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Suppose a solution is prepared by dissolving 3.50 grams of NH4Cl in sufficient water to make 250 mL of solution. Explain what is the concentration of this solution in units of molarity?
A. 0.0327 M B. 0.0654 M C. 0.131 M D. 0.262 M
The ion-accelerating voltage in a particular quadrupole mass spectrometer is 5.00 V. How long will it take a singly charged cyclohexane ion to travel the 15.0 cm length of the rod
By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little
A graduated cylinder contains 18.0 m/L of water. What is the new water level after 35.6 g of silver metal with a density of 10.5 g/mL,is submerged in the water?
How many grams of cobalt (III) chloride and of hydrogen fluoride are needed to prepare 100.00 grams of cobalt (III) fluoride
How many mL of 0.380 M solution can be prepared by dissolving 4.00g of Ca(OH)2 in water?
You may want to write out the reaction)When ethane (C2H6) reacts with chlorine (Cl2) the product is C2H5Cl and HCl. In a certain experiment 165 g of C2H6 reacts with 255 g of Cl2.
What will be the theoretcal yield of tungsten(s) ,W, if 45.0 g of WO3 combines as completely as possible with 1.50 g of H2? WO3(s) + 3H2(g) => W(s) + 3 H2O(g)
Which anion gives precipitate with Ba+2 ion? Iv) Which anion evolves a gas when acid is added? V) Which anion releases an odorous gas as a product?
Briefly comment on the differences in these two concentrations. calculate the [OH] in a 1.0M NaOH solution and in a buffer containing 1.0 M NH3 and 1.0 M NH4Cl.
Recall from class that we estimated the pi bond in ethylene to be about 350 kJ/mol. Use the same approach to estimate the strenghth
If 358 mL of H2SO4 is neutralized with 60.0 mL of 1.50 M NaOH, what is the initial concentration of the acid?
For 100 g mol of a gas mixture of 75 mol % CH4 and 25% H2, calculate the total heat of combustion of the mixture at 298 K and 101.32 kPa, assuming that combustion is complete.
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