Oil spreads on the water to form a film 110nm thick. How many square kilometers(Km²) of the ocean will be covered by a slick formed from one barrel of oil(126L)

Q: In the US, alcohol proof is equal to twice the percent of alcohol (ethanol) by volume, so for…

A: Percentage volume by volume: is one of the ways to express concentration of solution. Formula is:…

Q: Phosphoric acid and magnesium hydroxide react to produce magnesium phosphate and water. If 45.00 mL…

A: Given: When phosphoric acid reacts with magnesium hydroxide, magnesium phosphate and water are…

Q: If an mL of Hydrochloric Acid is equivalent to 1.5mL of 0.5N Sodium Hydroxide, the volume of alkali…

A:

Q: Convert 39.8 kg of NaCl per 100 kg of water to kg mol of NaCl per kg mol of water

A: Mass of NaCl = 39.8 Kg  Mass of water = 100 Kg   Moles of Nacl = mass of NaCl / MW of NaCl = 39.8 Kg…

Q: A solid mixture consists of 30.9 g of KNO3 (potassium nitrate) and 5.2 g of K2SO4 (potassium…

A: As the given mass of the following salts is:-KNO3 = 30.9 gK2SO4 = 5.2 gThese salts are dissolved in…

Q: he Law of Conservation states that matter cannot be created nor destroyed during a reaction. How…

A: Hi, the first question is incomplete as the experiment is not given. Hence we are solving the second…

Q: astronauts on the International Space Station are staying​ healthy, so they have them routinely test…

A:

Q: 100.0 g lead(II) nitrate is reacted with 50.00 g potassium iodide (in plenty of water). How many…

A: The chemical equation for the reaction between lead(II) nitrate and potassium iodide is given as -…

Q: Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755…

A: Number of moles of a substance is equal to the mass of a substance divided by its molar mass.

Q: A stock solution of hydrochloric acid is prepared by dissolving 15.7 g hydrochloric acid in enough…

A: Given  mass of HCl = 15.7 gram  Volume of solution = 749 mL  1000 mL  = 1 Liter  749 mL    =…

Q: 4. When 2.00 grams of KMN04 is dissolved into 100.0 mL of solution, what normality results? How many…

A: Molarity is defined as the number of moles of solute dissolved in 1 L of solution while normality is…

Q: Wine is approximately 12% ethanol (CH3CH2OH) by volume. Ethanol has a molar mass of 46.06 g/moland a…

A:

Q: Muriatic acid is the commercial name for hydrochloric acid that can be purchased from hardware…

A: Consider the given information is as follows; Percent weight/weight = 33% Mass of HCl (solute) = 5.5…

Q: How many grams of CaCl2CaCl2 are needed to make 126.9126.9 g of a solution that is 39.539.5% (m/m)…

A: Solution concentration = 39.539% (w/w).That is 100g solution contains 39.539 g calcium chloride.

Q: Q4: You want to prepare 1L of a solution containing 1ppm Fe. How many grams ferrous ammonium…

A: 1- First we will calculate the mass of this given salt :  Concentration of this salt is 1ppm that…

Q: What is the percent by volume when 26.8 mL of butanol is mixed with 203.0 mL of water?

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Q: Sodium carbonate is often added to laundry detergents to soften hard water and make the detergent…

A: Given,Concentration of Ca2+ = 3.8×10−3 M = 3.8×10−3 mol/LConcentration of Mg2+ = 1.1×10−3 M =…

Q: How many grams of calcium hydroxide are required to completely neutralize 475 mL of 0.48 M…

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Q: The great French chemist Antoine Lavoisier discovered the Law of Conservation of Mass in part by…

A: Balanced decomposition reaction can be written using reactants. And the amount of HgO must be…

Q: Find the milliliters of 0.250M KOH needed to neutralize 115.0 mL of 0.834 M H,PO,. Write and balance…

A: The balanced chemical equation for the neutralization reaction between KOH and H3PO4 is  3 KOH +…

Q: KOH and NaOH are dissolved in water to form a 2.48 molar solution. If 42.9 g of NaOH are used and…

A: Given: Volume of solution = 1673 mL Molarity of solution = 2.48 M Mass of NaOH = 42.9 g

Q: What is the percent by mass of 25 g of sodium chloride dissolved in 100 g of water?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755…

A: The expression for calculating the molarity of a solution is as follows,…

Q: What mass of 7.25% NaOH solution is needed to provide 43.0 g of NaOH? (Give answer with correct sig…

A: Given  Weight % of solution = 7.25 %  Mass of NaOH  = 43 gram  Mass of solution = ?

