What is the correct numerical value for the molar mass, in grams, of CO2 A. 12.0 B. 24.0 C. 44.0 D. 88.0

Q: A bag of popcorn that had a mass of 110.0g. After popping the bag its mass is 100.0g. After…

A: Percentage of water can be calculated by dividing the mass of water to mass of popcorn into 100.

Q: I figured out that .0068 moles CaCl2x2H2O are present in 1.00g CaCl2x2H2O. My next question is "How…

A:

Q: Ba(OH)2 (aq) + H,SO, (aq) → Baso4 (s)+ 2H,0 (1) What would you multiply "grams of barium hydroxide"…

A: Molar mass of Barium hydroxide is 171.34 grams of Ba(OH)2 per mole of Ba(OH)2 i.e. 171.34 g…

Q: Richards and Willard determined the molar mass of lithium and collected the following data.…

A: a) To find the mean molar mass of the obtained experiment values by Richard and Williard for…

Q: In an experiment done, a sample of water was found to contain 400 g of calcium per m³ of sample.…

A: Ppm or ppb are concentration terms Here we are required to express the mass of calcium in (a) Parts…

Q: how may moles is in 26.8g of water?

A: Molar mass of water = 18.01528 g/mol Given mass of water = 26.8 g No. of mol is given by: No. of…

Q: t snowed, it melted and now the temperature is going to dip below freezing, to -2.00 °C overnight.…

A:

Q: How many grams O in 221.8 g Fe(OH)g? Molar mass of Fe(OH)g is 106.867 Hint: 1 mole Fe(OH)3 has 3 mol…

A:

Q: Is the percentage error supposed to be : Subtract the accepted value from the experimental value.…

A: Accepted value = 84.2  Experimental or calculated  value = 81.403 By calculating absolute error, the…

Q: In chemistry, particles are counted by the: Group of answer choices common term scientific notation…

A: The particles are considered to be the smallest unit of a compound in the chemistry.

Q: How many moles are in 220.0g of NaCl? Round to 2 decimal places.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: A patient received 2.95 L of a 0.278 M glucose IV solution. How many moles of glucose were…

A: For glucose IV solution, Volume = 2.95 L Molarity = 0.278 M                             (As, 1M = 1…

Q: Calculate the volume in liters of a 0.0061 mM calcium sulfate solution that contains 9.00 mol of…

A: Given: [CaSO4] = 0.0061 mM moles of CaSO4 = 9.00 mol Converting concentration from mM to M: 1 M =…

Q: Natural gas is mostly composed of methane (CH4). In 6.07 g of CH4, how many millimoles of CH4 are…

A: Given, Natural gas is mostly composed of methane. Weight of methane =  6.07 g Molar mass of methane…

Q: How many equivalents of Mg*2 are there in 6.00 mol of Mg3(PO4)2? First we have to convert moles into…

A: Initially we have to determine the number of equivalent of Mg2+ in the corresponding phosphate of 1…

Q: Adding helium to a balloon increased its volume from 309.1 mL to 1.695 L. If the final number of…

A: Given data,  Initial volume of helium gas in the balloon ( V1) = 309.1 mL = (309.1/1000) L = 0.3091…

Q: Use the periodic table to calculate the GFW (molar mass) of Ca3(PO3)2 to 5 significant figures.  Do…

A:

Q: Your unknown hydrate is one of the following substances: CuSO4•5H2O or ZnSO4•7H2O,  calculating the…

A: Given - Unknown a experimental water percent: 3.33%  Unknown b experimental water percent: 10%…

Q: How manh stones are in 0.5 mol of stones

A: A mole is the amount of substance that contains 6.023×1023 chemical entities like atoms, molecules,…

Q: Adding helium to a balloon increased its volume from 462.0 mL to 1.510 L. If the final number of…

A: Avogadro’s law states that the volume of a gas is directly proportional to its molar amount at…

Q: ___________   to     ____________                 2AlCl3 → 2Al + 3Cl2             Given Units…

A: Mass of AlCl3 = 73.0 g Molar mass of AlCl3 = 133.34 g/mol Moles of chlorine gas produced = ?

Q: A wine is labeled 90 proof. What is the percent by volume? How many ml alcohol is contained in 450…

A: Given: Wine proof is 90.

Q: What are the table values for this molecule if given 12mL?

