A sample of an unknown hydrated compound weighed 16.450 grams. After heating, it had a mass of 10.319 grams. Calculate the percentage of water by mass in the unknown.

Q: A chemist prepares a solution of iron(III) bromide (FeBr,) by measuring out 132. umol of iron(III)…

A: Given data No of moles of iron(iii)bromide = 132 micromoles Volume of the solution = 350 ml…

Q: Calculate parts per million Br- in a sample of seawater that is 0.865 mMBr- with a density of 1.025…

A: The concentration of Br- in ppm is given below

Q: A 12.0 % sucrose solution has a density of 1.05 g/cm3. What mass of sugar is in 55 mL of this…

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Q: A 0.660 ? aqueous solution of KBr has a total mass of 77.0 g. What masses of solute and solvent are…

A:

Q: When an aqueous ethanol solution is 95% ethanol by mass, we can immediately deduce that 100 g of the…

A: In an ethanol solution, ethanol is the solute and water is the solvent.

Q: when you mix 20ml sugar and 50ml water in a 250ml beaker, what is the volume of the sugar and water…

A:

Q: How many grams of Xe are contained in 454 mL?

A: Density of a substance is given as the mass per unit volume. The density is directly proportional to…

Q: What is the mass of a golf ball traveling at 82.0 ms 1? The rest mass of a golf ball is 45.9 g, as…

A:

Q: A mass of 98g of sulfuric acid, H2SO4, are dissolved in water to prepare a 0.50M solution. What is…

A: In this question, we want to determine volume of the Solution in Liter unit.  You can see details…

Q: A chemist has two different gasohol mixtures available. One contains 20% alcohol and the other 12%…

A:

Q: What is the percent by mass KBr of a solution that contains 54.5 grams of KBr and 100.8 grams of…

A: The concentration of the solution is defined as the amount of solute present in the solution. In a…

Q: What volume (in L) of concentrated potassium hydroxide solution (21.5 mol/L) is required to prepare…

A: This is a dilution problem. Here the concentration of concentrated KOH solution is given. We have to…

Q: 18/8 stainless steel is made up of 18% (m/m) chromium and 8% (m/m) nickel in iron. What mass of iron…

A: Mass percentage of chromium = 18 % Mass percentage of Nickel= 8% Mass percentage of iron = 100 - (18…

Q: Vinegar is a solution of acetic acid (the solute) in water (the solvent) with a solution density of…

A: Given : Concentration of vinegar = 0.80 M And density of vinegar solution = 1010 g/L Assuming 1 L of…

Q: If ammonia is dissolved in water and the total weights are 80 g at 19%, what are the weights of…

A: The mass of the solution is = 80 g The percent concentration of the solution is = 19 % The weight of…

Q: A solution is prepared by dissolving 3.57 grams of magnesium bromide, 8.1 grams of ammonium…

A: Total mass of solution is the addition of the masses of solute and solvent (in grams).…

Q: A student working on this lab found the mass of their sample after the first heating to be 30.6057…

A: Given information: Mass of sample at first heating = 30.6057 g Mass of sample after 5 minutes =…

Q: Assume household vinegar contains 5.00% acetic acid by weight and that the density of vinegar is the…

A: Given,  household vinegar contains 5.00% acetic acid by weight.  And the density of vinegar is the…

Q: Assume the seawater in the world's oceans has a salinity of 3.50% NaCl by mass. Calculate the total…

A:

Q: Imagine you are working in a lab, and you want to prepare a solution of cobalt(II) chloride. You…

A: Given the mass of unknown hydrate of cobalt(II) chloride, CoCl2.xH2O = 1.0096 g mass of CoCl2(s)…

Q: A chemist has a 19.50g sample of drinking alcohol (ethyl alcohol). what is the volume ogf the…

A: The relationship between mass and volume is given below.

Q: density of water= 1 g/ml   volume of water = 12ml   mass of water= ?  mass of solute = 1g…

A:

Q: Vinegar is a solution of acetic acid (the solute) in water (the solvent) with a solution density of…

A: Given : Concentration of vinegar = 0.80 M And density of vinegar solution = 1010 g/L Assuming 1 L of…

Q: 1. What pieces of apparatus or equipment are used for measuring: a. Temperature? b. Small amount of…

A: Answers of above questions given below.

