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MgNH4PO4.6H2O loses H2O stepwise as it is heated. Anhydrous material (MgNH4PO4) is formed. Find phosphorus percentage of monohydrate and anhydrous material?
What mass of water forms if 6.5 L of C4H10(g), 0.500 g of N2(g), and 0.410 g of Ar is stored at STP. What volume must the container have, assuming no interaction of the three gases?
Describe what is occuring at nanoscale during energy generation? why do ionic compounds conduct electricity well when they are dissolved in water.
A student measures conductivity of a KNO3 solution and determines it to be the strong electrolyte. Write the correct list of species in solution?
How many grams of antacid sodium bicarbonate, NaHCO3, would be essential to bring pH of your stomach to 7.00?
A compound was analyzed and was found to contain following percentages of elements by mass: barium, 89.56%; oxygen, 10.44 percent. Find out empirical formula of the compound.
Compute ratio of escape velocity to root mean square speed of helium, argon, and xenon atoms a 2000k. does result help describe low abundance of helium in the atmosphere?
When cooncentrated CaCl2 (aq) is added to Na2HPO4 (aq), white ppt forms that is 38.7% Ca by mass. Write the net ionic equation to represent probable reaction which occurs.
How many grams of PbCl2 will be formed if excess HCl is added to 30.00 mL of 0.2319M solution of PbNO3 according to reaction.
Find the concentration of NaOH solution if 34.98 mL of it reacted with 1.9278 g of KHP? Solution is prepared that is 23.44 wt% NaCl in water. Find the molality of solution?
1Fe2(CO3)3->1Fe2O3+3CO2 What mass of iron (III) carbonate is required to produce 31.2 grams of iron (III) oxide?
If you use = 8.206×10-2 , which of the given conversions would be essential before you could find number of moles of gas, in sample?
Find out cell reaction, standard cell potential (E0 cell) and half-cell which acts as cathode for voltaic cells composed of following half-cells.
What mass of carbon must be produced if tums were pure calcium carbonate? This is theoretical yeild. Equation: CaCO3+2HCl->H2O+CaCl2+CO2 mass of 24 well plate/pipette with acid.
You decide to take out a $20000 simple interest loan at 4%, on the 07/23/2014. In 45 days you decide to pay off $8000 of the loan. What is your new principal? Explain how you got the answer.
The student body at Eisenhower High School is having an election for Homecoming King. The candidates are Aaron, Brad, Charles and David (A, B, C, D for short). The following table gives the preferen
Explain why is the vertical movement of air critical to the formation of clouds and precipitation? How is this vertical movement achieved? What roles do adiabatic temperature changes play in such pr
Find specific heat of substance if 29.0 kJ are needed to raise temperature of 465 g of substance from 30.0°C to 243.0°C?
The mileage for motorcycle with fuel tank capacity of 22 L is 35 miles per gallon. Density of gasoline is 0.74 g/mL. How long a trip, in kilometers, can be made on full tank of gasoline?
A random sample of 300 individuals working in a large city indicated which are dissatisfied with their working conditions. Based upon this, compute a confidence
Conduct a regression analysis to determine if age (independent variable) has any effect on number of vitamins/supplements people take.
Then balloon is placed in device squeezing balloon. Volume of baloon is now 1.3 L. Find the final pressure of gas in the balloon?
The final project for this course is the creation of research paper. You will choose a specific problem you see in the workplace (or, if you have limited work experience, that you would find it valu
If sample of (NH4)2HPO4 is found to contain 2.85 · 10-3 g of P atoms how many (NH4)2HPO4 formula units are present? Write answer in scientific notation.
ABC company is increasing its equity by selling additional shares to public and also by converting its retained earnings. The total amount to be raised is $1,000. Given that size of retained earnings