Wednesday
July 27, 2016

Posts by dan

Total # Posts: 1,120

Math
5= 6y; y
July 25, 2016

Math
X= 2; 7x^3 + 4
July 25, 2016

accounting
A term investment of 85000, is madr for 10 years at 4.25% interest. Find the value of the investment at maturity if interest is compoundes quarterly?
June 16, 2016

Frederick
A wire of length 50cm is cut into two parts and each part is bent to form a square. If the total area of the two square is 100cm², find the perimeter of each square.
June 15, 2016

Chemistry
When 28.2706 grams of solute are used to make a 932 mL solution of potassium hydroxide, what is the concentration of the solution?
May 16, 2016

Chemistry
How many grams of solute are required to make a 789 mL solution of calcium acetate with a concentration of 0.0049 M?
May 16, 2016

Maths
There is a lampost of twenty meters in height casting light on a tree 10 metres. How long is the shadow of the tree?
May 13, 2016

Physics
During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 34.0 J. How fast was the ball booted by the player on the field?
May 3, 2016

Physics
A bead of mass m = 41.5 kg is released from point A which is located 5 m above the ground and slides on the frictionless track as shown in the figure. Determine the beads speed when it reaches point C which is located 2.0 m above the ground
May 3, 2016

Physics
A 3.1 kg pendulum bob hangs from a 2 meter string. It is pulled to the side, position A, so that the bob is 98 cm (h on the sketch) above the lowest position, position C. The bob is released and begins to swing. What is its potential energy after it has swung to position B, 34...
May 3, 2016

Physics
A point mass m = 115 g hangs from a string of length l = 1.07 m. Calculate the value of v, the initial speed m should be given at the bottom, so that the string reaches a maximum angle of = 31.4°?
May 3, 2016

Physics
During a free kick at a soccer playoff game a 0.5 kg ball at the peak of the kick 14.7 m above the field had a kinetic energy of 34.0 J. How fast was the ball booted by the player on the field?
May 3, 2016

Math
Which equation represents the relationship in the table below? K . M -----------.------------ 1 . 5 2 . 10 3 . 15 4 . 20 5 . 25 A) m=5k B) k=5m C) m= 5 + k D) k= 5 + m
April 25, 2016

maths
solve the equation log(y)/log(2) + log(y)/log(4) = 6
April 10, 2016

english
Okay thank you :) sorry I meant friend.
March 31, 2016

english
so for #1 , can freidn be a direct object?
March 31, 2016

english
Thanks Ms.Sue, So I don't have any of the direct objects correct? and how can I find the direct object pronoun?
March 31, 2016

english
I have to find out the direct object pronoun and then replace the direct object with a direct pronoun. Please check my answers. 1.My friend sells his new car. (car is the direct object, and I replace car with im not sure. 2. My parents watch the news . ( news is the direct ...
March 31, 2016

English
I need an example of a simile for 'relieved'.
March 28, 2016

Calculus
Let f(x) be defined by f(x) = x/(x - 4). What is the image of f?
March 27, 2016

Calculus
i don't understand what you did
March 27, 2016

Calculus
The function f(x) = x^3 + x an inverse. Compute f^-1(0) and f^-1(2). Hint: Do not try to evaluate f^-1 explicitly.
March 27, 2016

business math
Camille Keegan sells lamps for $105.55 that cost her $75.00. Camille's percent of markup based on the selling price is:
March 22, 2016

linear alg
(a) Find T((ax^2 + bx + c) + (px^2 + qx + r)). (b) Find T(k(ax^2 + bx + c)). (c) Find the image of 3x^2 − 2x + 1. (d) Determine another element of P2 that has the same image.
March 21, 2016

Chemistry
Aqueous sodium sulfide reacts with aqueous calcium chloride to make a solid. The % yield is 85%. Calculate the amount of each reactant needed to actually make 3.0g of the solid.
March 20, 2016

