Molarity is a measure of concentration in a solution.
Molarity is a measure of concentration in a solution. It represents the amount of a solute dissolved in a given volume of solvent. Molarity is calculated by dividing the moles of solute by the volume of the solution in liters.
OB. only the important elements that exist in the world.
OC. only the important compounds that exist in the world.
OA. all the known elements that exist in the world today.
Answer:
Option (A) saturated and is at equilibrium with the solid KCl
Explanation:
A saturated solution is a solution which can not dissolve more solute in the solution.
From the question given above, we can see that the solution is saturated as it can not further dissolve any more KCl as some KCl is still visible in the flask.
Equilibrium is attained in a chemical reaction when there is no observable change in the reaction system with time. Now, observing the question given we can see that there is no change in flask as some KCl is still visible even after thorough shaking. This simply implies that the solution is in equilibrium with the KCl solid as no further dissolution occurs.
Answer:
0.190 M
Explanation:
Let's consider the neutralization reaction between HCl and NaOH.
HCl + NaOH = NaCl + H2O
11.9 mL of 0.160 M NaOH were used. The reacting moles of NaOH were:
0.0119 L × 0.160 mol/L = 1.90 × 10⁻³ mol
The molar ratio of HCl to NaOH is 1:1. The reacting moles of HCl are 1.90 × 10⁻³ moles.
1.90 × 10⁻³ moles of HCl are in 10.0 mL of solution. The molarity of HCl is:
M = 1.90 × 10⁻³ mol / 10.0 × 10⁻³ L = 0.190 M
Answer:
The initial concentration of HCl was 0.1904 M
Explanation:
Step 1: Data given
Volume of HCl solution = 10.0 mL = 0.010 L
Volume of a NaOH solution = 11.9 mL = 0.0119 L
Molarity of NaOH solution = 0.160 M
Step 2: The balanced equation
HCl + NaOH → NaCl + H2O
Step 3: Calculate the concentration of HCl
C1*V1 = C2*V2
⇒with C1 = the concentration HCl = TO BE DETERMINED
⇒with V1 = the volume of HCl = 0.010 L
⇒with C2 = the concentration of NaOH = 0.160 M
⇒with V2 = the volume of NaOH = 0.0119 L
C1 * 0.010 L = 0.160 M * 0.0119 L
C1 = (0.160 M * 0.0119 L) / 0.010 L
C1 = 0.1904 M
The initial concentration of HCl was 0.1904 M
Using Boyle's Law of gases which states that the pressure and volume of a gas have an inverse relationship when temperature is kept constant, we find that when the pressure of the gas increases from 5.0 to 7.0 atmospheres, the volume of the gas decreases to approximately 3.57 liters.
The question pertains to the application of Boyle's Law, a fundamental concept in the field of physics dealing with gases. Boyle's Law states that the pressure and volume of a gas have an inverse relationship when the temperature is held constant. This means if the pressure of a gas increases, the volume decreases, and vice versa.
In this case, you have 5.0 liters of a gas under an initial pressure of 5.0 atmospheres. The pressure is then increased to 7.0 atmospheres, and you are asked to determine the new volume of the gas. To solve this problem, we use the formula for Boyle's Law, which is P1V1 = P2V2. We know P1 (initial pressure) is 5.0 atmospheres and V1 (initial volume) is 5.0 liters. P2 (final pressure) is increased to 7.0 atmospheres and V2 (final volume) is what we are trying to find.
So, we plug the numbers into the equation and get: 5.0 atmospheres * 5.0 liters = 7.0 atmospheres * V2. Solving for V2, we find V2 to be approximately 3.57 liters. Therefore, when the pressure of the gas is increased from 5.0 atmospheres to 7.0 atmospheres, the volume decreases to around 3.57 liters, while the temperature remains constant.
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B. Dispersion
C. Hydrogen bond
D. Single covalent bond
The weakest force of molecular attraction is dispersion.
(Option B)
The dispersion force is also known as London dispersion forces is a weak intermolecular force.
These dispersion forces arise due to temporary fluctuations in electron distribution within molecules, creating temporary dipoles.
These temporary dipoles induce similar dipoles in neighboring molecules, resulting in attractive forces between them.
Dispersion forces are present in all molecules, regardless of their polarity or the presence of other types of bonds or interactions.
However, they tend to be weaker compared to other intermolecular forces, such as dipole-dipole interactions and hydrogen bonds.
Learn more about Dispersion forces here: brainly.com/question/1454795
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b. dispersion
Definition of Dispersion by Mimiwhatsup: a mixture in which fine particles of one kind of substance is scattered throughout another substance.
Answer:
Heterogeneous Mixture. Have a good day! =)
Explanation: