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3 years ago

Classify each of these as a heterogeneous or homogeneous mixture

Chemistry

1 answer:

GaryK [48]3 years ago

4 0

Answer:

blood- homogeneous

ocean water - heterogeneous

air- homogeneous

blueberry pancakes - homogeneous

milk - homogeneous

steel - homogeneous

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How many SO2 molecules are in 1.76 mol of SO2? How many sulfur atoms and oxygen atoms are there?

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Answer:

1.76 * 6.02*10^23 = 1.05952*10^24

1.05952*2 = 2.11904 *10^24 oxygen and 1.05952*10^24 sulfur atoms

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2 years ago

In an oxidation-reduction reaction, the total number of electrons lost is

netineya [11]

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4 years ago

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How will electron pairs behave towards one another according to VSEPR?

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Electrons are negatively charged particles. Like charges repel one another, so electron pairs will want to be as far apart from each other as possible. Thus, the answer here would be A.

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3 years ago

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

When lithium and fluorine combined, what is the compound form

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Lithium fluoride is the compound name

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3 years ago

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