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Oxana [17]
3 years ago
11

What is the density of a 12-gram sample of zinc with volume of 8.4 cm3? pls hurry pls

Chemistry
1 answer:
Sindrei [870]3 years ago
8 0

AnswerIm telling your teacher "Ms.Byrd" your in 8th grade and go to berry middle?

Explanation:

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Rsy-feiu-xad j0in only girlś​
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3 0
3 years ago
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Which element has the highest thermal conductivity
Vera_Pavlovna [14]

Answer:

Diamond.

Explanation:

Having thermal conductivity of more than 2,000 WMK

WMK = Watts per Meter per Kelvin

3 0
3 years ago
How many moles of carbon dioxide gas should be produced when 10.0 g of C2H6 are combusted at STP?
Finger [1]

Answer:

                    0.665 moles of CO₂

Explanation:

                     The balance chemical equation for the combustion of Ethane is as follow:

                            2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O

Step 1: <u>Calculate moles of C₂H₆ as;</u>

                              Moles  =  Mass  /  M.Mass

Putting values,

                              Moles  =  10.0 g / 30.07 g/mol

                              Moles  =  0.3325 moles

Step 2: <u>Calculate Moles of CO₂ as;</u>

According to balance chemical equation,

                    2 moles of C₂H₆ produced  =  4 moles of CO₂

So,

             0.3325 moles of C₂H₆ will produce  =  X moles of CO₂

Solving for X,

                      X  =  0.3325 mol × 4 mol ÷ 2 mol

                      X = 0.665 moles of CO₂

3 0
3 years ago
What is conclusive evidence that mixing sugar in water is a physical change
Evgesh-ka [11]

Explanation:

1) their is no formation of new substance

2) the reaction can be reverse i.e if we heat sugar solution it we give us sugar and water.

6 0
2 years ago
Which compound contains both sigma and pi bonds
Misha Larkins [42]
Any compound with multiple covalent bonds
6 0
3 years ago
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