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hjlf
2 years ago
8

Plz draw a periodic table with all its information​

Chemistry
2 answers:
nikdorinn [45]2 years ago
8 0

Answer:

plz following me ❤❤...........,...,.,.

BartSMP [9]2 years ago
6 0

Answer:

Explanation:

Hope this helps u!!

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which best describes an element? - a pure substance - a type of a mixture - a pure compound - an impure substance
Nikitich [7]
An element is a pure substance which means it cannot be broken down by any means.
7 0
3 years ago
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A state of equilibrium can exist when a piece of copper metal is placed in a solution of copper(ii) sulfate. outline the charact
ankoles [38]

Answer;

-Macroscopic properties remain constant

-Concentrations remain constant

-No change to copper solution seen;

-Rate of reverse/backwards reaction = rate of forward reaction;

Explanation;

In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.

-It is a a condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they are formed, react to produce the original reactants.

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3 years ago
Most substances can exist as a solid, liquid, or gas depending on ? ( science
earnstyle [38]

Answer:

The amount of energy in molecules of matter determines the state of matter.

Explanation:

The amount of energy in molecules of matter determines the state of matter. Matter can exist in one of several different states, including gas, liquid, or solid-state.

3 0
2 years ago
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Each isotope has a unique half-life. The half-life of an isotope is the time taken for half of the starting quantity to decay (w
Tems11 [23]

Answer:

b. 17,190

Explanation:

Using the formula for C-14 dating,

t=\dfrac{ln(\dfrac{N}{N_0})t_\frac{1}{2}  }{-0.693}

where Present Value N =1/8 of Parent Sample

Initial Value, N_0=1

Half Life, t_\frac{1}{2}=5730 years

t=\dfrac{ln(\dfrac{1/8}{1})5730}{-0.693}

=17,190

Therefore the fossil is about 17190 years old.

7 0
3 years ago
Physical or chemical change? what gave you the idea that it was such? ​
Nana76 [90]

Answer:

Chemical Change

Explanation:

It changes color and produces vapor when the foil is added to the solution.

3 0
3 years ago
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