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Yuki888 [10]
3 years ago
5

The hypothesis states that the fraction of radioactive nuclei after N half-lives is 0.5n.

Chemistry
2 answers:
Dimas [21]3 years ago
8 0

Answer:

The answers to the next parts are:

Explanation:

C) 0.5 • 0.5 • 0.5 . . .  • 0.5.

C) the number of half-life cycles

NNADVOKAT [17]3 years ago
7 0
The fraction of nuclei still radioactive after any half-life cycle.
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A solution of sugar contains 35 gramsof sucrose, C12H22O11in 100 mL of water. What is the percent composition of the solution?
KATRIN_1 [288]

Answer:

Percent composition of the solution is 26 % of sucrose and 74 % of water

Explanation:

Percent composition is the mass of solute, either of solvent in 100 g of solution.

Mass of solution = Mass of solvent + Mass of solute

Mass of solute = 35 g

Mass of solvent = 100 g

As we know, water density = 1g/mL

So 1g/mL . 100 mL = 100 g

35 g + 100 g = 135 g → Mass of solution

(Mass of solute / Mass of solution) . 100 =

(35 g / 135 g) . 100 = 26 %

(Mass of solvent / Mass of solution) . 100 =

(100 g / 135 g) . 100 = 74 %

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3 years ago
An atom contains one proton , one electron, and one neutron. Which two particles are most similar in mass
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Proton and neutron, which are both approximately 1 amu
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3 years ago
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Calculate the number of ATOMS in 1.0 mole of O2.
Wewaii [24]
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If 14 moles of oxygen react with 14 moles of hydrogen to produce water, what is the
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7 0
3 years ago
What mass of sucrose needs to be dissolved in 540 g of water in order to prepare a 15% by mass solution.
Lilit [14]

Answer:

95.3g

Explanation:

Given parameters:

Mass of water  = 540g

Percentage by mass of solution = 15%

Unknown:

Mass of sucrose = ?

Solution;

To solve this problem, we must understand that a solution is made up of solute dissolved in a solvent. A solute is the solid dissolved in another. The solvent is the is dissolving medium;

    Percentage by mass of solute in solution = \frac{Mass of solute}{Mass of solution}  x 100

Mass of solution  = mass of water + Mass of sucrose  = 540 + M

  where M is the mass of sucrose;

therefore;

                 \frac{M}{540 + M }  x 100   = 15

   Solving for M gives 95.3g

Mass of sucrose is 95.3g

5 0
3 years ago
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