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trapecia [35]
2 years ago
7

What does group 16 (oxygen family) have in common

Chemistry
2 answers:
Dimas [21]2 years ago
7 0

Answer: here is your answer

Explanation:

The oxygen family consists of the elements that make up group 16 on the periodic table: oxygen, sulfur, selenium, tellurium, and polonium. These elements all have six electrons in their outermost energy level, accounting for some common chemical properties among them.

Marina86 [1]2 years ago
6 0

Answer:

they all have 6 valence electrons

Explanation:

all elements in group 16 have 6 valence electrons

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3) Calculate the percent by mass of 3.55 g NaCl dissolved in 88 g water.
kotykmax [81]

Answer:

The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%

Explanation:

When a solute dissolves in a solvent, the mass of the resulting solution is a sum of the mass of the solute and the solvent.

A percentage is a way of expressing a quantity as a fraction of 100. In this case, the percentage by mass of a solution is the number of grams of solute per 100 grams of solution and can be represented mathematically as:

Percent by mass=\frac{mass of solute}{mass of solution} *100

In this way it allows to precisely establish the concentration of solutions and express them in terms of percentages.

In this case:

  • mass of solute: 3.55 g
  • mass of solution: 3.55 g + 88 g= 91.55 g

Replacing:

Percentbymass=\frac{3.55}{91.55}*100

Percent by mass= 3.88%

<u><em>The percent by mass of 3.55 g NaCl dissolved in 88 g water is 3.88%</em></u>

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3 years ago
A solution composed of 30.6g NH3 in 81.3g of H20. Calculate the mole fraction for NH3 and H20
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0.286 moles

Explanation:

i hope this is helpful for you

4 0
2 years ago
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Density of distilled water?? What is the density of distilled water???
MAXImum [283]
The density is one gram per mL, so 1.
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How many moles are in a 62.5-g sample of potassium nitrate (KNO3)?
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