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Mg +2HCl-> MgCl2 + H2what volume of Hydrogen at STP is produced from the reaction of 50.0g and the equivalent of 75 g of HCl? Also, How much of the excess reagent is left over?
As a result of new automated equipment, it is anticipated that fixed costs will increase by $125,000 and variable costs will be 50% of the selling price. The new break-even point in units is:
During an action potential, activation of voltage-gated sodium and potassium channels occurs at different rates. What is the effect of this difference on ion flow across an axon membrane?
Explain how variables such as social interactions, cognitive processes, environmental variables, cultural context, and biological factors shape social psychology and how it is practiced.
Why is an action potential conducted in only one direction, from an axon hillock to an axon terminal?
for the remaining 30% you choose randomly among the 5 answers. What percent of the answers should you expect to get right? learning about conditional probability and independence
If the auditor obtains sufficient competent evidence on the client's accounts receivable balance by alternative procedures because it is impractical to confirm accounts receivable, the auditor's opinion should be unqualified and could be expected ..
Large university health system, 55 of 120 randomly selected physicians were women. Find the critical values to two decimal places if alpha=0.05.
What would happen to a patient's cellular EK+ if a nurse accidentally administered a potassium solution that caused the patient's extracellular potassium ion concentration to rise to 6.01 mM? Assume a body temperature of 37 °C.
A 350 mL air sample collected at 35 degrees C has a pressure of 550. mmHg. What pressure will the air exert if it is allowed to expand to 425 mL at 57 degrees C?
In a graded potential, what is the effect of cytoplasmic resistance and current leak?
The solubility product of Mg(OH)2 is 1.2E-11. What minimum OH- concentration must be attained (for example, by adding NaOH) to decrease the Mg2+ concentration in a solution of Mg(NO3)2 to less than 1.9E-10 M?
You have 500 mL of a 5.0 M solution of nitric acid HNO3 (63.01 g /?mol) dissolved in water. How many grams of nitrogen does the solution contain.
Determine the partial pressure and the total pressure using Dalton's law of partial pressures - Determine the total pressure of the mixture.
When 0.062 moles of ammonium sulfate ((NH4)2SO4) are dissolved in enough water to make 200 milliliters of solution, how many ammonium ions are present.
Radio waves travel at the speed =3.00 108 m/s(speed of light,). if Saturn is 7.9 108 km from Earth then Determine how many minutes does it take for a radio message to reach Earth from Saturn?
A pipette is used to add 46 mL of 0.3 M Pb(NO3)2 to a 273.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8
if a sample of 0.29 moles of Ar occupies 3.8L under certain conditions, what volume will 0.66 moles of Ar occupy under the same conditions.
A sample of 2.376 g ether (The compound known as diethyl ether [(C2H5)2O], commonly referred to as ether, contains carbon, hydrogen, and oxygen) was combusted in an oxygen rich environment to produce 2.887 g of H2O (g) and 5.643 g of CO2 (g).
Determine the amount of energy involved in calories given off when 85 grams of H2O cools from 45 degrees Celsius to 25 degrees Celsius?
Determine the mass in gms for pure Ag sample that loses 2.88kJ if its temperature drops from 143 degree celsius to 28 degree celsius.?
Determine what was the % of excess air used? If The reactant entered at 93 degrees Celsius and
Calculate how many calories of heat are needed to increases the temperature of 550 grams H2O from 12 degree celsius to 18 degree celsius?
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