How will the vapor pressure of an aqueous solution of sodium chloride compare to that of pure water?
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The vapor pressure of a compound refers to the pressure generated by the vapour of a compound in equilibrium with its condensed stage. The major determinant of a compound vapour pressure is temperature. The vapour pressure of an aqueous solution of sodium chloride will be lower than that of pure water. This is because, dissolution of solute in a solvent always reduces the vapour pressure of the solution as a result of interactions between the molecule of the solute and the solvent. Thus, a pure compound will always have a higher vapour pressure than a solution.
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I REALLY NEED HELP WITH THIS CHEMESTRY PROJECT. I DO NOT UNDERSTAND ANYTHING OF THIS. CAN YOU GUYS PLZ HELP ME?Problem: You and your team work at Southern Nevada Water Authority and have been given the job of managing fluoride levels for the municipal water system. Today, you will need to measure the mass of the mineral sample fluorite (chemically, CaF2). Use this sample to determine how much water must be added to yield a 1 ppm fluoride solution. Your supervisor is requesting tanker trucks to bring the excess water. He needs to know how many tanker trucks to request and the total cost.Notes: 1 mol CaF2 = 78.08 g CaF2 = 6.02 x 1023 molecules of CaF21 molecules of CaF2 = 2 atoms of F1 mol H2O = 18 g H2O Density of water is 1 g/mL1000 mL = 1 L and 3.78 L = 1 gallonmass of sample of CaF2 = 287.185 g1 part per million = 1 atom of fluorine per 999,999 water molecules. 1 truck can carry 12,800 litters of water at a cost of $2,852.42 dollars.Before you begin mixing a solution of fluorite and water your team must first calculate the amount of water you will need. Your team will create a presentation that will show all of the necessary calculations to ensure that the greater Las Vegas area will have cavity free teeth. The presentation should include the following information:- Draw a diagram that points out the basic design of the water system and transport.- Demonstrate the following calculations (a) Calculate how many moles of mineral fluorite (CaF2) are in you sample. (b) Calculate the number of fluorine atoms in the sample of the mineral fluorite (CaF2). (b) Calculate how many molecules of water you will need. (c) Calculate the number of gallons of water that are needed to dissolve a 287.185 gram sample of fluorite to yield 1ppm solution.(e) How many trucks will be needed? Show your calculations!(f) what is will be the total cost?- Bonus points for creativity or “WOW” factor (i.e. pictures, color, neatness)!
Glucose is an important sugar in many biochemical reactions what is the molarity of a solution that contains 500 grams of glucose (molecular weight= 180.16 g/mol) in 7.02 liters of solutiona. .56Mb. .78 Mc. 3.85 Mb. 4.98 M
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The is Answer is air
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The reactant that is used up first in a reaction.
B. The collision rate of the reactant particles increased.
C. The concentrations of the reactant particles increased.
D. The concentrations of the product particles decreased.
Answers
Answers
Answer: Option (3) is the correct answer.
Explanation:
A reaction in which the concentration of reactants equal to the concentration of products is known as an equilibrium reaction.
For example,
Therefore, we can also say that in an equilibrium reaction rate of forward reaction becomes equal to the backward reaction.
The true statement about a system at equilibrium is that the forward reaction rate is equal to the reverse reaction rate.
What is equilibrium state?
Equilibrium state is that state in which the concentration of reactant as well as of producrs are constant. i.e. not changes.
Equilibrium state of any reaction will be represented by the double headed arrow as:
A + B ⇄ C + D
Given reaction defines that rate of forward reaction is equal to the rate of the backward reaction.
Hence option (3) is correct.
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B. Mg, Sr, and Ba
C. N2, O2, and F2
D. Ca, Cs, and Cu
Please explain your answer in this case
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The elements that have the most similar chemical properties are .
Further Explanation:
Periodic table:
Elements are arranged in increasing order of their atomic numbers in various rows and columns. Such tabular arrangement is called a periodic table. The elements with the same chemical and physical properties lie in the same group. Horizontal rows are called periods and vertical columns are called groups. There are 18 groups and 7 periods in a periodic table.
Elements are also classified as metals, non-metals, and metalloids in this table. The elements placed at the left side of the table are metals while those placed at the right of the table are non-metals. Metalloids are elements that are placed between metals and non-metals.
Magnesium, strontium, and barium belong to group 2A of the periodic table. These have two valence electrons in their outermost shell. So these three elements have similar chemical properties. But the other given elements do not lie in same group so they have different chemical properties.
Therefore option B is the correct answer.
Learn more:
- Which ion was formed by providing the second ionization energy? brainly.com/question/1398705
- Write a chemical equation representing the first ionization energy for lithium: brainly.com/question/5880605
Answer details:
Grade: High School
Subject: Chemistry
Chapter: Periodic classification of elements
Keywords: magnesium, strontium, barium, Mg, Ba, Sr, periodic table, elements, group, period, chemical properties, similar.
Chemical properties are characteristics of a substance that describe how it interacts or reacts with other substances, leading to changes in its composition or structure. The correct answer is C. N₂, O₂, and F₂.
These properties help define the chemical behavior of a substance and are determined by its chemical composition and atomic/molecular structure.
N₂ (nitrogen gas), O₂ (oxygen gas), and F₂ (fluorine gas) belong to the same group/family on the periodic table, known as group 16 or the oxygen family. Elements within the same group tend to have similar chemical properties because they have the same number of valence electrons, which are the electrons involved in chemical bonding.
In the case of N₂, O₂, and F₂, they all have six valence electrons. This similarity in electron configuration leads to comparable chemical behavior, including their tendency to form covalent bonds, their reactivity, and their ability to gain electrons to achieve a stable octet.
Therefore, the correct answer is C. N₂, O₂, and F₂.
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