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The density of the solution is 1.21 g/ml and the density of the water is 1.0g/ml. A student taken 10.0 ml of this solution and dilutes it with water to 250 ml (3 SF).
What is the percentage of KHP in this sample? In the titration of an impure sample of KHP, it was found that 6mL of 0.100M NaOH was needed to react totally with 0.765g of sample.
A granite rock of 170 kg (density = 2700 kg/m3) is dropped into the lake. A woman dives and tried to lift the rock. Find out how much force the woman requires to apply to lift it from the bottom of
Calculate the molarity of the NaOH solution if 25.21 mL of NaOH solution us needed to react completely with the 0.550g KHP,
A torque of 1.14 N•m is exerted to a bicycle wheel of radius 27 cm and mass 0.90 kg. Treating the wheel as a hoop, determine its angular acceleration.
First stone is just dropped over edge, where as second stone is thrown horizontally at 45 ft/s. About how far apart will stones be when they land?
Arrange the following atoms in order of increasing ionization energy: oxygen, lithium, strontium, chlorine, tellurium and magnesium. Explain your order.
As a 1.6×10^4 kg jet plane lands on the aircraft carrier, its tail hook snags a cable to slow it down. The cable is joined to a spring having spring constant 6.4×10^4 N/m. When the sprin
Three forces in the plane act on the object. Forces are 7N, 11N, and 15N. Angle between 7N and 11N forces is 105 degrees. If not, determine magnitude and direction of resultant force.
W heel removing an electron in N2 weakens bonding, explain using molecular orbital theory why removing an electron inO2 strengthens bonding.
Suppose that the disk is similar to the “Top Aluminum Disk” explained in the manual except that it is 7.7% more massive, the suspending mass is around 19.96 g and the diameter of the &ld
Which would show an absorption band at a larger wave number: a carbonyl group bonded to an sp2 carbon or a carbonyl group bonded to an sp3 carbon?
Determine the concentration of HOAc remaining after mixing 30.0 mL of 0.100 M HOAc with the 5.00 mL of 0.200 M NaOH.
Determine the dissociation constant of the acid? 50.0 mL of a solution containing the 3.0 m mol of a weak acid are found to have a pH of 5.64.
Someone beneath the table starts to pull the string downward to make the circle smaller. When the string will tolerate a tension of no more than 105 N, determine the radius of the smallest possible
At what pH will this solution contain equalcon centrations of OAc and HOAc? Consider a 0.100 M solution of acetic acid, HOAc (Ka =1.8x10-5).
A mass of 50 kg, primarily at rest, is pushed up an inclined plane through a 400N force acting parallel to the plane. After moving 3.0m up the plane, the mass is moving having a speed of 2 m/s. Dete
In aqueous solution, the hydrogen sulfate ionHSO4-, dissociates according to the Explain how might sodium hydrogen sulfate be used to prepare a buffer solution?
The separation among the slits is 0.53mm, and the first order maximum of the interference pattern is at an angle of 0.055degrees from the center of pattern. Determine the wavelength of the laser lig
Assume points A,B,C, and D are noncollinear, and vector AB + vector CD = 0. Find relationship between vector AB and vector CD?
If the final temperature is 23.5 degree C, what was the unknown volume? (Assume that no heat is lost to the surroundings; d of water = 1.00g/mL) An unknown volume of water at 18.2 degree C.
A double slit is illuminated concurrently with orange light of wavelength 600 nm and light of an unidentified wavelength. The m = 4 bright fringe of the unknown wavelength overlaps the m = 3 bright
Explain how much heat in kJ is formed by the reaction of 3.48 mol of carbon dioxide? Consider the reaction, 2C4H10(g) +13O2(g) ---> 8CO2(g) +10H2O(l), for which ΔH = -5760kJ.
Using Maxwell's relation, calculate whether the entropy of silicone increases, decreases, or stays the same when it is compressed by increasing the P at constant T. Silicone is a biomaterial that e
The human eye can readily sense wavelengths from around 400 nm to 700 nm. When white light illuminates a diffraction grating having 750 lines/mm, over what range of angles does the visible m = 1 spe