Wednesday

October 14, 2015
Total # Posts: 699

**chem**

Keq for the reaction 2HI <----> H2 +I2 has a value of 1.85x 10^-2 at 425 degrees celsius. If 0.18 mol of HI is placed in a 2.0 L flask and allowed to come to equilibrium at this temperature. What will the equilibrium of [I2} be?
*October 13, 2015*

**chem**

0.020 mol of each SO2 and O2 and So3 is placed in a 1.0 L flask and allowed to come to equilibrium. The equilibrium of [SO2] is found to be 0.0080M. What is the value of keq for the reaction: 2SO2+O2<----> 2SO3
*October 13, 2015*

**chem**

A 3.00 L flask contains 6.00M H2, 6.00M Cl2, 3.00M HCl at equilibrium. An additional 15 mol of HCl is injected into the flask. What is the [Cl2] when equilibrium is re- established?
*October 13, 2015*

**MATH**

x+3y=400 15x+8*3y=L 15(400-3y)+8*3y+L
*October 10, 2015*

**Algebra**

y=mx+b 1=(-3/2)(0)+b b=1 y=(-3/2)x+1
*October 10, 2015*

**Calculus**

Sketch the vector field F⃗ (r⃗ )=2r⃗ in the plane, where r⃗ =⟨x,y⟩. Select all that apply. A.All the vectors point away from the origin. B. The vectors increase in length as you move away from the origin. C. All the vectors point toward ...
*October 10, 2015*

**math **

supposed that k is a random variable. given that P(-3.7<=k<= 3.7) = 0.525 and that P(k<3.75) = P(k>3.7), find P(k>3.7).
*October 7, 2015*

**math **

determine the y-intercept and slope of the linear equation y=-6+3x
*October 7, 2015*

**Math**

supposed that two balanced dice are rolled. let Y denote the product of the two numbers. use random variable notation to represent the event that the product of the two numbers is greater than 4 a {5,6} b {XY>4} c{Y>4} d P(Y>4)
*October 7, 2015*

**statistics**

supposed that two balanced dice are rolled. let Y denote the product of the two numbers. use random variable notation to represent the event that the product of the two numbers is greater than 4 a {5,6} b {XY>4} c{Y>4} d P(Y>4)
*October 7, 2015*

**Math**

If 10 classes in 10 schools receive 10 calculators each, which expression (10+10+10 or 10x3 or 1000 ) represent the amount of calculators the school discrit will buy.
*October 5, 2015*

**Organic Chemistry**

Describe why an unsubstituted C6 ring doesnt have any steric strain, torsional strain or angle strain.
*October 5, 2015*

**Chemistry**

Calculate the mass of a sample of gold that occupies 0.723 cm3. The density of gold is 19.3 g/cm3. Answer in units of g.
*September 30, 2015*

**Chemistry**

If the color of a silver nanoparticle remains constant, what does that tell you about the tendency of the particles to aggregate under those conditions? I think the particles won't aggregate, but I am not sure why. Is it because the atoms are moving at a constant rate?
*September 24, 2015*

**Calc- Limits**

what is the limit of x as it approaches 1 when x/ln x?
*September 23, 2015*

**Pre-Calculus**

Why does sin 30° = 150° (or sin π/6 = sin 5π/6)? Refer to both the unit circle and the graph of the sine curve.
*September 21, 2015*

**precalc**

Given that sec 3π/10 ≈ 17/10 and csc 3π/10 ≈ 17/14, find the following: 1. sin 3π/10 ≈ 14/17 (is this one correct) 2. csc 43π/10 ≈ 3. sec 2π/10 ≈ 4. cot -12π/10 ≈ 5. tan π/5 ≈ 6. sin -7π/10 &#...
*September 16, 2015*

**precalc**

are these correct? 1. (√19)/9 2. √19/10 3. 1/10 and i'm not sure how to do 4 and 5
*September 16, 2015*

**precalc**

Given that sin 64° = 9/10 and cos 64° = (√19)/10 find the following: 1. cot 64° = 2. cos -64° = 3. csc 64° = 4. csc -26° = 5. sec 244° =
*September 16, 2015*

**precalc**

what is the value of cot 2π/5? how do i find the answer?
*September 14, 2015*

**vocabulary**

I need the word stratify in a sentence for a 7th grader
*September 13, 2015*

**math**

1 mulliken = 10 inches 11 9/10 inches = how many mullikens? 5 13/16 inches = how many mullikens?
*September 12, 2015*