Q: What mass of a 6.0% NaOH solution contains 12 grams of NAOH? Enter your answer in grams in the space…

A: The mass of solute in gram present in 100 g solution is known as the mass percent concentration of a…

Q: What is 393.83 kJ/mol rounded to three significant figures?

A: Based on the significant figures rule, the number to be rounded off is followed by digit zero or…

Q: 100 mL of water was mixed in 100 mL of 100 Proof alcoholic beverage. What is the percentage by…

A: percent by volume one of the concentration unit  here we are required to find the percentage by…

Q: What is the maximum amount of silver in grams that can be plated out of 4.8 Lof an AGNO, solution…

A: Given volume of solution = 4.8 L density of solution = 1.01 g/ml

Q: 1. What is the percent by mass of 6 g of copper (II) sulfate dissolved in 84 g of water? 2. A…

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

Q: A mixture is made by combining 1.51 lb of salt and 4.73 lb of water. What is the percentage of salt…

A: Percentage by mass or mass percent (w/w) % is defined as the ratio of mass of a substance to total…

Q: A student in the laboratory needs a 0.125 M sulfuric acid solution, H,SO,. What volume in mL, of a…

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

Q: In a student experiment, the empirical formula of a copper halide was found by adding aluminum metal…

A: Empirical formula is the simplest chemical formula that represents a compound. It is related to…

Q: How many grams of solid NaNO3 came out of solution after cooling? Express your answer in grams to…

A: A). Solubility of NaNO​​​3 at 20°C = 88g/100g H​​​​​​2​​​​O 100g of H​​​​​2 O can dissolve → 88g of…

Q: give a particulate-level explanation of why ice (solid water) is less dense than liquid water?

A: Density of ice     = 0.9168 g/cm3 Density of water = 1.00g/cm3 Density gives the measure of how…

Q: A chemist must prepare 0.250 L of 1.00 M aqueous sodium carbonate (Na, CO, working solution. He'll…

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Q: 4. (a) The sodium ion did not take part in this chemical reaction. What do we call such an ion? (b)…

A: sodium ions are spectator ions and undergoes solvation that is gets surrounded by negative pole of…

Q: the volume of an irregular shaped rock is determined by displacement. when the rock is added to…

A: Given: The initial volume of water in which the rock is added = 38.5 mL. The water volume rises to…

Q: A chemist prepares a solution of iron(III) bromide (FeBr,) by measuring out 7.3 µmol of iron(III)…

A: Molarity : Moles of solute present per liter of solution is called molarity of that solution.…

Q: 18/8 stainless steel is made up of 18% (m/m) chromium and 8% (m/m) nickel in iron. What mass of iron…

A:

Q: What is the percent by mass NaCl of a solution that contains 85.7 grams of NaCl and 104.1 grams of…

A: The percent by mass of NaCl of a solution is calculated by dividing the mass of NaCl by the mass of…

Q: what is the volume of a single drop of substance if 10 drops is equal to 1.549cm3?

A: Given that the volume of 10 drops of substance is 1.549 cm3. By relating this condition volume of…

Q: A medium sized carrot weight 61 g and contains 6 g of carbohydrate. What percent by mass of the…

A:

Q: A student heated a hydrated salt sample with an initial mass of 5.322 g. The sample was heated to…

A: Given : Initial mass of hydrated salt = 5.322 g And mass of salt after reheating = 2.798 g

Q: A chemist prepares a solution of silver(I) nitrate (AGNO,) by measuring out 413. umol of silver(I)…

A:

Q: A 195 mL sample of ocean water contains 7.0 gg of NaCl. What is the molarity of the solution with…

A: Given,  Mass of NaCl in ocean water= 7.0g Volume of ocean water = 195 mL Molarity of NaCl solution…

Q: mixed

A: According to the question, we need to determine what is the volume percent of sodium hydroxide and…

Q: A chemist prepares a solution of magnesium fluoride (MgF,) by measuring out 0.0152 µmol of magnesium…

A: Given that,  Moles of MgF2 added to 200 mL(= 0.2 L) flask = 0.0152 µmol = 0.0152×10-6 mol

Q: What is the percent by volume of ethanol in water if you use 500ml of ethanol and 900ml of water?

A: Given: Volume of solute (ethanol) = 500 mL Volume of solvent (water) = 900 mL

Q: What is the percent by mass KBr of a solution that contains 88.7 grams of KBr and 119.7 grams of…

A: Given mass of KBr = 88.7 g Given mass of water = 119.7 g Mass percent is tells the concentration of…