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1 mol of sand grains would cover the state of Texas to several feet. Approximate to how many feet assuming the sand grains are roughly cube shaped each one with an edge length of .10 mm. Texas has a land area of 268,601 square miles.
A multiple series dilution was performed. The sample was diluted 1/5, 1/2, 1/4, 1/2. What is the final dilution
the density of aluminum is 2.7 g/cm cubed, if the volume of this object is 12ml, what is the mass of the grams?
a disgruntled postal worker dumps a liquid culture of anthrax into a river nine hundred meters upstream of the intake
When an ionic solid is added into a solvent, you can see that the ionic solid dissociates into its respective cations and anions. The solvent molecules immediately cluster around the ions.
In a combustion analysis, 2.00 mg of vitamin C yielded 3.00 mg CO2 and 0.816 mg H2O. From mass spectrometry, it was found that the molecular weight of vitamin C is 176 amu. Find out the mass composition of vitamin C its empirical formula and its m..
Arrange these aqueous solutions, each 10% by mass in solute, in order of increasing freezing point and boiling point. Explain your reasoning.
have a buffer solution composed of 4.00 mol of acid and 1.75 mol of the conjugate base. If the pKa of the acid is 2.20, what is the pH of the buffer?
a quantity of 2.0 102 ml of 0.862 m hcl is mixed with 2.00 102 ml of 0.431 m baoh2. how many moles of water are
How many total moles of ions are released when 0.665 mol of Rb2SO4 dissolves completely in water
the sandals in disintegrations per minute per gram? Assume the original activity was 15.3 disintegrations per minute per gram.
The masses of the unknown and the solvent (water) were determinded, and the unknown completely dissolved in the water. Just before the jacketed test tube containing the unknown solution was placed in the ice-salt water bath
For MgO, which has the NaCl structure, the unit cell edge is 4.21 Angstroms. Use the approach of Pauling to evaluate the radii of Mg^2+ and O^2-
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