Calculate the molar mass: The number of formula units found in a 12.91 g sample of...
Calculate the formula mass and molar mass of NH3. Formula mass a mu Molar mass= g/mol
use the information given to calculate the formula for
mass/molar mass of the anhydrous salt of your unknown sample(show
calculations)
B. Determine the Formula of an Unknown Hydrate Unknown sample number: 20 Nickel II Molecular formula of the unknown: 1. Mass of crucible + unknown hydrate Nisou "X"H60 (sulfate) 37.40g 36-3lg 1:09g 2. Mass of crucible 3. Mass of unknown hydrate( 1 - 2) 4. Mass of crucible + anhydrous salt a. after first heating b. after second heating 31.3919...
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Write the chemical formula for the complex salt using x, y and z the formula must include the 3h_2O. show the calculation of the molar mass or the complex salt. (the molar mass must include the 3h_2o.) Show molar mass calculation for fe(nh_4)_2(so_4) (Remember to include the mass of the 6H_2O molecules.) Show the calculation of the theoretical yield of the complex salt. using the measured mass of the iron salt you stand...
A sample of a substance with the empirical formula XC1_2 weighs 0.5785 g. When it is dissolved in water and all its chlorine is converted to insoluble AgCl by addition of an excess of silver nitrate, the mass of the resulting AgCl is found to be 1.2794 g. The chemical reaction is XCI_2 + 2 AgNO_3 rightarrow 2 AgCI + X(NO_3)_2 Calculate the formula mass of XCI_2. Formula mass XCI_2 = g mol^-1 Calculate the atomic mass of X. Atomic...
Calculate the amount (mass) of acetaldehyde (C2H40, molar mass - 44.0526 g moll) that causes a bomb calorimeter with a heat capacity of 12.91 kJ °C to have a temperature increase from 27.8 °C to 41.7°C. The AU for the combustion of acetaldehyde is -1166.9 kJ mol? 7.30 g 6.778 5.55g 8.67 g 4.29 g
A compound was found to have an empirical formula of CH_2 O, and a molar mass at approximately 180 g/mol. What is the molecular formula?
A 0.5998 sample of a new compound with a molar mass of 93.12 g/mol was analyzed and found to have 0.2322g of carbon,some hydrogen,and 0.3091g of oxygen. What is the formula for the compund?
Q. Calculate the amount injected in fmol units (you injected 2µL of sample) 1000fmol=1pmol Molar mass is 498.6 g/mol Concentration is 25n/ml or 25pg/µL PS. If there is something missing you need for calculation PLEASE ADVISE WHAT IN COMMENTS
Molecular formula
Molecular formula From the formula mass of the empirical formula on the previous page, and the molar mass of the hydrocarbon above, calculate the molecular formula of your hydrocarbon. What is the molecular formula of your hydrocarbon? Show calculation. PBL Report Members Empirical formula 42 477 From the data in page 1 calculate g of co, and g H,O Show calculations and include units ns0a634g 79 Mass of H2O 69.577-68.912 Convert the g of CO2 and g H20,...
1) Calculate the number of moles of Cl atoms in 3.01×1024 formula units of magnesium chloride, MgCl2. Express your answer numerically in moles. 2) In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chlorine present in 100 g of chlorine gas. Express the quantity in moles to three significant figures. 3) Sodium hydroxide, NaOH, is a strong base that is used in industrial synthesis and processes such as...