Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Write down the two balanced equations leading to the formation of boron oxide when the reaction of boron trifluoride with sodium borohydride leads to the formation of sodium tetrafluoroborate and B2
Determine the numbers of mL of 0.127M H2SO4 are required to neutralize 0.180 g of NaOH? If 56.6 mL of BaCl2 solution is required to precipitate all the sulphate ion in a 750 mg sample ofNa2S
If 43.0 mL of 0.220 M HCl solution is required to neutralize a solution of Ca(OH)2 determine the numbers of grams of Ca(OH)2must be in the solution?
When a sample which is having 1.150 g of iron ore is treated with 50mL of HCl the iron dissolves in the acid to form a solution of FeCl3. The FeCl3 solution is diluted to 100mL and the concentration
What is the pH of a solution containing hydrochloric acid which is having 25 mg/L? What happened if the acid was hypochlorous acid (HOCl) instead?
Suppose the cost of the car is $15,000. With continuous compounding, determine number of years it would take to double cost of car at the annual inflation rate of 5%.
What would the OCL concentration in mg/L be at 25°C if a water containing 0.5000mg/L of HOCl has the pH adjusted to 7.0?
What would be the approximate increase in the temperature of water when a slice of pizza has 500 kcal, and if we could burn the pizza and use all the heat to warm a 50-L container of cold w
Total yearly interest on three bonds is $1,880. If total amount invested is $19,000, find amount invested at each rate?
How does the corresponding wave number of the electromagnetic wave change? Suppose you substitute hydrogen with deuterium: thesffective mass for the vibration changes from 1 amu to 2 amu.
The grocer mixes peanuts which cost $2.69 per pound and walnuts which cost $4.29 per pound to make 100 pounds of the mixture which costs $3.49 per pound. How many pounds of every type of nut is put
If you use density heat test, test, copper wire test, ignition test and the acetone test to find out the PVS and PS how you could tell the polmer apart in three ways?
Calculate the molar concentration of Cu2+? The concentration of Copper (II) Sulphate in one brand of soluble plant fertilizer is .07% by weight. If a 24.5 g sample of this is dissolved in 2
Calculate the original concentration of Ag+? An excess KCl is added to 10.00 mL of a solution containing an unknown concentration of Ag+ ions, which results in the formation of 1.7316 g AgCl precip
While another customer purchased the dozen orchids and the half dozen African violets for the total of $51.00. Suppose no sales tax, determine the cost of every kind of flower.
A sample of a mixture containing only potassium chloride and sodium chloride has a mass of 4.000g. When this sample is dissolved in water and excess the silver nitrate is added, a white solid AgCl p
1.6 g of lithium is mixed with 6.95 g of oxygen in a combination reaction. Which product is in excess? Determine the numbers of moles of product are produced?
Assuming the pressure is constant, what temperature is required to reduce the volume to 2.01 L when a sample of sulfur hexafluoride gas occupies a volume of 5.14 Lat 130.3°C.
At sea-level a gas-filled weather the balloon with a volume of 45.0 L is released, where the prevailing conditions are 21.3°C and 758.2torr. The balloon can expand to a maximum volume of 900 L.
Two gases, carbon dioxide (9.5 grams) and krypton (18.4 grams) are confined in a container at a pressure of 710 torr. Determine the partial pressure of krypton in torr.
At 7400 nm the P fund series of the hydrogen spectrum has as its longest wavelength component a line. Explain the electron transitions that form this series. That is, give a Bohr quantum number tha
You take out the 3-year, $7,000 loan at 8% simple annual interest. Lender charges you a $100 fee. Thinking of fee as additional interest, find actual simple annual interest rate you will pay?
Explain how does the alcohol get from the outer chamber to the inner? How can this process be has tended? Calculate the purpose of the different chemical additions to outer chamber?
Determine what type of reactions take place in the inner chamber? Determine the advantage and disadvantage of photometry to calculate the ethanol?
Explain how will your calibration curve compare to that in Kaye's article? Is there a difference? Is there an advantage to plotting one of the ways?