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3 years ago

Can a stable compound be made from these two atoms? Explain why or why not.

Chemistry

1 answer:

Alekssandra [29.7K]3 years ago

6 0

No, because oxygen wants two electrons to become stable and lithium will only give up one electron.

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2 A certain gas of 25 g at 25°c and 0.65 atm occupies a volume of 23.52L Determine the molecule mass of the gas.

denpristay [2]

Answer:

${ \bf{PV= \frac{m}{M} RT}} \\ \\ { \tt{(0.65 \times 23.52) = \frac{25}{M} \times 0.081 \times (25 + 273)}} \\ \\ M = 39.5 \: g$

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3 years ago

what is the anode material used in the extraction of aluminium by electrolysis and why it needs to be changed at interval

pishuonlain [190]

Answer:

the anode material is graphite(replaceable graphite rods).

The oxygen gas burns away the anode as Carbon dioxide therefore the anode must be replaced continuously.

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3 years ago

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Genrish500 [490]

Disagree is the awnser to this question

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3 years ago

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Fill out the chart below with things about the lion and tarantula that make them predators. Think of at least one trait that the

aleksandr82 [10.1K]

Answer:

the lion and the tarantula are both carnivores

the lion and the tarantula both live in hot dry places

Explanation:

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3 years ago

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In a chemical reaction, sulfur (S8) combines with copper to give a pure compound. If you start with 1.000 g of sulfur (S8) and o

Airida [17]

Answer: The empirical formula for the given compound is $Cu_2S$

Explanation:

We are given:

Mass of pure compound containing copper and sulfur = 4.963 g

Mass of S = 1.000 g

Mass of Cu = (4.963 - 1.000) g = 3.963 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Copper = $\frac{\text{Given mass of Copper}}{\text{Molar mass of Copper}}=\frac{3.963g}{63.55g/mole}=0.0624moles$

Moles of Sulfur = $\frac{\text{Given mass of Sulfur}}{\text{Molar mass of Sulfur}}=\frac{1.000g}{32g/mole}=0.0312moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.0312 moles.

For Copper = $\frac{0.0624}{0.0312}=2$

For Sulfur = $\frac{0.0312}{0.0312}=1$

Step 3: Taking the mole ratio as their subscripts.

The ratio of Cu : S = 2 : 1

Hence, the empirical formula for the given compound is $Cu_2S$

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3 years ago