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A homogeneous powder, derived from a sample of Ayre's Rock in Australia, is known to contain 33.31% Fe. The titration method used in your lab for Fe determinations is known to have a standard deviation of 0.27% Fe. Assuming you incur NO determinate errors, a single titration of such a sample would be expected, with 95.5% certainty, to fall in the range of X% to Y%, where X is less than Y. What is the numerical value of X?
how many grams of NACL would you need to add to 1 liter water sample ph=7 so that ionic strength equaled to 0.1M
32.5 kJ/mol°GD Muscles are powered by the hydrolysis of Adenosine tri phosphate determine Keq for this reaction
How many grams of each reactant remains after the reaction is complete and how many grams of each product is produced
Would a solution that has a molarity of 0.990 M KNO3 and a density of 0.988 g/mL be considered unsaturated, saturated, or supersaturated?
What is the ion, charge on the ion and hybrid orbitals used by Sn
The volume of a sample of ethane, C2H6, is 2.66 L at 447 torr and 30 °C. What volume will it occupy at standard temperature and pressure (STP)
If 0.00936 mol neon gas at a particular temperature and pressure occupies a volume of 210. mL, what volume would 0.00793 mol neon occupy under the same conditions? What mass of neon gas is required to fill a 4.44-L container to a pressure of 1.30 a..
If the titration required 23.95 mL of 0.2556 M HCl to reach the endpoint, calculate the equilibrium molar concentration of B4O5(OH)4 2- in the saturated solution.
The probability of filling a 3p orbital relative to the 3s orbital is 3/1. Assuming that the total Mg+ population in a given atomization source is 3.5 x 10^18 ions at any given time, what would be the number of ions that are in the excited 3p stat..
Concentrated hydrochloric acid is 12 M and has a density of 1.18 g/mL. Calculate the mass in grams of a 0.025 L sample of concentrated hydrochloric acid.
Given that a sample of air is made up of nitrogen, oxygen and argon in the mole fractions 78% N2, 21% O2 and 1.0% Ar, what is the density of air at sandard temperature and pressure?
What is the molarity of a HCl solution if the reaction of 200mL of the solution with excess CaCO3 produces 10.5L of Co2 gas at 725mmHg and 18C?
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