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Naddika [18.5K]
2 years ago
8

O1S. Answer the following questions using Boyle's law:

Chemistry
1 answer:
Olenka [21]2 years ago
3 0

Answer: 0.5 atm

Explanation:

you would want to use Boyles law which is P1P2=P2V2

or in this case, 1.00atm x 5.00L=P2 x 10.0L

                       1.00x5.00/10.00= 0.50atm

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Complete the nuclear equation<br><br> 42 K → 0 e <br>19____-1
kenny6666 [7]

Answer:

42 19 K→42 20 Ca+e−

Explanation:

Naturally-occurring potassium atoms have a weighted average atomic mass of 39.10 (as seen on most modern versions of the periodic table.) Each potassium atom contains 19 protons p+ and thus an average potassium atom contains about 39.10−19≈20 neutrons n0.

This particular isotope of potassium-42 contains 42 nucleons (i.e., protons and neutrons, combined;) Like other isotopes of potassium 19 out of these nucleons are protons; the rest 42−19=23 are therefore neutrons.

5 0
2 years ago
Calculate the percent by volume of a solution that has 75 mL of solute dissolved in 375 mL of solution. Show your work and round
Mandarinka [93]

Answer:

The answer is 20 % V/V

Explanation:

We use this formula for calculate the %V/V:

%V/V= (ml solute/ml solution) x 100= (75ml/375 ml)x 100 = 20 % V/V

<em>The% V / V represents the amount of ml of solute dissolved in 100 ml of solution</em>

7 0
3 years ago
A gas cylinder contains exactly 15 moles of oxygen gas (O2) how many molecules of oxygen are in a cylinder
butalik [34]
When you say mhello les do uou mean moecules
8 0
3 years ago
Read 2 more answers
How much heat energy is required to raise the temperature of 15g of silver from 25°C to 55°C, assuming the specific heat of silv
Alenkasestr [34]

Answer:

108 j

Explanation:

.24 j/g-C  * 15 g * (55-25) =

6 0
2 years ago
How many moles are in 5.0 x 10^25 atoms of iron?
Andreas93 [3]

Hello!

To find the number of moles that are in the given amount, we need to divide the total number of atoms by Avogadro's number, which is 1 mole is equal to 6.02 x 10^23 atoms.

5.0 x 10^25 / 6.02 x 10^23 ≈ 83.0564

Therefore, there are about 83.06 moles of iron (sigfig: 83 moles).

7 0
3 years ago
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