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babymother [125]
3 years ago
5

I need help use e picture that’s the question I’m stuck on pleassse

Chemistry
1 answer:
aniked [119]3 years ago
5 0

Answer:

1.14 M

Explanation:

grams/molar mass = ans. / volume

317/110.98=2.86/2.50=1.14 M

- Hope that helps! Please let me know if you need further explanation.

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The radioisotope that has the longest half-life is the best to use in powering planet and space exploration vehicles because the
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Answer:

U-238

Explanation:

For a given radioisotope, half life can be defined as the time taken for the isotope to decay into one-half of its original amount. Mathematically, this is expressed as:

t_{1/2} = \frac{0.693}{k}

where k = rate constant for the radioactive decay process

Greater the t1/2 longer will be its stability.

Based on the given data, U-238 has the largest half life and therefore will be best suited for applications mentioned.

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What fraction of the space within the atom is occupied by the nucleus?
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<h2>Answer: <u><em>4.1 x 10 14 g/cm 3</em></u></h2>

Explanation:

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2. Florida has mild winter temperatures due to the _____?
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If 24.1 g of sodium hydroxide react with 22.0 g of hydrochloric acid to form 35.3g
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Answer:

10.85 g of H2O.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is given below:

NaOH + HCl —> NaCl + H2O

Next, we shall determine the mass of NaOH that reacted and the mass of H2O produced from the balanced equation.

These can be obtained as illustrated below:

Molar mass of NaOH = 23 + 16 + 1 = 40 g/mol

Mass of NaOH from the balanced equation = 1 × 40 = 40 g

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Mass of H2O from the balanced equation = 1 × 18 = 18 g

Summary:

From the balanced equation above,

40 g of NaOH reacted to produce 18 g of H2O.

Finally, we shall determine the mass of water, H2O produced from the reaction as follow:

From the balanced equation above,

40 g of NaOH reacted to produce 18 g of H2O.

Therefore, 24.1 g of NaOH will react to produce = (24.1 × 18)/40 = 10.85 g of H2O.

Therefore, 10.85 g of H2O were produced from the reaction.

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