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3 years ago

Balanced Equation: Zn + 2HCI - ZnCl2 + H2

Chemistry

1 answer:

lawyer [7]3 years ago

4 0

Answer:

my friend: why is there no pretty girl who swims?

me: because all of there makeup washes off in the water

Explanation:

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What is a decay series?

Ulleksa [173]

Answer:

a chain of decays that result in a stable nucleus

Explanation:

Decay series is a series of decay in which radioactive element is decomposed in different elements until it produces one stable atom.

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3 years ago

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What is the difference between a molecular formula and a molecular model?

icang [17]

There really isn't a difference if you think about it

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4 years ago

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Digoxin is available in a concentration of 0.1 mg/ml. How many ml are required to administer a 75 mcg dose?

Step2247 [10]

Answer : The volume required to administer a 75 mcg dose are, 0.75 mL

Explanation : Given,

Concentration of Digoxin = 0.1 mg/mL

That means, 0.1 mg of Digoxin present in 1 mL of solution.

Mass of dose = 75 mcg = 0.075 mg

Conversion used : (1 mcg = 0.001 mg)

Now we have to determine the volume required to administer a 75 mcg dose.

As, 0.1 mg of Digoxin required in 1 mL of solution

So, 0.075 mg of Digoxin required in $\frac{0.075mg}{0.1mg}\times 1mL=0.75mL$ of solution

Thus, the volume required to administer a 75 mcg dose are, 0.75 mL

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3 years ago

Which of the following elements are already balanced in this equation? FeS₂ + Cl₂ → FeCl₃ + S₂ Cl₂

Anuta_ua [19.1K]

Fe and S are already balanced in this equation

<h3>Further explanation</h3>

Balanced indicates that the number of elements in question has the same number of atoms both on the left side (the number on the reactants side) and on the right side (the number on the product side)

Even though one of the elements is said to be balanced, the chemical equation as a whole cannot be said to be balanced, because the chemical equation has several components of the constituent elements.

To balance chemical equations, a coefficient in front of the compound is usually added either in the reactants or products

Reaction

FeS₂ + Cl₂ → FeCl₃ + S₂Cl₂

From this equation, it can be shown that: the Fe and S elements are balanced because the numbers are equal both on the left and right, while the Cl elements are not yet balanced

Fe, left=1, right=1 ⇒ balanced

S, left=2, right=1 ⇒ balanced

Cl, left=2, right=5⇒ not balanced

For balanced equations:

2FeS₂ + 5Cl₂ → 2FeCl₃ + 2S₂Cl₂

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3 years ago

How many equivalent lewis structures are necessary to describe the bonding in no2cl?

bogdanovich [222]

Answer:

The correct answer is "two".

Explanation:

The main bondings that has an effect in a Lewis structure in NO2Cl are the double bondings occurring between the Oxygen atoms and the Nitrogen atom. Since the NO2Cl compound has two oxygen atoms attached to the nitrogen atom, two equivalent lewis structures will be necessary to describe it. I attached an example of two equivalent Lewis structure corresponding to a NO2 molecule.

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3 years ago