Q: A solution is made when 233.1 g of NaCl is dissolved in enough water to form 936 mL of solution.…

A: Given Mass of NaCl is 233.1 g Volume of solution is 936 mL Density of solution is 1.06g/mL Using…

Q: A water sample collected downstream from a gold-mining operation returns a cyanide concentration of…

A: The gold cyanidation can be described as the cyanide procedure that is used for the extraction of…

Q: The product of 79.7 m x 9.31 m is m2

A: Given: 79.7m x 9.31m Both the given values have 3 significant figures with it.

Q: Roviee Topics The concentrations of pollutants are often reported as parts per million (ppm). Parts…

A: Given: Limit concentration for barium is 2.0 ppm.

Q: You dissolve 138.5 g of NaF in enough water to create a 1.50 L solution. If you take 150 mL of that…

A:

Q: A local water retention pond was found to have elevated levels of mercury concentrated as 14 ng per…

A: A mole is defined as the amount of substance containing the same number of discrete entities (atoms,…

Q: To prepare a fertilizer, an engineer dilutes a stock solution of sulfuric acid by adding 24.8 L of…

A: We have to calculate the mass of sulfuric acid in diluted solution.

Q: lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample…

A: The density of any substance or liquid is calculated by the formula: d=mV Where, m is the mass of…

Q: question 2 please

A: Given data:

Q: 65.  A 2.00-L bottle of a solution of concentrated HCl was purchased for the general chemistry…

A: Number of mol of HCl = given mass / molar mass = 868.8 g / 36.46 g/mol = 23.83 mol

Q: 1) Group 1 metals react almost instantly and violently with water, as a single replacement reaction…

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Q: You want to clean your whole bathtub (280 L) with vinegar but you can't afford 280 bottles of…

A: We are using here 100 mL of vinegar in 280 mL of bathtub then we can calculate the volume…

Q: How many grams of CaCl2CaCl2 are needed to make 623.4623.4 g of a solution that is 36.036.0% (m/m)…

A:

Q: what is the mass % of each component in the mixture?

A: Given :- mass of sugar = 2.00 g                mass of salt = 3.00 g               mass of solution…

Q: A stock sulfuric acid solution contains 98.0% of sulfuric acid, and its density is 1.840 g/mL. How…

A:

Q: 24.71 cm (24.71 m) of this solution is delivered from a buret, what amount of HCI has been…

A: Molarity is defined as the ratio of the number of moles of solute to the volume of solution in…

Q: Q: A chemist attempts to prepare some crystals of borax (sodium tetraborate, Na,B4O7.10H2O) by…

A:

Q: O CHEMICAL REACTIONS Calculating molarity using solute moles A chemist prepares a solution of…

A: Given, Note: 1 µmol = 10-6 mol Moles of FeBr3 = 85 µmol = 85 × 10-6 mol Note: 1 mL = 10-3 L Volume…

Q: a person consumes 4lts of oxígen (O2) per minute when breathing.how Many moles would that be per…

A: given:Vol of Oxygen consumed= 4LTime taken to consume = 1 mintotal time oxygen is taken in = 1 hr =…

Q: A person drinks 1.50 × 103 g of water, H2O, per day. How many moles is this?

A: Given,Mass of water = 1.50×103 gMolar mass of water is 18.015 g/mol

Q: Several years ago a tank car load (70,000 litres) of concentrated nitric acid spilled in a Denver,…

A: Given data,Volume of solution=70,000L=70,000×103mLDensity of solution=1.42g/mLConcentration of…

Q: ml of a solution

A:

Q: 3) A chemical supply truck breaks down in the desert, and the driver is running out of water. He is…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Sodium carbonate is often added to laundry detergents to soften hard water and make the detergent…

A: Given,3.8×10−3 M in Ca2+ and 1.1×10−3 M in Mg2+ The average capacity of a washing machine is 24.5…

Q: Apollo 13 Lunar Mission You are a NASA engineer. You are the chief engineer for the Apollo 13…

A:

Q: A chemist prepares a solution of vanadium(III) bromide (VBr) by measuring out 12. mg of VBr, into a…

A: Given, Note: 1000 mg = 1 g, 1000 mL = 1 L mass of VBr3 = 12. mg = 0.012 g Volume of the flask =…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".