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goldfiish [28.3K]
3 years ago
8

The heating curve shows the energy gain of a substance as it changes from solid to gas. Which section of graph shows the liquid

phase of a substance gaining kinectic energy ?

Chemistry
1 answer:
BartSMP [9]3 years ago
6 0

Answer:

section c

Explanation:

section A shows the soild state

section B shows the transition of solid to liquid

section C shows the the pure liquid state

section D shows the transition of liquid to gas

section E shows the pure gas state

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In a covalent bond, the electrons are _____
Ivenika [448]

Explanation:

In a covalent bond the electrons are simultaneously attracted by the two atomic nuclei.

6 0
2 years ago
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Which group in the periodic table contains the three elements with the highest electrical conductivities?
9966 [12]

Answer:

C Group 11

Explanation:

Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au).

These elements show highest electrical conductivity.

7 0
3 years ago
If the half life of a radioactive isotope is 5000 years, how much of the radioactive isotope in a specimen will be left after 10
marissa [1.9K]
Half life is the time taken by a radioactive isotope to decay by half its original mass. In this case, the halflife of the radioactive isotope is 5000 years. 
Initially the mass is 100 %; thus the mass that will be left will be given by;
New mass = Original mass × (1/2)^n where n is the number of half lives; 
  n = 10000/5000 = 2
New mass = 100% ×(1/2)^2
                 = 100 % × 1/4 
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Therefore; the mass left after 10000 years is 25% or 1/4 of the original mass.
5 0
3 years ago
A detail that distinguishes a solid from a liquid is-------?
svetoff [14.1K]
A solid is hard and the molecules are packed together, a liquid can move around freely because the molecules aren't as packed together :)
8 0
3 years ago
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PLEASE HELP DUE TODAY
11111nata11111 [884]

Formula mass, molar mass and Avagadro's number.

Explanation:

number of atoms in a compound can be calculated by knowing the molar mass of the compound or element, the result will be multiplied by avagadro's number (6.022*10^23)

1 mole of a substance is equal to Avagadro number of atoms.

If the number of moles is known of a compound or element its molar mass can be calculated as:

n= Weight of the compound/element given/ molecular weight of the same.

  formula mass is the mass of compound ie chemical compound formed with different molecules. its mass is calculated by adding the molar masses of all the elements taking part in its assembly.

5 0
3 years ago
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