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xz_007 [3.2K]
3 years ago
10

write the equation that matches the description one atom of zinc reacts with one atom of sulfur to yield one molecule of zinc su

lfide
Chemistry
1 answer:
Elis [28]3 years ago
3 0

Answer: Zn + S —> ZnS

Explanation:

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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
Is carbon dioxide a polar molecule? Why or Why Not?
irinina [24]

Explanation:

Carbon dioxide isn't a polar molecule because

same nature of charge appears in opposite direction which cancel each other. So, carbon dioxide is non-polar molecule.

6 0
3 years ago
How long did the conversion of benzoyl chloride to n,n-diisopropylbenzamide take?
ser-zykov [4K]

It was first prepared by treatment of benzaldehyde with chlorine. the method was early for production of benzoyl chloride involved chlorination of benzyl alcohol.

Benzoyl chloride was made from benzotrichloride using either water or benzoic acid.

CHCCl + CHCOH → 2 CHCOCl + HCl As with other acyl chlorides, it can be generated from the parent acid and other chlorinating agents phosphorus pentachloride or thionyl chloride.

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5 0
3 years ago
Find q when 22.0g of water is heated from 25.0 C to 100 C. The specific heat capacity is water is 4.184 J/g.K
Leokris [45]

Answer:27,430J/g.K

Explanation:q= mass* specific heat capacity * change in temperature (kelvin)

22*4.184*[(100-25) + 273]

22*4.184*298

27,430J/g.K

3 0
3 years ago
A rock weighing 26.0 g is placed in in a graduated cylinder displacing the volume from 13.2mL to 25.3 mL. What is the density of
SSSSS [86.1K]
2.11487 grams/cubic centimeter
5 0
3 years ago
Read 2 more answers
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