Answer: The given statement is true.
Explanation:
According to the Dalton's law, total pressure of a mixture of gases that do not react with each other is equal to the partial pressure exerted by each gas.
The relationship is as follows.
![p_{total} = \sum_{i=1}^{n} p_{i}](https://tex.z-dn.net/?f=p_%7Btotal%7D%20%3D%20%5Csum_%7Bi%3D1%7D%5E%7Bn%7D%20p_%7Bi%7D)
or, ![p_{total} = p_{1} + p_{2} + p_{3} + p_{4} + ......... + p_{n}](https://tex.z-dn.net/?f=p_%7Btotal%7D%20%3D%20p_%7B1%7D%20%2B%20p_%7B2%7D%20%2B%20p_%7B3%7D%20%2B%20p_%7B4%7D%20%2B%20.........%20%2B%20p_%7Bn%7D)
where,
....... = partial pressure of individual gases present in the mixture
Also, relation between partial pressure and mole fraction is as follows.
![p_{i} = p_{total} \times x_{i}](https://tex.z-dn.net/?f=p_%7Bi%7D%20%3D%20p_%7Btotal%7D%20%5Ctimes%20x_%7Bi%7D)
where,
= mole fraction
Thus, we can conclude that the statement Dalton's law of partial pressures states that the total pressure exerted by a mixture of gases is the sum of the pressures exerted independently by each gas in the mixture, is true.
Salt is a compound.
Most salts are ionic compounds, meaning that they are made up of ions rather than molecules.
The ball with smaller mass (baseball) will travel faster when he pitcher gives the two balls the same amount of kinetic energy.
The given parameters:
- Mass of the baseball, m = 145 g = 0.145 kg
- Mass of the softball, M = 185 g = 0.185 kg
<h3>What is kinetic energy?</h3>
- Kinetic energy of an object is the energy possessed by the object due to its motion.
The kinetic energy of an object in motion is calculated as follows;
![K.E = \frac{1}{2} mv^2](https://tex.z-dn.net/?f=K.E%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20mv%5E2)
The speed of each ball with respect to their masses is calculated as follows;
![K.E = \frac{1}{2} mv^2\\\\2K.E = mv^2\\\\v^2 = \frac{2K.E}{m} \\\\v = \sqrt{\frac{2K.E}{m} } \\\\](https://tex.z-dn.net/?f=K.E%20%3D%20%5Cfrac%7B1%7D%7B2%7D%20mv%5E2%5C%5C%5C%5C2K.E%20%3D%20mv%5E2%5C%5C%5C%5Cv%5E2%20%3D%20%5Cfrac%7B2K.E%7D%7Bm%7D%20%5C%5C%5C%5Cv%20%3D%20%5Csqrt%7B%5Cfrac%7B2K.E%7D%7Bm%7D%20%7D%20%5C%5C%5C%5C)
Thus, the ball with smaller mass (baseball) will travel faster when he pitcher gives the two balls the same amount of kinetic energy.
Learn more about kinetic energy here: brainly.com/question/25959744
<span>We can relate the average speed
of the gas molecules by its kinetic energy. The kinetic energy is the work done
by the object due to its motion. It is represented by the formula of the half
the velocity squared multiply by the mass of the object. The absolute zero
theory is the assumption that at 0 Kelvin or -273.15 degrees Celsius, the gas
molecules stop moving. It is because the temperature is severely cold enough to
allow movement of the gas molecules. The gas molecule that is closest to the
absolute zero is in cylinder B because it moves so slow and its movement is
almost near to the absolute zero theory.</span>
Answer:
pH → 1.13
Explanation:
Our solution is pure HCl
HCl(aq) + H₂O(l) → H₃O⁺(aq) + Cl⁻(aq)
As a strong acid, it is completely dissociated.
1 mol of HCl, can give 1 mol of H⁺ to the medium. Water does not participate. Let's find out M for the acid.
1st step: We convert the mass from mg to g → 327 mg . 1g /1000mg = 0.327 g
2nd step: We convert the mass(g) to moles: 0.327 g / 36.45 g/mol = 8.97×10⁻³ moles
3rd step: We convert the volume from mL to L → 120mL . 1L /1000 mL = 0.120L
Molarity (mol/L) = 8.97×10⁻³ mol / 0.120L = 0.075M
We propose: HCl(aq) + H₂O(l) → H₃O⁺(aq) + Cl⁻(aq)
0.075M 0.075M
pH = - log [H₃O⁺] → - log 0.075 = 1.13 → pH