Chemistry
We did a titration of calcium hydroxide lab in chemistry, once with and once with edta, we have to calculate the solubility for both, and the ksp, for the hcl I did (concentration)*(Volume of hcl used) then that answer divided by two divided by the amount of divided by the ...
March 14, 2016

Physics
Someone please help. A radio needs to be tuned to a range of values between 526.5 - 1606.5 kHz. Choose a combination of inductor and variable capacitor values within a tuned circuit that would meet this requirement. Choose practical components from standard vendor web sites (e...
March 10, 2016

math
Construct a 2 × 2 matrix that defines a shear of factor 4 in the y-direction, followed by a scaling of factor 5 in the x-direction, followed by a reflection about the y-axis.
March 6, 2016

Math
Find a single matrix that defines a rotation of the plane through an angle of π/6 about the origin, while at the same time moves points to five times their original distance from the origin.
March 6, 2016

Linear Algebra
Yeah I understand that part, but what about projection onto vector u?
March 6, 2016

Math
Did you manage to figure out this assignment? I have the same portfolio assignment and it is super confusing!
March 2, 2016

Writing
Where is somewhere I can get a definition from that I can cite as a scholarly source? My prof said that we can't use an online dictionary.I need to find the definition of universal health care if that matters
February 29, 2016

Chemistry
I did a lab, an kinetics lab (iodide clock) and in my lab report I have to calculate the initial rate in mol L-1 s-1 and I'm not sure how to do that. I have the [I-] and [S2O82-] in mol L-1 already. The reagents are [KI] [NaCl] [Na2S2O3] [Na2SO4] [K2S2O8].
February 28, 2016

U.S History
Are advertisements valuable primary sources/reflections of culture? Why or why not?
February 26, 2016

Chemistry
27% of heat produced by the stove's gas burner is transferred to the soup in the covered pot, the rest is lost. Determine the total mass in grams of methane that must be burned to heat 800 ml of water from 22 to 90 degrees C. The density is 1.08 g/ml and the specific heat ...
February 26, 2016

Chemistry
I have to write the rate law for two elementary reaction equations A ) 2a+b>c+d B ) X+Y>Z I'm pretty sure it's just k[ A ][ B ] and k[ X ][ Y ] but does the coefficient affect it in this case? is it [ A ]^2 ?
February 24, 2016

Chemistry
PART 1 >>Trial 1 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 10 ml S2O8^2-, 1 ml starch time to react = 10 seconds >>Trial 2 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 5 ml S2O8^2-, 1 ml starch time to react = 20 seconds...
February 24, 2016

Chemistry
I looked part 2 for a bit and by looking at the slow step and using that to figure out the rate law I think it might be mechanism 2, would this be right?
February 24, 2016

Chemistry
PART 1 >>Trial 1 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 10 ml S2O8^2-, 1 ml starch time to react = 10 seconds >>Trial 2 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 5 ml S2O8^2-, 1 ml starch time to react = 20 seconds...
February 24, 2016

Chemistry
I have to write the rate law for two elementary reaction equations A ) 2a+b>c+d B ) X+Y>Z I'm pretty sure it's just k[ A ][ B ] and k[ X ][ Y ] but does the coefficient affect it in this case? is it [ A ]^2 ?
February 24, 2016

Math
I need to find the limit as x goes to 3 of (1-sqrt(x-2))/(x-3)), I know the answer is -1/2 but I have no idea how to get to the answer, and help would be appreciated
February 17, 2016

Chemistry
I have to calculate the heat capacity of a coffee cup calorimeter, but I'm not sure how. I have NaCl and NaOH, they both start at the same temperature, and I have the mass of the solutions used. I'd appreciate the help!
February 8, 2016

Science
Hydrogen peroxide can be prepared in several ways. One method is the reaction between hydrogen and oxygen, another method is the reaction between water and oxygen. Calculate the ΔG°rxn of each reaction below? 1) H2(g) + O2(g) <==> H2O2(l) ΔG°rxn=? (in ...
February 5, 2016

