What is the concentration of a solution obtained by diluting 30 mL of a 45% w/v solution to a final volume of 250 mL?

Q: Starting from the initial system, a combination reaction occurs at Starting from the initial system,…

A: Consider the order given with numbers assigned to each system as Initial system, as stated in the…

Q: How many moles of hydrogen molecules are needed to react with one mole of oxygen molecules?

A: Given: Moles of oxygen (no) = 1 mole.

Q: The mass of a liter of milk is 1.032 kg. The butterfat that it contains has a density of 865 kg/m3…

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Q: An irregularly shaped piece of metal of density 7.8g/cm3 weighs 429 grams when completely immersed…

A: Archimedes' principle states that when an object is fully or partially immersed in a fluid, it…

Q: What is the solubility of PbF₂ in a solution that contains 0.0600 M F⁻ ions? (Ksp of PbF₂ is 3.60 ×…

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Q: A tank originally contains 100gal of brine solution containing 20lbs of salt. At t=0, pure water is…

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Q: A balloon is filled with a 15% salt/ 85% water solution. Explain what will happen to the balloon if…

A: For this we need to learn about hypotonic solution and it's affect on the inner concentration.

Q: To increase the concentration of a solution, you would O increase the amount of solute O increase…

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Q: A 60.0 g of CaC2 reacts with water to produce C2H2 and 81.2 g of Ca(OH)2. The reaction between these…

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Q: Four moles of hydrogen sulfide, H,S, would consist of how many molecules? molecules

A: Given Data Number of moles n= 4 mol

Q: How would you measure the density of rock candy, which is irregularly shaped and water soluble?

A: As we know that the density can be calculated as, Density=massvolume

Q: After an injection of Drug Y, the concentration of the drug in the bloodstream drops at the contin…

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Q: An increase in the average kinetic energy of a sample of copper atoms occurs with an increase in: a.…

A: Given:  kinetic energy of copper atom

Q: The table lists the properties of four different samples. Sample Properties 1 always boils at 100° C…

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Q: How many moles of iron is in a 1kg sample of iron?

A: To determine No of moles in 1 kg sample of iron

Q: How many milliliters of a 60% alcohol should be used to prepare 3 L of 40% alcohol? O 4,500 O 2,000…

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Q: Three ingredients of black powder are___________,___________, and ___________.

A: Black powder is a mixture which is explosive in nature and used in firearms as well as blasting…

Q: The active ingredient in the allergy medication Claritin contains carbon (C), hydrogen (H), chlorine…

A: Given: The allergy medication of Claritin C22H23Cl N2O2 contains 1.424 x 1019 molecules

Q: How long would you have to work at an activity of 10? Kcal/min to lose 3.5kg of carbohydrates

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Q: A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the output erergy, in kJ…

A: Data provided:  Mass (m) = 75 kg Initial velocity (v0) = 0 m/s Final velocity (vf) = 8.0 m/s Time…

Q: How many oxygen atoms are in 32 moles of CO2?

A: Each mole of CO2 contains 2 moles of oxygen. 1 mole of any substance contains 6.023×1023 units of…

Q: write the balanced chemical equation for P+O2=P2O5

A: 2P+52O2 = P2 O5…

Q: Seawater has a salinity of 3.5%, meaning that if you boil away a kilogram of seawater, when you're…

A: Given data *The given mass of the seawater is ms = 1 kg *The mass of the NaCl is m = 35 g *The molar…

Q: The following data are given for a biogas digester suitable for the output of six cows. The volume…

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Q: An irregular sample of zinc has a mass of 23.21 g.  This sample is carefully placed in a graduated…

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Q: A sample of pure sodium has a mass of 15.7 g. Calculate the number of moles in the sample and sodium…

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Q: The acidity or alkalinity of a solution is defined by pH = –log[H+] where [H+] is the hydrogen ion…

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Q: how many grams are in 2.70 x 10^24 molecules of P^4

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Q: Calculate the number of moles and atoms/molecules from the following:          a. 67.83 grams of H2O…

A: Part A. Molecular mass of H2O  is 18 g/mol. Therefore, 1 g=118 mol Hence, 67.83 g=118×67.8367.83…

Q: The relative density of a substance is the ____.   A) ratio of its density to the density of water…

A: The relative density of a substance is the ratio of its density to the density of…

Q: In Europe, nutritional information is given in kilojoules instead of nutritional calories. A packet…

A: The given data are listed below.

Q: You have a sample of 125 g of tetrahydrofuran. Calculate the pressure at which this sample would be…

A: Given Data: Mass of sample m= 125 g=0.125 kg Temperature T = 54 C = 327 K The molecular weight of…

Q: A 20 liter stirred tank carry a sugar solution at a concentration of 150 grams per liter. If a…

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Q: What is the mass of 0.75 moles of (NH4)3PO4? O 111.75 g O 121.75 g O 131.75 g O 101.75 g

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Q: 10g of K2SO4 is dissolved into 1000g of water. The freezing point of the solution is -.0.29 degrees…

A: Van't Hoff factor (i) is the measure of degrees of dissociation/association of a compound. i =…

Q: What is the % M/M if 8.0 g copper is added to enough zinc to produce 100 g of an alloy?

A: Percentage fraction of mass %M/M=MCuM×100%

Q: The conversion of cyclopropane in the gas phase is a first-order reaction with a rate constant of…

A: The first order reaction is given by  where, Ro is the initial activity, R is the final activity, t…

Q: Give a reason why soda drinks should be in plastic bottles rather than in aluminum cans?

A: A typical soda drink may contain acids like citric acid which can react with metallic containers and…

Q: Gasoline burning in your car engine is an example of a physical change and the product and reactants…

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