Toluene (figure 1) is one compound used to increase the octane rating of gasoline If 20.0mL of toluene (d=0.867g/mL) is burned in air , how many grams of oxygen is needed for the complete combustion of the toluene

Q: The solubility of (NH4)2SO4 in water is 75.4 g of (NH4)2SO4 per 100 g of water. 34.2 g of (NH4)2SO4…

A: Solubility is defined as the maximum amount of solute that is dissolved in 100g of solvent. This…

Q: In a certain cement production, 100 kg of limestone containing 90% carbonates (Calcium and Magnesium…

A: We have given 90 % mass of carbonates , so first we would calculate total mass of carbonates in 100…

Q: Calculate the mass percent (m/m) of a solution prepared by dissolving 41.98 g of NaCl in 151.7 g of…

A: Q.1:  Given mass of solute, NaCl = 41.98 g  mass of solvent, H2O = 151.7 g  => Mass of solution =…

Q: Questions 1.39

A: The reaction is as follows,

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given is saturated carboxylic acid CnH2n+1COOH. With n = 6 Atomic weights as C = 12.01 g H = 1.01 g…

Q: Some communities add sodium fluoride to their water because of its benefits to the teeth. What is…

A: Find percent mass/mass of NaF mixed in wate. Given :  mass of NaF = 64.6 mg mass of water = 40000 g…

Q: 4. Nitric acid is a corrosive and strong acid. It has a molarity of 15 M when purchased from a…

A:

Q: 5. If you have 77g of pure ethanol mixed with 330 g of water, what's the % by mass of the ethanol?…

A:

Q: 0.50 M NaOH used.  I need to calculate these 3 things based off the results from attached "Data…

A: Given Data: Average volume of NaOH used= 5.27 ml. Molarity of NaOH= 0.50 M Volume of vinegar used =…

Q: a) For 8.85×10−3 M LiOH, determine [OH−] and [H3O+]. Express your answers in moles per liter to two…

A: (a)Given, 8.85*10-3M LiOH

Q: 2. Each part per million (ppm) concentration of CO2 in the atmosphere is the equivalent to a global…

A: 2) According to the question, 1 ppm of CO2 in the atmosphere = 2.13 billion metric tons. Change in…

Q: Each farm is 333.0 acres and for each acre on the farm 135.0 bushels of corn are produced. Each…

A: Here we need to find the total nitrogen consumption for growth of the corn produced in each firm.

Q: While in Europe, if you drive 101 km per day, how much money would you spend on gas in one week if…

A: Distance traveled per week:101 * 7 = 707 km707 *0.6214 = 439.32 milesWhere 1Km is equivalent to…

Q: 5. In a flask, you heat a mixture of 735.4 g of sodium nitrate and 700.0 grams of water until all of…

A: Given that, Mass of sodium nitrate dissolved in 700 g hot water = 735.4 g Mass of sodium nitrate…

Q: If a student wants to make 235.0 mL of a 3.25M stock solution of CuCl 2, how many grams of solid,…

A: Given : Volume of stock solution = 235 ml Molarity of stock solution = 3.25M

Q: Wine goes bad soon after opening because the ethanol  CH3CH2OH  in it reacts with oxygen gas  O2…

A:

Q: A chemist adds 405.0 mL of a 0.64M potassium iodide (KI) solution toa reaction flask. Calculate the…

A: Given: Volume of solution = 405.0 mL = 0.405 L                                 (Since 1 L = 1000 mL)…

Q: high-performance heater that burns propane, C3H8(g), is adjusted so that 100.0 g of O2(g) enters the…

A: .According to the question, high-performance heater that burns propane, C3H8(g), is adjusted so that…

Q: Q2// The four-cylinder engine of a light truck owned by a utility company has been converted to run…

A:

Q: Since the pandemic has hit, more people are growing their own gardens and processing the fruits of…

A: Each quart jar requires = 6.05g alum So, 50 quart jars would require = 6.05*50 g = 302.5g alum %…

Q: 5.00-wt% aqueous sulfuric acid solution (density -1.03 g/ml.) flows through a 45-m long pipe with a…

A: (a) 5 weight percent solution of sulfuric acid is being considered. That means in every 100 g of the…

Q: A farmer applies 1655 kg of a fertilizer that contains 10.0% nitrogen to his fields each year.…

A:

Q: When 2.00 grams of KMNO4 (MW = 158.0 g/mol) is dissolved into 100.0 mL of solution, what normality…

A: Given,  a). Mass of KMnO4 = 2.00 g Molar mass of KMnO4 = 158.0 g/mole  Volume in mL = 100.0 mL  What…

Q: 3. Biogesic for Kids is a paracetamol suspension. After letting it sit undisturbed, you see a layer…

A: Biogesic for kids is a paracetamol suspension. The suspension is filtered to get a white solid. The…

Q: In a certain cement production, 100 kg of limestone containing 90% carbonates (Calcium and Magnesium…

A: given data is  limestone is 100kg with 90% carbonates  amount of carbon dioxide produced is 28 cubic…

Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Q: [OH-] = 1.0 x 10-7 Express the concentration to two significant figures and include the appropriate…

A: Given-> [OH^-] = 1.0 × 10^-7 M   If [H3O^+] is 1.0 × 10^-7 M => then it is neutral .

