The combustion of ethane

(

C

2

H

6

)

produces carbon dioxide and steam.

2

C

2

H

6

(

g

)

+

7

O

2

(

g

)

⟶

4

CO

2

(

g

)

+

6

H

2

O

(

g

)

How many moles of

CO

2

are produced when

5.05

mol

of ethane is burned in an excess of oxygen?

Match the element with its description. Match Term Definition Potassium A) Has properties of both metals and nonmetals Barium B) Nonreactive gas Boron C) Great conductor of heat and electricity Neon D) Malleable and highly reactive

Given that a 12.00 g milk chocolate bar contains 8.000 g of sugar, calculate the percentage of sugar present in 12.00 g of milk chocolate bar keeping in mind that the answer should have four significant figures (two decimal places).

What is the density of 8.96g/1ml

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The elements in any blank in periodic table have similar physical and chemical properties

Suppose there is 0.63 g of HNO3 per 100 mL of a particular solution. What is the concentration of the HNO3 solution in moles per liter?

Of the three thermodynamic quantities, δg, δh, δs, which is most useful for determining spontaneity of a reaction?

Does the density of an object depend on its size? Explain?.

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