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dybincka [34]
3 years ago
15

Which of the following does not represent a molecular compound ?

Chemistry
1 answer:
SVETLANKA909090 [29]3 years ago
3 0
B) bal2 is the answer
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Magnesium has three naturally occurring isotopes with masses of 23.99 amu, 24.99 amu, and 25.98 amu and natural abundances of 78
mihalych1998 [28]

Answer:24.31

Explanation:Contribution made by isotope of mass 23.99= 23.99×78.99=1894.97

Contribution made by isotope of mass 24.99=24.99×10.00=249.9

Contribution made by isotope of mass 25.98=25.98×11.01=286.04

Total contribution=1894.97+249.9+286.04=2430.91

Average mass=2430.91÷100

=24.31

3 0
3 years ago
A filament of a light bulb is made from a pure sample of tungsten.
GenaCL600 [577]

Answer:

The correct options are:

1) Pure chemical substance

2) Element.

Explanation:

each of the term is explained below:

1) <u>Mixture: </u> Since tungsten is an element in periodic table thus it is not a mixture.

2) False by definition of mixture.

3) false by definition of mixture.

4) <u>Solution:</u> Tungsten in a filament is in solid form hence solution is incorrect.

5) Since it is given in the question itself that the sample is pure hence option 'E' is correct as chemical substance is a pure substance that has a homogeneous composition and the sample in the question is given as pure.

6) <u>Compound:</u> By definition of compound it is formed by mixing 2 or more elements but since tungsten is an element that occurs independently in nature hence it is not a compound.

7) Tungsten is a element in the periodic table with atomic number 74.

8 0
3 years ago
Balance the following equations
Shtirlitz [24]
2K + Cl₂ ⇒ 2KCl

2Ca + O₂ ⇒ 2CaO
6 0
3 years ago
which Law relates temperature,pressure,volume,and the number of miles of a gas under perfect conditions
spin [16.1K]

Answer:

the ideal gas law

Explanation:

hope this helps

please like and Mark as brainliest

3 0
3 years ago
The following flow of energy takes place in one ecosystem: alga → insect → larva flatworm → fish.
patriot [66]

Answer: D. Alga

Explanation:

5 0
2 years ago
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