Tutorials Posted by nearlyalex
nearlyalex from Oxford
nearlyalex's Posted Tutorials
| Bounty | Category | Question | Tutorial | Purchases | Date Posted |
|---|---|---|---|---|---|
| $1.00 | Chemistry | emoirical formula | step by step with correct answer
...by the relative atomic mass of each element) 6.891 : 17.3 (divide through by 6.891 to give a ratio of elements) 1 : 2.5 ...... | Sep 07, 2009 at 2:34:20PM | |
| $0.50 | Physics | ___________ | step by step with correct answer
...e equations of motion, specifically in this example: s = ut + (at 2)/2 where: s = distance tra... | Aug 10, 2009 at 5:12:31PM | |
| $0.50 | Mathematics | MATH HELP NEEDED | step by step with correct answer
...5 = 4.75 hrs 90 mins = 1.5 hrs 45 mins ... | Aug 04, 2009 at 3:28:27PM | |
| $1.00 | Chemistry | math question | step by step with correct answer
...termined from the half-life l = (ln 2)/[T(1/2)] so for us will be in units of 1/years. l = (ln 2)/75 now the questions asks for the time to rea... | Aug. 04, 2009 at 10:08:49AM | |
| $0.50 | Mathematics | Bill's investment in stock grew 12% to 5 | step by step with correct answer
...112% of Bill's original investment. so if 1.12... | Jul 22, 2009 at 2:09:36PM | |
| $0.50 | Mathematics | Bill's investment in stock grew 12% to 5 | step by step with correct answer
...f 1.12 = 560 then divide both sides by 1.12 1.1... | Jul 22, 2009 at 2:08:46PM | |
| $0.30 | Chemistry | Organic Chemistry Confusion | answer and explanation
...ethyl refers to the methyl being attached to carbon number 4, again we assign carbon number 1 where the ethanol and the cyclohexyl are bonded, then we just number round. i have also attached...... | Jul 21, 2009 at 6:00:11PM | |
| $1.00 | Physics | Voltage | answers and explanations
...age law says that the voltage charges around any closed loop must sum to zero. So we know the drop over a resistor is given by V = IR from ohm’s law So V1 = I R1 = (0.17*10^-3)*3.3*10^3 = 0.55 V V2 =...... | Jul 19, 2009 at 7:00:14PM | |
| $3.00 | Mathematics | Need help with Algebra questions | step by step calculation with correct answers
... = -16 t^2 + 64t and the velocity (v, in feet per second) of water in the fountain is described by v = -32t + 64. Find the time when the water\'s velocity is 16 feet per second, and then find the...... | Jul 19, 2009 at 4:20:20PM | |
| $1.00 | Mathematics | medical math | step by step with correct answer
...ing mass percentage. so that 0.9% = 18g so dividing both sides by 0.9 we ge... | Jul 19, 2009 at 4:06:07PM | |
| $0.50 | Chemistry | Knowing that barium hydroxide (Ba(OH)2) | step by step with correct answer
...tration of Ba(OH)2 ions. we know from the autoprotolysis constant (sometimes called the ionic product) of water: Kw = [H... | Jul 19, 2009 at 3:22:55PM | |
| $1.00 | Physics | physical science | step by step with correct answer
...hich is the melting point of water. so if is requries 334.4 kJ for one kg of ice to be melted ... | Jul. 18, 2009 at 08:46:54AM | |
| $1.00 | Chemistry | Generic Chemistry questions i can't seem to choose a definite answer for | answer and explanations
...tion state. A) (BrO3)- so the 3 oxygen contribute -6 so to make an overall charge of -1 the bromine is in an oxidation state of +5. +5 + 3*(-2) = -1 B) (BrO4)- we now have 4 oxygen contributing -8 in...... | Jul 17, 2009 at 9:27:23PM | |
| $1.00 | Mathematics | Need help with this word problem | step by step with correct answer
...vestment." we can say that the profit on the sale of the N-30 melons covers the cost of the last 30 melons so (N-30)*1.5 = 30C (N-30) = 20C from (eqn 1) C = 300/N so substitute this is and we ... | Jul. 17, 2009 at 07:38:41AM | |
| $2.00 | Mathematics | Standard Deck of Cards Probability - 2 Questions | complete answers step by step
...g per suit) so probability = (12/52)*(2/51) + (2/52)*(12/51) = 2*((12... | Jul 15, 2009 at 8:13:02PM | |
| $3.00 | Chemistry | Chemistry | answer and explanations
... nuclei. 33, B: Could nonpolar nitrogen molecules and polar water molecules form bonds with one another? If so, what kind? They can form induced dipole-induced dipole bonds as above but they c... | Jul 15, 2009 at 7:55:37PM | |
| $3.00 | Chemistry | Chemistry | answer and explanations
...has a greater drop in temperature. The internal energy of the cheese is greater than that of the internal energy of the crust, as the temperature is related to the kinetic energy, but in cheese this...... | Jul 15, 2009 at 7:54:56PM | |
| $6.00 | Chemistry | Chemistry | answer and explanations
...*27 + 3*16 = 102 g/mol So no. of moles of Al2O3 = 408/102 = 4.00 mol 28, A: Antonia wants to produce a reaction between methane and oxygen. At first she has no luck, so she decides to add more of...... | Jul 15, 2009 at 7:53:00PM | |
| $6.00 | Chemistry | Chemistry | answer and explanations
...r of particles in thermal equilibrium with each other as energy can be transferred via collisions in Brownian motion, so they are in thermal contact. If we assume the room is isolated from the rest...... | Jul 15, 2009 at 7:51:58PM | |
| $5.00 | Chemistry | Chemistry | answer and explanations
...Neutralization is a process which reacts an acid and a base to form salt and water. B is a neutralization reactions as we have an acid in HClO and a base in NaOH and we produce a salt NaClO and wate... | Jul 15, 2009 at 7:50:41PM | |
| $5.00 | Chemistry | Chemistry | answer and explanations
...nt of the conjugate base A-, so when acid is added via rain it will react with the extra conjugate base and will be neutralized. We would expect as we add acid that the concentration of H+ increases,...... | Jul 15, 2009 at 7:49:54PM | |
| $15.00 | Chemistry | MOLAR MASS OF A GAS lab HELP? MOLAR MASS | step by step explanations with correct answers.
