) + 3NaOH(aq) ⇒ 3NaNO₃(aq) + Co(OH)₃(s) Double Replacement Reaction

Zn(s) + 2HCl(aq) ⇒ ZnCl₂(aq) + H₂(g)

What is work?O A. Force times an object's displacement
B. The distance an object moves over time
C. The time it takes an object to move a certain distance
D. The force that distance makes
SUBMIT

Answers

Answer:

A:force times an object displacement

Explanation:
Answer Force time an object displacement explanation: Search Results
Featured snippet from the web
A force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. ... Work transfers energy from one place to another, or one form to another. The SI unit of work is the joule (J).
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