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3 years ago

A liquid medicine is labeled as having 5% active ingredient, by volume. If

Chemistry

1 answer:

enyata [817]3 years ago

4 0

Answer:

2.5 mL

Explanation:

Step 1: Given data

Concentration of the active ingredient (C): 5% v/v

Volume of the medicine (V): 50 mL

Step 2: Calculate the amount of the active ingredient in the medicine

The concentration of the active ingredient is 5% v/v, that is, there are 5 mL of the active ingredient per 100 mL of the medicine. The volume of the active ingredient is 50 mL of the medicine is:

50 mL Med × 5 mL AI/100 mL Med = 2.5 mL AI

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Two containers hold the same radioactive isotope. Container A contains 1000 atoms, and container B contains 500 atoms. which con

enyata [817]

Answer:

The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B.

Explanation:

From the question,

Container A contains 1000 atoms

Container B contains 500 atoms

The rate of decay of atoms in container A is greater than the rate of decay of atoms in container B.

The reason for such is due to the difference in the concentration of the isotopes. Container A which contains higher number of atoms will have the more changes of the release of the neutron as the changes of the hitting and splitting increases as the density of the atoms increases.

Thus, the atoms in the container A will therefore decay faster than the atoms in the container B.

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4 years ago

What is the difference between aluminum phosphide and aluminum phosphate?

lana [24]

Answer:

The answer is below

Explanation:

Here some of the difference between aluminum phosphide and aluminum phosphate

1. Aluminum phosphide is a crystalline solid with either dark gray or yellow color. While Aluminum Phosphate is in a nanopowder form but with a whitish color.

2. Aluminum phosphide is used in the fumigation of plants, while Aluminum phosphate is used in cosmetics, paints, etc.

3. Aluminum phosphide has a compound formula of AlP with a molar mass of 57.9552 g/mol, while Aluminum Phosphate has a compound formula of AlO4P with a molar mass of 121.9529 g/mol

7 0

3 years ago

HELP PLEASE

dsp73

The plane of the Moon's orbit around the Earth is tilted by 5° with respect to the plane of the Earth's orbit around the Sun, the ecliptic. This tilt prevents an eclipse from occurring at every new and full moon. In a lunar eclipse, the observer watches the Earth's shadow fall on the Moon.

6 0

3 years ago

Read 2 more answers

Which of the following is correct concerning Hess's law?

Margaret [11]

I believe the correct answer would be that the change in enthalpy can be found by adding the enthalpies of the individual thermochemical reactions of a chemical reaction. In Hess' Law, enthalpy is independent of the mechanism of the reaction. The enthalpy should be the sum of all the changes in the reaction.

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3 years ago

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A battery can provide a current of 4.60 A at 3.40 V for 2.50 hr. How much energy (in kJ) is produced? 1st attempt kJ Energy

Lunna [17]

Answer:

The energy produced equals 140.760 kJ

Explanation:

The relation between power, current and voltage is

$Power=Current\times Voltage$