Q: Question 4 – Write text or insert photo of your answer You see a sale on vinegar at two different…

A: Mileage of car = 0.090 L/km…

Q: A chemist adds 445.0mL of a 0.024M copper(II) sulfate (CuSO4) solution to a reaction flask.…

A: Given data,

Q: A chemist adds 1.90L of a 0.106 M potassium dichromate K2Cr2O7 solution to a reaction flask.…

A: We have to predict the millimoles of chemical added.

Q: 16. Concentrated glacial acetic acid is 99.7% H3CCO2H by mass and has a density of 1.05 g/mL. What…

A: Given,  Concentrated glacial acetic acid is 99.7% H3CCO2H by mass i.e. 99.7 g acetic acid in 100 g…

Q: An analytical chemist weighs out 0.280g of an unknown diprotic acid into a 250mL volumetric flask…

A: As per the data given in the question,Weight of unknown diprotic acid = 0.280 gVolume of solution…

Q: Driving across the desert, the sign says 79.5 miles to the next gas station. If your car gets 21.2…

A: The car gets 21.2miles/gallon. The distance of the next gas station= 79.5 miles. Gallons of gas…

Q: A chemist adds 195.0mL of a 1.5M barium acetate (Ba(C2H3O2)2) solution to a reaction flask.…

A: Molar mass of barium acetate = 255.43 g/mol

Q: A chemist adds 210.0mL of a 0.248 mol/L barium chlorate (Ba(ClO3)2) solution to a reaction flask.

A:

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: An analytical chemist weighs out 0.083 g of an unknown monoprotic acid into a 250 mL volumetric…

A: find the moles of base.  then find the moles of mono protic acid  then find the molar mass using…

Q: If 53.0 g of KClO3 was transferred into 125.0 g of water at 30.0 celcius. how many grams of KClO3…

A: NOTE : In question, the solubility of KClO3 is not given with proper units. The solubility of KClO3…

Q: Cyanocobalamin, commonly known as Vitamin B12, is generally used in formulating multivitamins. If…

A:

Q: Wine goes bad soon after opening because the ethanol (CH,CH,OH) dissolved in it reacts with oxygen…

A: Answer:- This question is answered by using the simple concept of stoichiometry which involves the…

Q: You plan to prepare 500 mL of 0.01 M NaCl solution, and you have 5.00 L of a 1.00 M stock solution…

A: Dilution of the solution:When we dilute a concentrated solution with pure water, the mole of solute…

Q: f an industrial worker knows that his chemical process is 87.3% efficient and he needs to collect…

A: Percent yield=actual yieldtheoretical yield×100It is given that chemical process is 87.3% and 100.0…

Q: (0-1) Activated carbon, also called activated carbon, is obtained by carbonization of organic…

A: The complete sentences by underlining the correct phrases are given as follow : The process of…

Q: A chemist adds 280.0 mL of a 1.32M iron(III) bromide (FeBr,) solution to a reaction flask. Calculate…

A: Volume of FeBr3 added to the flask = 280 mL = 0.28 LMolarity of this FeBr3 = 1.32 M = 1.32 mol/L…

Q: Solid ammonium carbonate, a predecessor to modern baking soda and baking powder, forms gaseous…

A: The decomposition of ammonium carbonate to produce ammonia and carbon dioxide is as follows:…

Q: A chemist adds 305.0 mL of a 0.41M barium chloride (BaCl₂) solution to a reaction flask. Calculate…

A: Given,  Volume of solution = 305.0 mL                                     = 0.305 L  Concentration…

Q: How many grams of chlorde are in 5.00 litres of Seawater if the molar concentration of chloride is…

A: The mass of NaCl present in 5L sea water is 169.9529 g.

Q: A chemistry student needs 5.00 g of acetic acid for an experiment. She has available 300. g of a…

A: The concentration of a substance can be measured in terms of mass by mass percentage. This…

Q: What is the average flow rate in cm3/s of gasoline to the engine of a car traveling at 100 km/h if…

A: Volume of gasoline consumed in 1 hour = 100 km/h10 km/L =100/10 = 10 L/h Average flow rate of…

Q: A chemist adds 350.0 mL of a 0.039 umol/L barium chloride (BaCl,) solution to a reaction flask.…

A: Volume of BaCl2 added, V = 350 mL = 0.350 L Molarity of BaCl2 , C = 0.039 umol/L = 0.039 × 10-6…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.