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Question:
1. Difference in the molecular weight of Sodium Fluoride (NaF) compared to similar compounds-How does this difference affect properties (e.g., solubility) to change the range of uses?
2. Difference in the reactivity of Sodium Fluoride with the reactivity of a similar compound-Does more or less reactivity change the way in which it is used?
3. Difference in the reactivity of Sodium Fluoride with the reactivity of a similar compound-Does more or less reactivity change the way in which it is used?
Correct the refractive index and boiling point to 20 degrees Celsius and 1 atmosphere and calculate the density of the unknown?
Ethyl chloride vapor decomposes by the first-order reaction C2H5Cl --> C2H4 + HCl The activation energy is 249 kJ/mol and the frequency factor is 1.6 X 10^14 s^-1 The rate constant at 730 K is 2.4 x 10^-4 s^-1. 1)
calculate the pressure in pascals and atmospheres exerted by a mass of 1.0 kg pressing through the point of a pin of
c3h8g5o2g gt 3co2g4h2g og in the combustion of 250g of propane with an excess of hydrogen what volume of carbon
If you weigh .25g of an antacid tablet that weighs 1.42g, what percentage of the tablet have you used? If the tablet contains 250 mg of CaCO3, what mass of CaCO3 do you have in your measured portion
How many grams of iron are formed when 275 grams of carbon monoxide react with excess Fe2O3
a student wants to react mgs with 100ml of 1.5 m hcl but theintent is to have all the mgs react while leaving 50 of the
How many total moles of ions are released when the following sample dissolves completely in water? 0.382 mol K2HPO4 (Assume that the hydrogen phosphate ion remains intact in solution.)
Problem- Draw the Lewis structures for calcium carbonate and magnesium hydroxide. Put charges on the individual atoms according to their formal charges. Ignore resonance. Include all nonbonding electrons.
If 25 mL of 0.1 M HNO3 is added to a 0.01 L buffer solution that is 0.26 M HCNO and 0.13 NaCNO, what is the pH of the final solution? Ka for HCNO = 3.5x10^-4
Hook one end of the copper wire onto the bottom of the sample cup and the other end hook it on the outside of the cup. Fill half of the Sample cup with distilled water and stir copper (II) sulfate crystals until it dissolved.
The right arm is open to the atmosphere (Patm=783.0 Torr) and the height of the mercury in that arm is 40.00 cm. What is the pressure of the sample of gas
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