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3 years ago

The principle of conservation of mass is satisfied in a chemical equation when

Chemistry

1 answer:

avanturin [10]3 years ago

8 0

The products have the same mass as the reactants

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Theories in science can be disproved through new or extended research. 1. True 2. False

tresset_1 [31]

Answer:

True

Explanation:

This is true because technology advances all the time and even Newton's "Laws" could be disproved in the future.

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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 $Cu_2S$

8 0

3 years ago

Where are elements that form molecules of two of the same atoms commonly found on the periodic table?

Sveta_85 [38]

Elements that form diatomic molecules, or molecules of two atoms each, are commonly found on the right side of the periodic table.

6 0

3 years ago

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You have a cup of water and a packet of powdered juice mix. You stir some of the powder into the cup of water and it quickly dis

matrenka [14]

The solution is unsaturated.
Supersaturated is when you put so much powder it no longer dissolves.

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3 years ago

What information is provides by the mass number A, which is the superscript in the atomic symbol?

fredd [130]

Answer:

The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom.

Explanation:

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4 years ago