Math
find the limit as x->3 of (1-sqrt(x-2))/(x-3) I'm not sure how to get the answer, I know it's -1/2, but I don'y know how to get that.
February 4, 2016

math
The graph of y=x^2 is transformed by a stretch of scale factor 2 parallel to the x axis, followed by a translation of (0 3). WRITE DOWN the equation of the new graph
February 3, 2016

chemistry
12
January 24, 2016

chemistry
16
January 24, 2016

Math
Emily wants to make a regtangular model with a height of one connecting cube. she wants to make the model in exactly 2 different ways. how many connecting cubes could Emily use to make the model in only 2 ways. A6, B12, C16, D18
January 12, 2016

Chemistry
A chemical technician prepares Ni(NH3)6Cl2 by adding 4.55 g of solid NiCl2·6H2O to 25 mL of 6.0 M aqueous NH3. What is the maximum mass of Ni(NH3)6Cl2 that will be produced? how would I do this question?
December 14, 2015

PHYSICS
Hello?
December 14, 2015

Chemistry
I have to list distributed benzene in order of polarity, and I don't think i know how to do that, but does polarity have to do with dipole moments?
December 9, 2015

Chemistry
I just need someone to check over my answers, I'm pretty confident in all of them! In which six-membered hydrocarbon rings are all of the C-C-C angles roughly the same, i.e., within 1o? Select ALL that apply. Question 1 options: A)cyclohexane B)cyclohexene C)1,3-...
December 9, 2015

Chemistry
I've changed my answer for part one to a) N-O bond length in >>> 4 b) N-O double bond in NO2H >>> 1 c) N-O bond length in NO3- >>> 2 d) N-O bond length in NO2- >>> 3 e) N-O single bond in NO2H >>> 5
December 8, 2015

Chemistry
Draw the best Lewis structures for NO+, NO2-, NO2H, and NO3-. Based on the Lewis structures, list all of the the N-O bonds lengths in order of shortest (1) to longest (5). N-O bond length in >>> 2 N-O double bond in NO2H >>> 1 N-O bond length in NO3- >>...
December 8, 2015

Chemistry
NEVER MIND. it was hydrogen bonding, I didn't see the OH group
December 7, 2015

Chemistry
Identify the predominant intermolecular force in each of these substances. 1. Hydrogen 2. Dipole-Dipole 3. London A)H20 B)NH3 C)CH3 C=O OCH3 D)CH4 E)CH OH-C-OH CH3 what I have so far is A) 1 B) 1 C) 2 D) 3 E) I'm not sure about E, I think it might be dispersion?
December 7, 2015

Critical thinking (Check)
4. The newly elected Canadian government is planning on withdrawing Canada’s CF-18 jets from the allied bombing campaign against the Islamic State (aka ISIS, aka ISIL, aka Daesh) forces within Iraq and Syria. The Conservative opposition in Parliament is opposed to the ...
December 6, 2015

Critical thinking
what I was thinking was that the premises are good and the argument is good the conclusion is flawed because those mean it's a good class, but not necessarily the MOST important class
December 6, 2015

Critical thinking
the conductive argument is talking about critical thinking classes the premises are all separate premises leading to the conclusion P1. Critical thinking teaches the fundamentals of good reasoning. P2. Critical thinking helps people learn how to detect bad reasoning in the ...
December 6, 2015

Critical thinking
3. Consider the following conductive argument: P1. Critical thinking teaches the fundamentals of good reasoning. P2. Critical thinking helps people learn how to detect bad reasoning in the arguments they hear and read. P3. Critical thinking principles underlie all the academic...
December 6, 2015

Critical thinking
((Remember that for an inductive inference with linked premises to be valid the premises must be acceptable and they must be sufficient to render the conclusion probable. An assessment of inductive validity requires you to explain your reasons for weighing the evidence as you ...
December 6, 2015

