The temperature of a liquid is 15oC.  What is this in K?

Q: An aqueous solution has a mass percent of solute of 18.4%. The density of the solution is…

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Q: In the table below, use your most important scientific instrument (your calculator) to fill in the…

A: Since you have asked a question with multiple sub-parts we will solve first three sub-parts for you.…

Q: 1. What is the normality of a solution that contains 2.5 grams of Na:S2O3.5H2O in 500 ml water?

A: Normality is defined as the gram equivalent weight of solute dissolved in one liter of solution.…

Q: Which is NOT directly attributable of property of water? A. The top of a lake freezing B. The…

A: Some important Characteristics of water  (1). polarity, (2). cohesion, (3). adhesion, (4).…

Q: How many grams of N a Cl would need to be added to 558.00 grams of water to lower the freezing point…

A: Given : freezing point of solution = -12.8 oC. And mass of water i.e solvent = 558.00 g = 0.558 Kg…

Q: Hot-air balloons float because the air caught inside the balloon is heated up by a burner, making it…

A: The density of a compound is determined by the ratio between mass of the compound to its volume. It…

Q: Today's high is supposed to be 277K! WOW! What is that temperature in °C & °F?

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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: If a 25.0 g sample of copper shot at 458 degrees C is placed into 125 g water at 19.6 degrees C,…

A: Given: Mass of copper= 25.0 g Mass of water= 125 g Initial temperature of copper= 458 C Initial…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

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Q: Q3/ A- Calculate the molarity and normality of a solution containg 16 gm of K2SO4 in 500 ml of…

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Q: The molar volumes of pure acetone and pure chloroform at room temperature are 72.0 cm^3 and 81.0…

A: The volume of one mole of acetone is = 72.0 cm^3 The volume of one mole of chloroform is = 81.0 cm^3…

Q: 750 mK/s to K/s?

A: Step 1mk/s means “millikelvin per sec” and K/s means ‘Kelvin per sec”Here, conversion of mk/s to K/s…

Q: 11) Sn,S, is written as SnS, instead by dividing by the common factor of 2 terli ens O

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Q: A www-awu.aleks.com/a O STATES OF MATTER Solving for a gaseous reactant 0/5 The great French chemist…

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Q: The normal boiling point of nitrogen is -195.75 •C. What is this temperature in Kelvin

A: Normal boiling point : The boiling point of a liquid at 1 atmospheric pressure.

Q: Twenty grams of potassium dichromate (K₂Cr₂O) is dissolved in 150 mL of water What is its normality…

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Q: What is the mass of an object that has 20 N of force and acceleration of 4 m/s2

A: According to Newton's second law of motion, F = m a F is the force m = mass a = acceleration.

Q: NH2, 0°C G COOH SOCI, F reflux O,N

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Q: Use the ΔHof data in Table A4.3 to calculate the value of ΔHorxn for the following chemical…

A: The given reaction is:

Q: 7. Which of the following processes are chemical changes? Give reasons. a) Making a Salt Solution.…

A: There are two types of changes that can occur in a process: S.No Physical changes Chemical…

Q: A common antifreeze for car radiators is ethylene glycol, CH2(OH)CH2(OH). How many milliliters of…

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Q: How many grams of N a Cl would need to be added to 493.00 grams of water to lower the freezing point…

A: Depression in freezing point is defined as the decrease in freezing point temperature  of any…

Q: 1. Calculate the normality of potassium permanganate (MW: 158.034 g/mol) if 0.2142 g of sodium…

A: Normality is used for measuring concentration of a solution. Concentration of solution can also be…

Q: What is the symbol for the quantity defined by this expression: - log [H3O+]

A: This expression tells that the blank is the negative logarithm of the hydronium ion concentration.…

Q: Gypsum is the hydrate of calcium sulfate, CaSO4 · 2 H2O.  It is the primary material in sheet rock,…

A: Molar mass of CaSO4.2H2O = Atomic mass of Ca + Atomic mass of S + 4 × Atomic mass of Oxygen + 2 [ 2…

Q: 1.180V) and a standard Fe Fe2+ ha

A: The cells in which chemical energy is converted into electrical energy If we construct a cell with…

Q: 3. A solution of 20.91 % by weight H2SO4 has a specific gravity of 1.150. What is the normality of…

A: Weight % of H2SO4 has specific gravity of 1.150 Density of H2SO4 solution = 1150 kg/m3 M.W of H2SO4…

Q: Convert 252 K to °C.

