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Determine What is the percent by mass of sodium phosphate in a 0.142M Na3PO4(aq) solution? If it is given that it has a density =1.015g/mol.
Determine concentration of oxygen gas in H2O at the temperature of 25 degrees Celsius exposed to a partial pressure of oxygen =325mmHg? It is given that the Henry's law constant for oxygen gas =1.3 x 10^-3 mol/ L x atm at at 25 degrees Celsius .
Initially A sample of a substance of 23.43 g weight has temperature 24.2 °C then it absorbs heat and reached to temperature 122.0 degree Celsius; calculate the specific heat of this substance if it absorbs 2167 joule heat
As of 2007 world record for swimming 1500.0 m in a long course pool is 14 min 34.56 s. if we follow this rate then calculate how many seconds would be taken by a man to swim 0.850 miles?
The reported values for one compound (CaHbOc) were as follows: mass: 214.1360 g/mol; percent C and H: 84.07 and 8.47, respectively. Determine the molecular formula of the compound.
Prepare the molecular formula for given compounds and determine the amount of molecules present and write the molecular formula and determine how many grams of each you have
A rectangular beam made using concrete with f'c = 6000 psi and steel with fy=60000 psi has a width b= 20 in. The concrete modulus of rupture fr=530 psi. The elastic moduli of the concrete and steel are, respectively,
Calculate the rate constant for the reaction when the reactant concentration in a first-order reaction is given 7.30×10-2M after 15.0s and it is also reported 4.40×10-3M after 65.0s . ?
Complexometric titration and stoichiometry - How many grams of chloride ion were present in sample
Specific rotation of α and β -D-glucose - Determine the percentage of each anomer at equilibrium.
CHEM 354 Extended Problems, The variation of EMF for the cell below with temperature is shown in the graph below.
Find the value of Pressure - How much more pressure will the gas exert if the temperature is raised to 44.1°C?
For the given reaction, 2 HCl (aq) + Ba(OH)2 (aq) BaCl2 (aq) + 2 H2O (l) 73.0 grams of HCl are allowed to react with 342 grams of BaCl2.
What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?
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