Critical thinking
I have finished my assignment I just need someone to read it over and check my logic, please and thank you! 1. Read the following argument and answer the question that follows: 1. According to the 2010/11 Statistics Canada census aboriginal Canadians constituted 4.3% of the ...
December 6, 2015

Philosophy
If you have a inductive argument, and you're evaluating if the conclusion is valid or not, if you can figure out a different conclusion is it valid or not?
December 6, 2015

math
Can you tell me what, (in greatest to least) the order is... 1/2, 4/5, 5/6, 2/3 7/8, and 1/4. this will be greatly appreciated.Thx.
December 3, 2015

math
the spanish club is selling t-shirts and baseball caps as a fund raiser if the baseball cap cost $1.13 to make and sell the shirt for $5 how much profit does the club make for each shirt?
November 29, 2015

PHYSICS
A Solid Cube Of Steel Has Each Side 10cn Long.Find Its Mass If The Density Of Steel Is 6.5g/cm
November 29, 2015

physics
E.P=mgh M=0.5 G=10ms-2 H=1.8-1.3=0.5 E.P=0.5*10*0.5 E.p=2.5
November 29, 2015

Chemistry
1. In the lab you will be provided with 0.1 M sodium hydroxide that you will standardize using KHP. What is implied by writing the NaOH concentration as 0.1 M? a) After performing your standardization and calculations, any deviation from 0.1000 M is due to experimental error. ...
November 24, 2015

Chemistry
1. Which molecule should have the higher dipole moment, and why? a) COF2 because it contains more F atoms. b) COFH because the polar bonds in COF2 nearly cancel each other out. c)COF2 because it contains more lone pairs. >> I think the answer is a)?
November 22, 2015

Chemistry
Anthracene is a yellow, crystalline solid found in coal tar. Complete this structure for anthracene, C14H10, by adding bonds and hydrogen atoms as necessary. What type of hybrid orbitals are utilized by carbon in anthracene? >>sp3 How many σ bonds and π bonds ...
November 22, 2015

Critical thinking
I've seen these questions asked today/yesterday (and answered) but I just wanted someone to check over my answers to see if they make sense. 1. Assume that the conclusion of an argument is the claim: It is wrong to inflict suffering on animals. For each of the following ...
November 22, 2015

Philosophy
I've seen these questions asked today/yesterday (and answered) but I just wanted someone to check over my answers to see if they make sense. 1. Assume that the conclusion of an argument is the claim: It is wrong to inflict suffering on animals. For each of the following ...
November 22, 2015

math
21 boys, 21 girls. 7:5 - 6 girsl is 21 boys to 15 girls [think -6]
November 19, 2015

chem
What is the electron configuration for the aluminum ion? Phosphide ion? Do NOT use shorthand notation! My answer but when I input it I get it wrong why? Al: 1s^2,2s^2,2p^6,3s^2,3p^1 P: 1s^2,2s^2,2p^6,3s^2,3p^3
November 15, 2015

Chem
In the reaction that forms aluminum nitride from its elements, which element is being oxidized?
November 15, 2015

Newburgh
Algebra
November 10, 2015

CHEMISTRY - BATTERIES
What is the voltage and the Gibbs Free Energy for the following reaction? (Assume standard conditions) 3Sn^2+ (aq) + 2Al (s) --> 2 Al^3+ (aq) + 3 Sn (s) Now calculate the Gibbs Free Energy for the above reaction if Sn^2+ (aq) is 0.15 and Al^3+ (aq) is 1.8
November 9, 2015

Chemistry
You synthesized copper (I) chloride and copper (I) oxide. How do they differ from their copper (II) analogs? comment on the stability of these moist solids in air. If unstable, what is the likely product of decomposition? -I'm not really sure where to go with this one, ...
November 8, 2015

