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If some of the hydrate splatters out of crucible would the calculation percent of water be higher or lowel why?
Jolusia
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What is the important of percent composition of water in the hydrate compounds?
because the compound will scoral
What is the percent of water in the hydrate for sodium sulfate?
This percentage is different for each chemical compound.
Calculate The percent Water In CoC2H3O22 x 4H2O?
1. Find the molar mass (MM) of the hydrate (cobalt acetate tetrahydrate).MM Co(C2H3O2)2: 177.02g (anhydrate)+ MM 4H2O: 72.06g (water)MM Co(C2H3O2)2 * 4H2O = 249.08g (hydrate)2. Find the percent water of hydrate. Divide the mass of water by the mass of hydrate (anhydrate + water = hydrate).72.06g249.08g x 100%Percent water of hydrate is 28.93%.Finding Molar Mass# atoms Element A * Atomic Mass Element A = Mass A# atoms Element B * Atomic Mass Element B = Mass B... etc.Add up all of the mass values and you have the molar mass of the substance.
How many moles of water are contained in one mole of this hydrate in alum containing 45 percent water?
The moles number of water 12; the chemical formula is KAl(SO4)2.12H2O.
How do you identify the unknown substance as a percentage hydrate lab?
The formula for percent hydrate is calculated by taking the mass of the water lost and dividing by the mass of the hydrate.1. To calculate the water lost, subtract the value for the mass of the anhydrate (substance after it has been heated and dried [without water]) from the value for the mass of the hydrate (substance before it has been heated [with water]).Mass hydrate - mass anhydrate = water lostOR, another way to put itMass before heating - mass after heating = water lost2. Next, divide the mass of the water lost by the mass of the hydrate.Mass water lost- mass hydrateEx. A student was asked to identify an unknown hydrate by following the procedure described in this module. After heating and cooling, a 2.752g sample of this unknown weighed 1.941g. Students were given a list of possible compounds from which to identify their unknowns:LiNO3 * 3 H2OCa(NO3)2 * 4 H2OSr(NO3)2 * 4 H2OIn order to identify the unknown substance, the percent hydrate for the following compounds listed above needs to be calculated. This is done by first calculating the molar mass of each hydrate, then calculating the percent of water in each hydrate.Before proceeding, the amount of water lost needs to be calculated, followed by calculating the percent water in the unknown hydrate.Water lost: 2.752g hydrate - 1.941g anhydrate = 0.811gPercent water of hydrate: 29.47%0.811g2.751g x 100%1. Identify the molar mass of each hydrate.LiNO3 * 3 H2O (Lithium Nitrate Trihydrate)Molar Mass of LiNO3 (Lithium Nitrate): 68.9459gMolar Mass of 3 H2O (Water): 18.0152 * 3 OR 54.0456gMolar Mass of LiNO3 * 3 H2O = 122.9915g (add values above, not multiply!)Ca(NO3)2 * 4 H2O (Calcium Nitrate Tetrahydrate)Molar Mass of Ca(NO3)2 (Calcium Nitrate): 164.0878gMolar Mass of 4 H2O (Water): 18.0152 * 4 OR 72.0608gMolar Mass of Ca(NO3)2 * 4 H2O = 236.1486gSr(NO3)2 * 4 H2O (Strontium Nitrate Tetrahydrate)Molar Mass of Sr(NO3)2 (Calcium Nitrate): 211.6298gMolar Mass of 4 H2O (Water): 18.0152 * 4 OR 72.0608gMolar Mass of Sr(NO3)2 * 4 H2O = 283.6906g2. Calculate the percent water in each hydrate.Percent Water of Hydrate LiNO3 * 3 H2O (Lithium Nitrate Trihydrate) - 54.0456g122.9915g x 100 = 43.94%Percent Water of Hydrate Ca(NO3)2 * 4 H2O (Calcium Nitrate Tetrahydrate)- 72.0608g236.1486g x 100 = 30.52%Percent Water of Hydrate Sr(NO3)2 * 4 H2O (Strontium Nitrate Tetrahydrate)- 72.0608g283.6906g x 100 = 25.40%Due to the closest comparison in percentage values, the most likely compound is Ca(NO3)2 * 4 H2O (Calcium Nitrate Tetrahydrate). The values aren't exact matches probably because the water was not fully evaporated while being heated (leading calculations to indicate less water than there really was/is in substance). In other words, due to errors made on behalf of the experiment conductor by not completely heating the substance.Calculating Molar Mass of SubstancesElement A: Number Atoms Element A x Atomic Mass Element A = Mass AElement B: Number Atoms Element B x Atomic Mass Element B = Mass Betc.Add all of the mass values found above (Mass A + Mass B ...) and you have the value of molar mass. In the case above, to find the molar mass of the hydrates, simply add the molar mass of water (multiply by however many water molecules are in compound) and the molar mass of the other compound.
What is the percent of water in calcium sulfate?
the % hydrate of calcium sulfate is 20.9%
What is the percent water in the hydrate?
This percentage is different for each chemical compound.
What is the formula of a hydrate that is 85.3 percent barium chloride and 14.7 percent water?
BaCl2 2(H20)
What is important of percent composition of water in the hydrate compounds?
because the compound will scoral
What is important of percent composition of water in the hydrate compound?
because the compound will scoral
What is the important of percent composition of water in the hydrate compounds?
because the compound will scoral
How much is 10 percent of 450 in calculation?
45.
What is the percent of water in the hydrate for sodium sulfate?
This percentage is different for each chemical compound.
Calculate The percent Water In CoC2H3O22 x 4H2O?
1. Find the molar mass (MM) of the hydrate (cobalt acetate tetrahydrate).MM Co(C2H3O2)2: 177.02g (anhydrate)+ MM 4H2O: 72.06g (water)MM Co(C2H3O2)2 * 4H2O = 249.08g (hydrate)2. Find the percent water of hydrate. Divide the mass of water by the mass of hydrate (anhydrate + water = hydrate).72.06g249.08g x 100%Percent water of hydrate is 28.93%.Finding Molar Mass# atoms Element A * Atomic Mass Element A = Mass A# atoms Element B * Atomic Mass Element B = Mass B... etc.Add up all of the mass values and you have the molar mass of the substance.
During the cooling of the fired crucible water condensed on The Crucible wall before its mass measurement Will the reported percent water in the hydrated salt be reported too high or too low?
The percent of water is determined by the loss is mass after heating the water vapor condensed on the crucible wall before heating.
What is the calculation of 30 percent of 40?
40 x 0.30% = 12
What is the formula for calculation mass and mass percent?
gaga si cherywel
