pH II

Q: A neutral solution of water at a particular temperature has a concentration of OH- of 4.5 × 10-7 M.…

A: Water molecule can act as acid as well as base. Hence it can give or take H+ ions. The auto…

Q: 0.23 M potassium acetate could be written as 2.3 mmol KC2H3O2/L true or false

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Q: What is the equivalent in joules of 126 Calories?

A: joule and calories are the unit of energy , joule is the SI unit of energy.

Q: 9.Polymer used as a synthetic fiber in stockings or in rope. a) Dacron b) Polystyrene c)…

A: 9) different polymers are used for different purposes.  10) polymers can be prepared by addition or…

Q: A clinic had 25 patients on Friday morning? If 21 patients were give flu shots, what percentage of…

A: 1.Total no. of patients on Friday morning = 25 Patients received flue shots = 21 2. Volume of IV…

Q: What is the mass of lead in 7.8⋅10^3  g of blood if the lead content is 0.40  ppm?

A: ppm, i.e., parts per million is defined as the mass of a solute (in milli gram) present in 1 L of…

Q: A doctor has ordered that a patient be given 3.00 g of glucose, which is available in a…

A: A numerical problem based on unit conversion, which is to be accomplished.

Q: PNO= ?

A:

Q: Convert 1335 mm Hg to Pa

A: Millimeters of mercury is a non-SI unit of Pressure. The symbol for millimeters of mercury is…

Q: Consider these reactions: Reaction 1: H₂(g) + Cl₂(g) 2HCl(g) AH-184.6 kJ Reaction 2: 20F₂(g) O₂(g) +…

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Q: The quantity 26.0 kJ is equal to how many calories?

A: We have energy as 26.0 KJ . We have to convert it to Calorie .

Q: How many significant figures are present in the following measurement?   volume of 0.1004 M BaCl2…

A: No.of significant figures in 12.67 mL   is   4.  The significant figures are,      1    2    6    7…

Q: 3295 kcal 13786.28 kJ 0.135 5.31 x 10 J kcal Incorrect

A: Given :-  3295 kcal  5.31 × 106 J  To convert :- 3295 kcal to kJ 5.31 × 106 J to kcal

Q: A doctor orders that a patient recieve 2.8 X 10^-3 mole of sodium chloride. The only solution…

A: Given: Amount of NaCl patient received = 2.8×10-3 mol Solution available contains 1.00 g per 100 mL…

Q: A patient needs 1.5 g of a solid must be given to the patient pe O 60 tablets

A: The dose of a drug: it is the quantitative amount taken by patient for the intended medicinal effect…

Q: Compare Solution X to Solution A, Solution B, and Solution C. Solution X 8 Solution A Solution B…

A: Molarity= i × (no. of moles of solute/volume of solution)

Q: otes: # of significant figures in the ans [NAOH] = 2.0 x 10³ M.

A: 6) [OH-] = 3.5×10-2 [H3O+] = 1.0×10-14/3.5×10-2    = 2.9×10-13 M 7) [NaOH] = 2.0×10-3 M As, NaOH is…

Q: An allergen preparation requires adding 0.1 cL of an allergen solution to 2.5 mL of normal saline.…

A: Volume of allergen solution (V1) = 0.1 cLVolume of normal saline solution (V2) = 2.5 ml

Q: Class A 25 mL Pipette Calibration Actual Volume Mass of Water Delivered, g Calibration Initial Mass,…

A: Data given: Calibration # Initial mass, g Final mass, g Mass if water delivered, g Actual volume…

Q: 77. Three different 25.0 g samples of solid pellets are added to 20.0 mL of water in three different…

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Q: Fluoride ion selective electrodes obey the following equation: E(V) = K - B(0.0592)log[F] where the…

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Q: The maximum speed a chicken can run is 9.3 miles per hour. How fast is this in meters per second?…

A: According to bartleby guidelines only one question is answerable  Speed =9.3 mile/hour Convet this…

Q: Q4. A city's water supply is fluoridated by adding NaF. The desired concentration of F is 1.6 ppm.…

A: This is  simple problem of calculating the amount of solute needed to form a solution of desired…

Q: భారతశ్శిం ం YouTube Maps News 0 Friend Requests PlatformManageme... Sy solve for x, 5/(x+1 6.82 The…

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Q: A physician has ordered 0.50 mg of atropine, intramuscularly. If atropine were available as 0.10…

A: Dosage of atropine needed = 0.50 mg Available solution of atropine = 0.1 mg/mlThe physican would…

Q: You measure 1.5232 g of oxalic acid on an analytical balance, add it to a 250-mL volumetric flask…

A: moles of oxalic acid= concentration of oxalic acid x volume of oxalic acid used Given…

Q: On a balance mass an amount of potassium hydrogen phthalate (KHP) needed to neutralize approximately…

A: KHP is Potassium Hydrogen Phthalate. Molarity of NaOH = 0.1M  Volume of NaOH solution. = 12 mL =…

Q: TCDD, also called dioxin (C12H4Cl4O2, molar mass 322.0 g/mol), is a potent poison. The average…

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Q: The mass of a beaker is 5.333 g. After 5.00 mL of a concentrated hydrochloric acid solution is…

A: Given the weight of empty beaker and also given the weight of beaker with HCl.  Hence, the weight of…

Q: The following particulate-level diagram best represents a(n).

A: We are given a particulate-level diagram as follows:

Q: What might you observe during this double replacement reaction? NaOH (aq) + MgCl₂ (aq) → 2NaCl +…

A: Given reaction is :  2NaOH (aq) + MgCl2 (aq) ----> 2NaCl + Mg(OH)2   Here aqueous Sodium…

Q: What volume of iron (density 7.87 g/cm3) would be required to balance a 2.80 cm3 sample of lead…

A: Given- Density of iron = 7.87 g/cm3 volume of lead sample = 2.80 cm3 (V1) Density of lead = 11.4…

Q: bleach container costs $5.98 and it has a volume of 2.4 ml what is the cost per gallon? The density…

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Q: If a person has a blood glucose level of 106 mg / 100. mL, a level that can cause brain damage, what…

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Q: Is the solution of ammonium chloride in water an exothermic or endothermic process.

A: When ammonium chloride is dissolved in water, it produces an endothermic reaction, i.e. energy is…

Q: A 1185 mL sample of drinking water was found to contain 20.5 mg of lead. Calculate the concentration…

A: Given: Volume of water sample=1185 mL=1.185 L Mass of lead=20.5 mg

Q: The diagram represents a solution an element a compound a heterogeneous mixture

A: In this question, we will Identify this give diagram represent , a solution or a Element or a…

Q: Decide whether each of the diagrams shown below is displaying qualitative or quantitative data.

A: Qualitative data gives the idea of composition of a mixture. It includes the physical appearance,…

Q: Hi, A 0.750 gram samples of sodium carbonate required 35.8 mL of a sulfuric acid solution complete…

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Q: 114.9 kj into kilocalories

A: Given that,    114.9 kj into kilocalories For conversion ;     1 KJ   = 0.23906 Kilocalories

Q: A pharmacy technician is asked to dispense 250 ml of medicine, each dose of which must contain…

A: Mass drug = Volume x concentrationNumber of days = Total mass of drug/Mass of drug given in a day

Q: Post lab report Lab 6 (supplemental): Pressure of gas mixture in a straw- measuring the amount of…

A: The explanation is given below-

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.