Math
** -4(-5)+1=??
November 8, 2015

Math
It's not b for example, for -5, put that in where it says x in the original equation so, 4*(-5)+1=??
November 8, 2015

Math
the way to solve this question is to plug in the values to the "x" in the equation
November 8, 2015

Math
What did you get when you tried to answer this?
November 8, 2015

Chemistry
How do I calculate the percent yeild of copper give the mass and concentration of Cu(NO3)2 and the final mass of copper
November 8, 2015

Chemistry
is it easy to distinguish between between the different oxidation states of copper? why? -I answered yes because copper (I) is not as stable as copper (II), and there is a noticeable colour difference You synthesized copper (I) chloride and copper (I) oxide. How do they differ...
November 8, 2015

Chemistry
In a copper cycle lab if I add HCl to CuO to produce CuCl, what would a word equation for that reaction be? Is it a chemical reaction? and also for that step what complexes are observed? what does that mean?
November 8, 2015

Chemistry
1. is it easy to distinguish between between the different oxidation states of copper? why? 2. You synthesized copper (I) chloride and copper (I) oxide. How do they differ from their copper (II) analogs? comment on the stability of these moist solids in air. If unstable, what ...
November 8, 2015

Chemistry
In a copper cycle lab if I add HCl to CuO to produce CuCl, what would a word equation for that reaction be? Is it a chemical reaction? and also for that step what complexes are observed? what does that mean?
November 8, 2015

Critical thinking
I posted this question earlier but I still need help with this. I need to explain how this argument could be constructed as circular, the argument is [W]e may observe, that there is no species of reasoning more common, more useful, and even necessary to human life, than that ...
November 6, 2015

Critical thinking
I went over the argument and separated it into different parts, and from that I got 1)There is no reasoning more useful/common that testimony 2)Some say testimony is not be founded on the relation of cause and effect 3)It’s good enough to notice that out promise in this ...
November 6, 2015

Critical thinking
I need to explain how this argument could be constructed as circular, the argument is [W]e may observe, that there is no species of reasoning more common, more useful, and even necessary to human life, than that which is derived from the testimony of men, and the reports of ...
November 6, 2015

Philosophy- Critical thinking
U of M? (I've asked the first pat recently) it's a few down, go look at it
November 6, 2015

Critical thinking - Reed?
That is what I meant, thank you for correcting me.
November 5, 2015

Critical thinking - Reed?
You're right, so it should be unacceptable by observation. Good spot!
November 5, 2015

Critical thinking - Reed?
It could also be by testimony, but it is something someone would know by paying attention to news or other stuff like that..
November 5, 2015

Critical thinking - Reed?
Thank you for your help!
November 5, 2015

Critical thinking - Reed?
vi) + xi) Since I myself have not been to Japan and have to rely on looking it up else where wouldn't it be testimony? vii) Could it be acceptable by observation since that it something we have seen ourselves?
November 5, 2015

Critical thinking - Reed?
I have finished my assignment I and would like if someone could look it over and tell me if I'm really off on any points? (i) John will either score 10/10 on the assignment or he will not -Acceptable by observation (ii) David Johnston is Canada’s head of state -...
November 5, 2015

Critical thinking
I need to identify if each premise is acceptable or unacceptable, and for this the conditions of acceptability are acceptable by observation, testimony, authoritative testimony (only use if the premise explicitly refers to an authority), and a priori And the conditions of ...
November 5, 2015

Critical thinking
I need to identify if each premise is acceptable or unacceptable, and for this the conditions of acceptability are acceptable by observation, testimony, authoritative testimony (only use if the premise explicitly refers to an authority), and a priori And the conditions of ...
November 4, 2015

Chemistry
A 18.7 g sample of CaCO3 was treated with aqueous H2SO4 producing calcium sulfate, water and 3.65 g of CO2(g) according to: CaCO3(s) + H2SO4(aq) -> CaSO4(s) + H2O + CO2(g). What was the percent yield of CO2?
October 26, 2015

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