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PIT_PIT [208]
3 years ago
14

Which element does not combine with sulfur? A.F B. G C. H D.K E. All can combine?

Chemistry
1 answer:
maw [93]3 years ago
8 0
Answer is either B or all of the above. “G” is not an element on the periodic table. If it’s not a typo, then the answer is B.
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What kind of change occurs with no new substance being formed apex?
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In dry climates, people often dig wells to find additional sources of water
vekshin1

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D i think, sorry if its wrong

Explanation:

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Question 2
san4es73 [151]

Explanation:

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If the acceleration is 600 m/s/s and the mass is 300 kg, what force is acting on the object?
vampirchik [111]

Explanation:

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During an investigation, a student burns magnesium to form magnesium oxide. The starting mass of magnesium is measured as 21.3 g
enot [183]

Answer:

Percentage yield = 85.2%

Explanation:

Given data:

Mass of Mg = 21.3 g

Actual yield of MgO = 30.2 g

Percentage yield = ?

Solution:

Chemical equation:

2Mg + O₂ → 2MgO

Number of moles of Mg = mass/molar mass

Number of moles of Mg = 21.3 g / 24.3 g/mol

Number of moles of Mg = 0.88 mol

Now we will compare the moles of MgO with Mg.

                 Mg           :               MgO

                 2               :               2

                0.88             :             0.88

Mass of MgO:           

Mass of MgO= moles × molar mass

Mass of MgO= 0.88 mol × 40.3g/mol

Mass of MgO =  35.46 g

Actual yield of MgO = 30.2 g

Percentage yield:

Percentage yield = Actual yield/theoretical yield × 100

Percentage yield = 30.2 g/ 35.46 g × 100

Percentage yield = 85.2%

3 0
3 years ago
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