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3 years ago

How many total atoms are represented by this formula 3NaOH? A.1 B.3 C.6 D.9???

Chemistry

2 answers:

Sonja [21]3 years ago

7 0

Answer:

D. 9.

Step-by-step explanation:

One formula unit of NaOH contains <em>three atoms</em>: 1 Na, 1 O, and 1 H.

3 formula units × (3 atoms/1 formula unit) = 9 atoms

kirill [66]3 years ago

4 0

Answer: D. 9

Explanation:

Atom is the smallest unit of matter which may or may not have independent existence. Example: $H$

Molecule is the smallest unit of matter which has a independent existence. Example: $H_2$

1 molecule of $NaOH$ has 1 atom of sodium, 1 atom of oxygen and 1 atom of hydrogen and thus total of 3 atoms.

Thus if 1 molecule of $NaOH$ has total of 3 atoms.

Thus 3 molecules of $NaOH$ has total of = $\frac{3}{1}\times 3=9atoms$

Thus 9 atoms are represented by this formula $3NaOH$

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4 years ago

1. How many milliliters of 10.0 M HNO 3 are needed to prepare 0.350 L of 0.400 M solution?

tatyana61 [14]

<h3>Answer:</h3>

14 milliliters

<h3>Explanation:</h3>

We are given;

10.0 M HNO₃

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Volume of solution as 0.350 L
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We are required to determine the initial volume of HNO₃

We are going to use the dilution formula;
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3 years ago

Science 7 Grade 7. Can anyone please help me answer these science questions?

masha68 [24]

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3 years ago

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musickatia [10]

Answer:

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Explanation:

Step 1: Given data

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Final volume (V₂): ?

Step 2: Convert P₁ to mmHg

We will use the conversion factor 1 atm = 760 mmHg.

0.985 atm × 760 mmHg/1 atm = 749 mmHg

Step 3: Calculate the final volume of the gas

Assuming ideal behavior and constant temperature, we can calculate the final volume using Boyle's law.

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3 years ago

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Valentin [98]

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3 years ago

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