0
mol = mass/Mr
mol x Mr = mass Mr of tungsten is 183.84
so
1.2 x 183.84 = 220.61g
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
How do you calculate the specific gravity of known brix sugar solution?
Degrees Brix (symbol °Bx) is a measurement of the dissolved sugar-to-water mass ratio of a liquid. It is measured with a saccharimeter that measures specific gravity of a liquid or more easily with a refractometer. A 25 °Bx solution is 25% (w/w), with 25 grams of sugar per 100 grams of solution. Or, to put it another way, there are 25 grams of sucrose sugar and 75 grams of water in the 100 grams of solution. http://www.fermsoft.com/gravbrix.php
How do you prepare 3 percent hydrochloric acid from concentrated hydrochloric acid?
I always start a question like this by making 100 mL. 25% of 100 mL is 25 mL. So 25 mL HCl + 75 mL of whatever you are making it in (hopefully water).If your final volume is not an easy number, just multiply 25% times the final volume to get the volume you need of HCl, then subtract that number from your final volume to get the mL of the other component (water). When you add the two together, you should get your final desired volume. NOTE: I need to retract this answer for acids. The below answer is more correct than mine for HCl. My answer works for pure liquids.ANS#2:Always add acid to water, never add water to the acid when you prepare a dilution. Hydrochloric acid exists only as a solution of gaseous Hydrogen Chloride dissolved in water. Since it is a gas before dilution, you will need to calculate your ratios by weight/volume (w/v). At standard conditions the most concentrated solution of HCl(aq) is 40% (w/v). 38% (w/v) is known as 'concentrated grade'. 27% (w/v) is commonly available. You will be starting almost where you need to be if you are using 27% acid.Initial data:100 ml of 27% (w/v) has 27 grams of HCl dissolved into it. 25% would by the same reasoning, have 25 grams of HCl dissolved. The gram molecular weight of HCl is 1.00794 g/mol + 35.453 grams/mol = 36.461 grams/mol. That means we need to get either 25 grams of HCl or 0.686 moles into the final 100 ml. Calculations:Say you start with 27% (w/v) solution: 100 ml has 27 grams of HCl so (27/100 = 25/x , x = 92.59) 92.59 ml has 25 grams of HCl. Put 92.59 ml of the 27% solution into a container and slowly pour it into a container holding (100 ml - 92.59 ml =) 7.4 ml of distilled water. Et voila, you have 25% (w/v) Hydrochloric Acid. More Fun:You could also bubble the gaseous products resulting from reacting 0.686 moles of NaCl with excess H2SO4 through 100 ml of water and you have the same. 25% (w/v) HCl. (The calculations have been updated to correct the gmw for Hydrogen to 1.00794 g/mol.)
What is the mass percent of acetic acid?
A home-using acetic acid solution is lesser than 10% w/w.
What is 15ww solution?
I think you may have misspelled your question. This always makes it a bit more difficult to answer. But I'm going to make the assumption that your solution was labelled "15% w/w" Is that about right? Well, then, what that means is that your solution contains 15 parts by weight of of the solute, and 85 parts by weight of the solvent. For example, a solution of 15 grams of salt and 85 grams of water is a 15% w/w solution of salt in water. By the way, w/w means "weight in weight".
What is aliphatic amine?
Well that's what I was wondering.... are they just the same as normal amines
The amount of acetylsalicylic acid in a single aspirin tablet is 325 mg yet the tablet has a mass of 2 g calculate the mass percent of acetylsalicylic acid in the tablet?
Givens for question above: If the aspirin tablet is 0.4635g. it was titrated with 18.23mL of 0.1000M NaOH to neutralize. Then 33mL of NaOH was added to hydrolyze. then it was back titrated w/13.59mL HCl. what is mass of acetylsalicylic acid? what is the percent w/w?
Calculate the molarity of a solution of potassium permanganate and density is 1.04 gmL which contans 15.00 percent by mass?
C [mol/L] = w% * rho [g/mL] *1000 [mL/L] / (100% * M [g/mol] ) = = w% * rho [g/mL] *10 [mL/L%] / ( M [g/mol] ) = = 15.00 % * 1.04 [g/mL] *10 [mL/L%] / ( 158.034 [g/mol] ) = = 0.987 [mol/L] the molarity of the solution of potassium [in mol per liter] equals the content of KMnO4 by mass in percents multiply by density in g/mL multiply by 10 [mL/(L*%)] divide by molar mass of KMnO4 (M = 158.034 g/mol) This gives 0.987 mol/L. Thus the molarity equals approximately 1 M.
What is the density of solid metal cube2.0 cm on a side and that has a mass of 40.0 grams?
Mass = 40 gramsVolume = L x W x H = 8 cm3Density = mass/volume = 5 grams/cm3
How many grams of NaCl are needed to to make a NaCl solution 1 percent?
It depends how strong a solution you want to make. The molecular mass of NaCl is 58.44, so for a 1 molar solution you would dissolve 58.44 grams in water and make the volume up to 1 litre. For a 0.1 mol solution you'd take 5.844g to a litre, and a 2 mol solution you'd take 116.88g to a litre of water.
Percent Composition Molar Mass composition Molarity what has the units of g mol?
Molarity and molar are moles per litre. % comp is exactly that, just %. Mass comp seems like it would be w/w, i.e. a percentage. I have rarely heard this term but it is the closest. The answer you are looking for is molecular mass or atomic mass.
What is the molecular mass of glucose whose molecular formula is c6h12o6?
Well first you should determine the molecular mass of your glucose molecule, then you should divide the molecular mass of all the carbon by this, if I recall correctly. Should look something like (12X6) / ((6X12)+(12X1)+(6X16)) All multiplied by 100 to make it a percentage. Gives something like 40% which sounds like the right answer looking at the question.
A solid has a mass of 180 grams. What is the density?
Density is the mass divided by volume. You need to know its volume to get its density
How do you find the density of a rectangular prism if the mass is 100 grams?
It's the mass divided by its volume. The volume of a rectangular prism is length times width times height. So it would be 100 grams divided by the volume, and that volume = (L*W*H)
What is the phone number of the Richard W Bock Sculpture Musem in Greenville Illinois?
The phone number of the Richard W Bock Sculpture Musem is: 618-664-6724.
How many grams of KCl would you need to make 250 ml of a 0.5-M Solution w work?
Molar mass of KCl = 39 g/mol (K) + 35.5 g/mol (Cl) = 74.5 g/mol. A 0.5 M solution is required (0.5 mol/L or 0.5 moles per litre). 0.5 moles of KCl is 0.5 mol x 74.5 g/mol = 37.25 g. Dissolving this 37.25 g of KCl in a litre of water would give a 0.5 M solution. If 1 L or 1000 mL of 0.5 M solution contains 0.5 moles then 1 mL of the same concentration solution would contain 0.5/1000 moles and 250 mL would contain 250 x 0.5/1000 moles = 0.125 moles. 0.125 moles of KCl is 0.125 mol x 74.5 g/mol = 9.31 g.
What year was a smith and Wesson model 36 with serial number 664 j68 made?
You must call S&W
What is the ornaments can be determined for finding its density?
mass divided volumeDensity is determined by two measurements: the mass and volume of an object. The quotient of the mass and volume (mass divided by volume) is density. It can be represented as grams per milliliter...Quantity of mass (eg grams) in a standard volume (eg cubic centimeter). Weigh something, measure or calculate its volume, and then divide the weight by the volume. d = w/v