...molar mass of butane gas, what is its chemical formula? From the experimental data we would expect the chemical formula to be 72.15 g/mol as this is closest to the experimental value of 76.34 g/mol....... | Jul 15, 2009 at 7:36:35PM | |
| $0.45 | Chemistry | Triglyceride | answer as well as attached skeletal formula
...3(CH2)12 COOH H2C-OC(O)(CH2)14 CH3 palmitic | HC-OC(O)(... | Jul 15, 2009 at 6:34:44PM | |
| $0.50 | Physics | energy | complete answer
... of an electron = -1.602*10^-19 C charge of a proton ... | Jul 15, 2009 at 6:17:30PM | |
| $0.50 | Physics | Electrons | complete answer
...^-19 C so number of electron... | Jul 15, 2009 at 5:56:28PM | |
| $0.50 | Physics | Transported electrons | complete answer
...on has a charge of -1.602*(10^-19) C (elementary charge)... | Jul 15, 2009 at 5:52:54PM | |
| $0.40 | Physics | Doppler effect | complete answer step by step
...ceding is given by f\' = {v/(v+u)}p we know f = 1.182*f\' frequency of approach is 1.182 greater than receding.... | Jul 14, 2009 at 7:17:51PM | |
| $0.55 | Physics | Fission Power Plant | complete answer step by step
...he conversion form electron volts to joules is the elementary charge = 1.602*10^-19 C. so number of U atoms = input / energy from one U atom =... | Jul 14, 2009 at 6:59:15PM | |
| $0.50 | Mathematics | I need help in algebra with linear equat | graph attached
...-5, you can always t... | Jul 10, 2009 at 4:41:00PM | |
| $0.25 | Mathematics | List Price 7 | correct answer
....95)*X 0.85 corresponds to the 15%, 0.90 corresponds ... | Jul 10, 2009 at 3:10:03PM | |
| $1.00 | Chemistry | On another planet, a compound is made of | complete answer step by step
... + (7*51.716u) + (4*63.023u) = 659.792u pe... | Jul 07, 2009 at 6:51:16PM | |
| $0.50 | Mathematics | fractions | answer
...through by 8 then 5... | Jul 07, 2009 at 4:22:19PM | |
| $20.00 | Chemistry | Chemistry | i have given responses to all questions and hope it helps!
... temperature where as the crust has a greater drop in temperature. The internal energy of the cheese is greater than that of the internal energy of the crust, as the temperature is related to the...... | Jul 07, 2009 at 1:48:51PM | |
| $1.00 | Mathematics | Please show the work | step by step with correct answer
... of quarters = q so d+q=65 (eqn 1) and d/10 + q/4 = 11.60 (eqn 2)... | Jul. 07, 2009 at 10:55:34AM | |
| $1.00 | Physics | Use Algebra to calculate the raise of temperature | step by step with correct answer
...nt to determine the substance. so Q = mcT (let... | Jul 06, 2009 at 7:32:58PM | |
| $1.00 | Mathematics | Please show the work | step by step with correct answer
...qn 3) (eqn 2) divided by (eqn 3) 1= 10c/6r 6r=10c (rearrange) r=5c/3 (divide through by 6) substitute in... | Jul 06, 2009 at 7:27:37PM | |
| $1.00 | Mathematics | Please show the work | step by step with correct answer
...da's speed = v and mary's speed is therefore = v+8 speed = distance / time so for mary v+8=m/... | Jul 06, 2009 at 7:19:11PM | |
| $1.00 | Mathematics | Please show the work | Please show the work
... speed = distance / time so for steve: 4v=s/3 (eqn 2) and for fred: v=f/3 (eqn 3) divide (eqn 2) ... | Jul 06, 2009 at 7:08:05PM | |
| $1.00 | Mathematics | a number is four times another number. s | a number is four times another number.
...= 212 so y = 53/2 = 26.5 so... | Jul 06, 2009 at 6:06:14PM |