Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Suppose your computer does not start one morning and you know that by using the scientific method you might not only calculate the cause of the problem but by acting on your hypotheses you might get
Which particle will move un-deflected through the field if the Alpha particles having speed 1000m/s to2000m/s enters into a velocity selector where the electric intensity is 300 V/m and the magneti
Determine pH of this solution at the 25C when a solution is made up dissolving the 45.0g of "soda ash" (99.0% pure Na2CO3, by weight)) and 20.0g of 100% pure K2CO3 in 5.0Liters of aqueous solution
What do these observations tell us about the nature of the DDT molecules? The pesticide DDT concentrates in the fat of animals and tends to remain in the soil despite heavy rain that washes away oth
How about if the temperature was 60 degrees Celsius? At 10 degrees Celsius, which is more concentrated, a saturated solution of potassium nitrate or a saturated solution of potassium chlorid
Is it correct to say that the only ions an acidic solution contains are H+ ions and that the only ions a basic solution contains are OH- ions? If not what would the correct descriptions of s
Determine the final temperature of the water when the specific heat of water is 4.184 J/(g*°C) if 35.3 kJ of energy is absorbed by 500.0 g of water at 10.0°C.
Determine the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-). The pH of a bicarbonate-carbonic acid buffer is 7.70.
The loci coding for these traits are linked, In fruit flies, blackbody (b) is recessive to gray body (b+), purple eyes (pr) is recessive to red eyes (pr+), and vestigial wings (vg) are recessi
The female progeny are then crossed with males that have black bodies, purple eyes, and vestigial wings. The interference among these genes is 0.2.
Explain what salt is produced when a solution of calcium hydroxide is neutralized by the phosphoric acid, H3PO4? Can you please give equation to the process also?
What pH would be needed to achieve maximum separation of these ions by precipitation of CaC2O4 if the solution also contains the oxalic acid H2C2O4 at a concentration of .10M?
Determine the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-) when the pH of a bicarbonate-carbonic acid buffer is 7.70.
How can determine the total energy of that pulse if the laser emits a burst or pulse of energy containing 5.0 x 1017 photons of this radiation?
A kinetics study was done to determine the rate law for reaction (1) by carries out trials where aqueous solutions supplying A, E and L were combined, and the time in seconds required for the disapp
2.50 M NaOH is titrated with 65.0mL of 1.75M HBr. The HBr is in a beaker and the NaOH is added from the burette in an acid-base titration. Determine the solution in the beaker after: a.) 15.0mL of
What pH must be exceeded before Cu (OH)2 begins to precipitate? The Ksp for Cu(OH)2 is 1.6X10^-19. A student transfers 175.0mL of 0.065 M Cu(NO3)2 to a beaker and then adds aqueous NaOH solution dr
Determine the numbers of grams of Mg(OH)2 can be dissolved in the 800mL of an aqueous buffer of pH= 8.5. The Ksp of Mg (OH)2 = 5.6 X10^-12
The student heated a sample of the blue solution. After a short time, the solution changed from blue to green. Is the forward reaction endothermic or exothermic? Briefly explain.
When 100.0 mL of the HCI solution had been added to5.00.0 mL of 0.300 M NH3 (aq), she measured the pH of the mixture and found it was 9.54 A student does a large scale titration of NH3 (aq) (pKb =
Determine the pH of a 0.100 molar solution of Na2CO3, which sodium salt of the one of the conjugate bases of this acid, Carbonic acid H2CO3 is a dipodic acid with ionization constant: Ka1 = 4.5 x10
If the product was obtained in 64% yield, determine the numbers of grams were obtained? In a certain experiment, 4.6 g Al(s) was reacted with excess oxygen.
Hydrazine is burned in the excess fluorine gas, producing the NF3. The balanced net ionic equation is:
By using the equilibrium concentrations, determine the Keq for the formation of FeSCN2+ How to compare it to Keq literature value, and determine for their % difference?
Why doesn't carbon produce a bimolecular gas, nitrogen (three pair of shared electrons) and as hydrogen (one pair of shared electrons), oxygen (two pairs of shared electrons)? Carbon atoms can shar