Question 4: How many moles is 3.52 x 10^24 molecular water?

Q: A chemist prepares a solution of potassium permanganate (KMnO4) by measuring out 2.5 μmol of…

A: Given, Note: 1 µmol = 10-6 mol moles of potassium permanganate (KMnO4) = 2.5 µmol = 2.5 × 10-6 mol…

Q: A chemist prepares a solution of sodium chloride (NaCl) by weighing out 2.346 g of sodium chloride…

A: Concentration (w/V) = wt of solute in gram /volume of solution in Litre (V ltr)

Q: Which piece of laboratory equipment can make the most precise measurements? Top-loading balance (in…

A: In chemistry laboratory we always prefer an instrument which is having more no. Of measuring units .

Q: Microbiologists use acid-alcohol when performing a cell stain of the pathogen Mycobacterium…

A:

Q: A student needs to determine density of a liquid. The student determines mass of an empty flask to…

A:

Q: The liquid substances mercury (density = 13.6 g/mL), water(1.00 g/mL), and cyclohexane (0.778 g/mL)…

A: Given: Density of mercury is 13.6 g/mL Density of water is 1.00 g/mL Density of cyclohexane is 0.778…

Q: A solution is labeled "(1.810x10^1) % sucrose by mass". If an experiment requires (7.79x10^1) g of…

A:

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

A:

Q: A chemist prepares a solution of copper(II) sulfate (CuSO,) by weighing out 30.0 g of copper(II)…

A: Given, mass of CuSO4 = 30.0 g Volume = 300 mL = 0.3 L

Q: Convert 32.5% to parts per thousand (ppt).

A: ppt = 10 x percentage

Q: A student performs an experiment to determine the molar mass of magnesium oxide. The student repeats…

A: The percent relative error can be calculated by dividing the absolute error by the actual value of…

Q: A chemist must prepare 125. mL of 865. mM aqueous barium chlorate (Ba(CIo,)) working solution. He'll…

A: Moles of both solutions will be same. M1 × V1 = M2 × V2

Q: a fish tank hold 35 gal of water. how many kilograms of water are in the fish tank.

A: A fish tank hold 35 gal of water. Here we are asked to calculate how many kilograms of water are in…

Q: A chemist prepares a solution of nickel(II) chloride (NiCl,) by measuring out 11. umol of nickel(II)…

A: The concentration of a solution is determined by the amount of solute dissolved in the solution. For…

Q: A chemist prepares a solution of magnesium fluoride (MgF,) by measuring out 0.0118 µmol of magnesium…

A:

Q: A chemist must prepare  225.mL  of  55.0mM  aqueous potassium permanganate  KMnO4  working…

A:

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

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Q: on average a drop of water has a volume of 50.0 microliters. What is this volume in dekaliters?…

A: Given :- volume of a drop of water = 50.0 microliters  To convert :- given volume to decaliters…

Q: A pycnometer is a glass flask with a tight fitting glass stopper that can be used to determine the…

A: Mass of clean pycnometer = 25.151 g Mass of clean pycnometer plus water = 42.481 g  Initial mass of…

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

A:

Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: Convert 3.25 × 103 terameters (Tm) into nanometers (nm).

A: Given information,    3.25 × 103 terameters

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: A student obtains the following data:  a- Mass of evaporating dish…

A: Mass of evaporating dish = 21.345g Mass of evaporating dish and saturated NaCl solution= 42.817 g…

Q: A chemist must dilute 20.6 mL of 22.0 mM aqueous aluminum sulfate (Al, (SO,)) solution until the…

A: In dilution, the millimoles or moles of solute remains same before & after dilution (Dilution…

Q: GenAlex Medical, a leading manufacturer of medical laboratory equipment, is designing a new…

A:

Q: The solubility of benzoic acid in water at room temperature is 0.54 g per 100 mL of water.  If 4.95…

A: Crystals are formed by a saturated solution and by the solute which is present in extra amount and…

Q: A chemist prepares a solution of barium chloride (BaCl,) by measuring out 48.6 g of barium chloride…

A: Assume whole volume of flask is occupied. Molecular mass of BaCl2 = 208 g

Q: A chemistry student needs 5.00 g of acetic acid for an experiment. She has available 250. g of a…

A: Given,  250 g of a 15.8% w/w solution of acetic acid in ethanol. And 5.00 g of acetic acid is needed…

Q: A chemist prepares a solution of potassium iodide (KI) by weighing out 119.4 g of potassium iodide…

A: The concentration of a solution represents the amount of the solute with respect to the mount of the…

Q: A chemist must prepare 450.mL of 370.mM aqueous potassium permanganate KMnO4 working solution.…

A: We have to calculate the volume of stock solution.

Q: www-awn.aleks.com O MEASUREMENT Deducing the unit missing from the solution to a basic qu.. A…

A: The given equation is

Q: Aqua regia is an acid mixture that can be used to dissolve gold. Aqua regia has a density of 1210.…

A:

Q: A jet airplane reaches 675./kmh on a certain flight. How long does it take to cover 291.m? Set the…

A: Given that the velocity is 675 km/h. The given velocity has to be converted to m/h

Q: +- 0.1mg As a result of the uncertainty of your measurements above, the actual mass of your empty…

A: The uncertainty estimation for measurement should consider both the measurement's accuracy and…

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

A:

Q: A chemist prepares a solution of silver perchlorate (AgClo,) by weighing out 2.40 kg of silver…

A: Concentration in g/dL = Mass of solute in g/Volume of solution on dL

Q: A chemist must prepare 275. mL of 5.00 mM aqueous calcium sulfate (CaSO,) working solution. He'll do…

A:

Q: Aqueous hydrochloric acid HCl will react with solid sodium hydroxide NaOH to produce aqueous sodium…

A: We know that. Number of moles=given mass/molar mass Molar mass of HCl=1+35.5=36.5 g/mol Molar mass…

Q: A 100g of water is mixed to 150g of alcohol (ρ = 0.76 g/ cm3 ). Calculate the resulting density of…

A: we know density is defined as the mass of substance upon volume density=massvolume

Q: Suppose you have 150. mL of a substance with a density of 48.0 g/dm3 and want to determine the mass…

A: Given:  Volume of the sample = 150 mL Density of the sample = 48.0 g/dm3 We have to calculate the…

Q: A chemist prepares a solution of potassium dichromate (K₂Cr₂O7) by measuring out 43.6 µmol of…

A: Given :-  No.of moles of K2Cr2O7 = 43.6 umol  Volume of solution = 300. mL  To calculate :…

Q: How many mL of 0.799 molar magnesium chloride must a scientist pour into a beaker to have 16.1 g of…

A: given, molarity of magnesium chloride = 0.799 molar weight of magnesium chloride = 16.1 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: A chemist prepares a solution of barium chloride (BaCl,) by weighing out 9.759 g of barium chloride…

A:

Q: A chemist prepares a solution of barium acetate BaC2H3O22  by measuring out  38.5g  of barium…

A: Molarity can be obtained by the given equation below:

Q: Aqueous hydrochloric acid  HCl  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A: The reacting substance which undergoes complete consumption and controls the quantity for product is…

Q: What is the equation of the line when the data in the table below is plotted? Mass is the independen…

A: First we will draw mass vs volume plot. Then we’ll try to figure it out the equation of the line…

Q: A chemist must dilute 82.6mL of 51.0 mM aqueous potassium permanganate  KMnO4 solution until the…

A: In the dilution process, the relationship between initial and final concentrations and volumes of…

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.