A: Temperature is a physical quantity which measures the amount of heat in a body or a system.…

Q: 1. Complete the following table with the proper equivalent temperatures: °C °F K °R -40.0 77.0 698…

A: Write the conversion from C to 00F. 0F=1.8C + 32 Write the conversion from C to 00F. 0C=(0F-32)÷1.8…

Q: H20 KMNO,

A: Given reaction is syn dihydroxylation of alkene with KMnO4(potassium permanganate)

Q: Gypsum is the hydrate of calcium sulfate, CaSO4 · 2 H2O.  It is the primary material in sheet rock,…

A:

Q: The blood serum acetone for a person  is determined to be 18.7 mg of acetone per 100 mL of serum.…

A:

Q: gas (pure or mixture) 1 solute P/P(o) solvent c/c(o) pure solid or liquid

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Q: Pure oxygen diffuses through an aperture in 224 seconds, whereas a mixture containing 80% oxygen gas…

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Q: Wate is the Normality of hydrochloric acid contains 37.4 grams of HCl gas in one liter of its…

A: Given: The volume of the solution(V)=1 L The given mass of HCl(m)=37.4 g The molar mass of HCl=…

Q: log1o time for ball to drop mL H2SO4 Moles H2SO4 Time for ball to added drop (sec) added 0.50 1.00…

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Q: 2) For a separate job, you are asked to assemble a number of tricycles by attaching wheels to the…

A: No. Of complete frames=70 No.of rear wheels=123 No. Of front wheels=74 For 1 complete tricycle, no.…

Q: 4 PPM Moleculan yoomula ;- G# g0

A: C5H11OCl ( DBE = 5- (11+1/2)+1 = 6-6 = 0.

Q: (a) A solution of 20.91 % by weight H₂SO4, has a specific gravity of 1.150. What is the normality of…

A: (a) Given that -  Percentage of Sulfuric acid = 20.91%  Specific gravity of acid = 1.150    Then,…

Q: 1.104 A seientist elaims to have found a treatment for ear infections in children. All the patients…

A: Given: Scientist claim to have treatment of ear infection .  Patients were given treatment and it…

Q: What is wrong with the following statement? "The results of the experriment do not agree with the…

A: There are some experiments who's value comes near to the true value or the theoretical value.

Q: Gypsum is the hydrate of calcium sulfate, CaSO4 · 2 H2O.  It is the primary material in sheet rock,…

A: Weight of Gypsum( CaSO 4 · 2 H 2O)  = 21.05 g

Q: ) An aqueous solution of ethyl alcohol is made by transfering 4.72 mL of liquid ethyl alcohol to a…

A: % v/v = (volume of solute / volume of solution)x100

Q: A preparation of soda ash is known to contain 98.6% Na2CO3 (105.99 g/mol).  If a 0.678-g sample…

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Q: What is the force in newtons acting on a 5.2 kg package of nails that falls off a roof and is on its…

A: Since ,          F= m x a  where F= force          m= mass         a = acceleration

Q: A pipe leaks water at a rate of 1.24 mL/s. What is the rate of the water leak in L/hr?

A: Given, rate of water leak = 1.24 mL/s We need to convert the unit of water leak from mL/s to L/hr.

Q: How many liters of a 0.500  M  sucrose ( C12H22O11 ) solution contain 1.6  kg  of sucrose?…

A: We are given: concentration of sucrose = [sucrose] = 0.500 M Weight of sucrose = W = 1.6kg = 1600…