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The following equation is not balanced: Na3PO4+MgCl2→Mg3(PO4)2+NaCl Notice that "PO4" appears in two different places in this chemical equation. PO 3-4 is a polyatomic ion called phosphate . What number should be placed in front of Na3PO4 to give the same total number of phosphate ions on each side of the equation? ?Na3PO4+MgCl2→Mg3(PO4)2+NaCl Express your answer numerically as an integer.
Compute the concentration of a solution prepared by adding up enough water to 2.3 g of sucrose (C12H22O11) to make a total of 80 mL of solution.
A 578 mL sample of hydrogen gas was collected over water at 25°C and a pressure of 783 torr. If the pressure of water vapor is 24.0 torr at 25.0°C, what mass of hydrogen gas (g) was collected?
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layer mixture of tert-butyl methyl ether and water
One mole of an ideal monoatomic gas initially at 300 K is expanded from an initial pressure of 10 atm to a final pressure of 1 atm. The molar heat capacity for constant volume for the gas is 32VCR=. Calculate dU, dH, q, w, and the final temperatur..
What happens to the pH when the buffer contains more of the weak acid than the conjugate base. More of the conjugate base than the weak acid
In a 4.09 liter container at 25C are placed 1.23 moles of O2 gas and 3.20 moles of solid C(graphite). If the carbon and oxygen react completely to form CO(g) what will be the final pressure in the container at 25C
400 M formic acid (HCOOH) solution freezes at -0.758 degrees C. Calculate the Ka of the acid at that temperature. (hint: assume that molarity is equal to molality. Carry out your calculations to three sig figs and round off to two for Ka).
Determine how many grams of oxygen gas would be needed to combine exactly with 13.2 kg of propane (C3H8) gas (the 3 and the 8 are subscripts).
an element has 3 stable isotopes with natural abundances of 11 17 and 72. the masses of those isotopes are 19.9 21.9
A zero-order reaction has a constant rate of 3.40×10?4 M/s . If after 30.0 seconds the concentration has dropped to 8.00×10?2 M , what was the initial concentration
The compound has a molecular mass of 70. D) The compound contains a cyano or alkyne group. E) The compound contains a CO group
find the electronic configuration for ionization energies of magnesium the orbital number in which the electrons are
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