A: Given information,

Q: A 4.42 mol4.42 mol sample of KrKr has a volume of 631 mL.631 mL. How many moles of KrKr are in a…

A: Molarity = Number of moles/Volume (L)

Q: A 196 gram sample of glucose (C6H12O6) was used to make a 0.73 M solution. What is the volume of…

A: Given : Mass of glucose i.e C6H12O6 = 196 g And concentration of C6H12O6 in solution = 0.73 M

Q: A chemist mixes 69. g of diethyl ether with 43. g of heptane and 49. g of methanol. Calculate the…

A:

Q: Calculate the moles of 1.00 ft3 lead (II) sulfide with a density of 7.46 g/cm3.  Group of answer…

A: Given: Volume = 1.00 ft3  Since 1 ft = 30.48 cm3 So, volume = 30.48 cm3 Density = 7.46 g/cm3

Q: A chemist prepares a solution of calcium sulfate (CaSo,) by measuring out 0.0770 µmol of calcium…

A:

Q: 325.2 g sample contains 42.3% NaCl. How many grams of NaCl are in the sample?

A: Mass of the solution is = 325.2 g The concentration of the solution is = 42.3 % NaCl Mass of NaCl in…

Q: Label the diagram to correctly convert 2.25 moles of Ne to Liters of Ne at STP : 1 Mole of Ne : 2.25…

A: Given, moles of Ne = 2.25 moles At STP, Standard Temperature & Pressure volume occupied by Ne =…

Q: Borax, a common laundry product, is sodium borate decahydrate.  The chemical formula is Na2B4O7 ⋅⋅…

A: Using the molar mass of borax and molar mass of water we can find percentage of water.

Q: Calculate the number of moles in 143.0 grams of methane (CH4) gas.

A: In order to calculate number of moles of any compound or a gas we need mass  and molar mass of that…

Q: What is the molar mass of magnesium phosphate. **Be sure to select answer with the correct units!!…

A: Molar mass is the sum total of masses of atom each element in a molecule. It is the mass of 1 mol of…

Q: How many moles are present in 35.16 grams of X? (Assume that the molar mass of X is 18.42 grams per…

A: Mass of X = 35.16 grams Molar mass of X = 18.42 grams / mole

Q: a 5.000g sample that contained NaCl and BaCl2 *2H2O was heated. After heating the sample had a…

A: Given : Mass of sample of NaCl and BaCl2*2H2O = 5.000 g And mass of sample after heating = 4.688 g

Q: How do you find the average percent water in an unknown?

A: Let's say there is any unknown sample given with some mass M.

Q: What would you multiply "moles of helium" by to get the units "grams of helium"? moles He x (number)…

A: Simply use the mole relation for the conversion of moles into mass.

Q: convert  *26.30 μmole/mL into mole/L *0.556 g/cm3 into kg/L *.3.5760000x107 mm/s into km/h

A: The given conversions are shown as follows,

Q: Determine the formula weight of CaCl₂. Provide an answer to two decimal places.

A: FORMULA MASS: Every element in the periodic table has its own atomic masses. A chemical compound is…

Q: Calculate the moolar man of LON remember to give the arewer to 2 dedmal places, and include the…

A:

Q: A sample of Mg(NO3)2 has a mass of 71.5 grams. What is the molar mass of the Mg(NO3)2 please report…

A: No. Of moles = given mass ÷ molar mass

Q: Label the diagram to correctly convert 16.8L H2 to mole of H2 : 16.8 L H2 : 22.4 L H2 : 1 mol H2

A:

Q: What volume of N2 (g) is required to produce 200 L of NH3 (g)

A: Interpretation-  To determine the volume required for N2(g) to produce 200 L of NH3(g) -…

Q: How many molecules of ethane(C2H6) are present in 0.433g of C2H6? 3 significant figures

A: One mole of any compound contains approximatly 6.022 x 1023 atoms or molecules called as Avogadro's…

Q: Acetaminophen has the formula C8H9O2N Calculate the mass, in grams, of a .30 mole sample:…

A: From given data  moles of sample = 0.30 moles  Formula for mass  mass = molar mass × moles

Q: An extra-strength aspirin contains 0.500 g of aspirin. How many grains is this? (1 grain = 64.8 mg)

A: Given,mass of aspirin in extra-strength aspirin = 0.5 g = 500 mg1 grain = 64.8 mgSo,number of grain…

Q: Ocean water contains 3.4 sodium chloride by mass. What made of ocean water in gram contains 13.2 g…

A: Number of moles of a chemical compound is used to measure the amount of compound in the given…

Q: A 0.9801 g sample of an unknown hydrate was heated to drive off the water. The remaining anhydrous…

A: Since the loss in mass of the salt is due to the removal of water only  hence mass of water…

Q: A 185 gram sample of glucose (C6H12O6) was used to make a 2.52 M solution. What is the volume of…

A: Number of moles of glucose is equal to the mass of glucose divided by its molar mass. Write the…

Q: A different experiment has a copper unknown which has two moles of copper for every one mole of…

A: In the given unknown substance  2 mol. of copper is present for every one mole of the sample. % of…

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".