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Explain how many Calories are needed to increase the temperature of 10.0 grams of ice from 29.6 C to -19.6? Specific heat of ice is 0.48 cal/g C
What is another reagent other than phosphoric acid that can be used to determine the concentration of calcium ion by a conductometric method. What is the important criterion. (Check solubility rules)
Calculate the de Broglie wavelength associated with a muon traveling at a velocity of 3.45 104 cm/s.
finds the antilog ratio of acid and base and determines that for every 1ml of acid she needs 2.29 ml of acid. what is the final concentration in molarity of the sodium acetate and the acetic acid?
How many kilojoules of heat are absorbed when 7.20g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?
Based off of pka values of 10 for phenol and 6.4 for carbonic acid, would sodium bicarbonate be a suitable base for separating phenol from a neutral organic compound via aqueous extraction?
consider the reaction 4nh37o2--gt 4no26h2o. at a certain instant the initial rate of the disappearance of oxygen gas is
Enter the sign of H° and S° for the condensation for CO2. Enter the sign as either + or -. Also indicate the temperature conditions (high temperature or low temperature) that favor condensation of CO2
a catalyst decreases the activation energy of a particular exothermic reaction by 38 kjmol to 56 kjmol. assuming that
Consider the two diagrams showing the energies (boxes) of each of four A particles and four B particles shown below. The dotted lines represent the allowed energies of each particle.
The molarity of Ca2+ in a saturated solution of CaCO3 was determined to be 0.0000616 M. Calculate the solubility product constant (Ksp) for CaCO3. CaCO3 (s) Ca2+ (aq) + CO32- (aq) Molar Mass (g/mol) CaCO3 100.09
Suppose you measured the product of PV of 1 mol of a dilute gas and found that PV= 27.54 L atm at 0.00 C and 37.32 L atm at 100 C.
Ocean water typically contains 35 moles of salt ions dissolved in each 1000 moles of water. Assuming that ocean water has the same density as pure water convert this ratio into a molarity and calculate the expected osmotic pressure of ocean water.
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