**algebra**

is f(x)=5+√2-x an increasing or decreasing function?
*September 11, 2015*

**trigonometry**

Angles of the triangle: ∠A=30° ∠B=60° ∠C=90° Hypotenuse: 1 mulliken (10 inches) How can I find the sin A, cos A, and tan A?
*September 10, 2015*

**trigonometry**

This was all the information I was given. Would it help to know the angles of the triangle? ∠A=30° ∠B=60° ∠C=90°
*September 10, 2015*

**trigonometry**

The length of AB is 1 mulliken (10 inches) on ΔABC. Calculate the lengths of AC = _____________ mullikens and BC = _____________ mullikens.
*September 10, 2015*

**precalc**

G(x)=2x+7 H(x)=1/(x+2) 1) H(G(x))= J: y=-3x^2 2) J(H(x))= 3) J/H=
*September 9, 2015*

**algebra**

The slope of a line perpendicular to y=-2x+4 is: A) 1/2 B) 1/4 C) 2 D) -2 E) -1/4 F) -1/2 would it be A?
*September 3, 2015*

**Math**

A ribbon is 3 2/3 long. Mae needs to cut the ribbon into pieces that are 2/3 yard long. How much ribbon will be left after she cuts these pieces?
*September 1, 2015*

**physics**

A body travels a distance of 2 m in 2 second and 2.8 m 8m in next 4 second what will be speed of body at the end of 10 th second from the statr
*August 16, 2015*

**Biology**

1) The nose has small __________. 2) Hairs in the nose trap __________. 3) The nose makes a sticky liquid called __________.
*July 15, 2015*

**Chemistry**

Find the number of atoms in 138 grams of nickel. I'm not sure where to start. Can anyone help me?
*June 10, 2015*

**math**

thank you that much I know I just don't know how much to ordinary interest is
*May 20, 2015*

**math**

a loan for $2000 with a simple interest rate of 15% was made on September 29th and was due November 30th I have to find the ordinary interest rate and don't know how I know there are 62 days between those two dates with just two months and one day I don't know the rest
*May 20, 2015*

**math**

a man holds a note of $6,000 that has an interest rate of 13% annually the note was made on march 17 and is due november 11 he sells the note to a bank on june 14 at a discount rate of 12% annually find the proceeds on the third-party discount rate. Ok now I m a little confused
*May 16, 2015*

**math**

A man makes a simple discount note with a face value of $2,200, a term of 140 days, and a 9% discount rate. Find the discount.
*May 16, 2015*

**math**

I borrowed $10,000 on a 120-day note that required ordinary interest at 12.19% I paid $5,000 on the note on the 60th day how much interest did I save by making the partial payment
*May 16, 2015*

**math**

find the adjusted balance due at maturaty for 90 day note of $12,000 at 13.1% ordinary interest if a partial payment of $6,000is made o\n the 60th day of the loan
*May 16, 2015*

**math**

find the adjusted balance due at maturaty for 90 day note of $12,000 at 13.1% ordinary interest if a partial payment of $60,000is made o\n the 60th day of the loan
*May 16, 2015*

**math**

the principle is $700 and the paid $53.96 in interest
*May 16, 2015*

**math**

so i think it will be 45%
*May 16, 2015*

**math**

if i do it for 12 453,264 so it would be for a year it is 700 borrowed for 7 months paid interest 53.96
*May 16, 2015*

**math**

its in months 7 so do i do 12 for a year
*May 16, 2015*

**math**

thank you for all your help now how do i go about finding interest rate
*May 16, 2015*

**math**

2,803.70
*May 16, 2015*

**math**

2,300 plus 2,467.9 i get 4,767.9 but it ifs 90 than it would be 4,767.90 but i dunno is that 9 0r 90 at the end
*May 16, 2015*

**math**

ok if i go 2,300 plus 7.3% i come up with 2,467.9 now is that 2,467.90 or just 2,467.9
*May 16, 2015*

**math**

if i divide it i come up with 94,520.547945204
*May 16, 2015*

**math**

I m still not understanding it im supposed to divide it or x it??
*May 16, 2015*

**math**

i took $2,300.00x7.3%x3 and thats what i came up with?
*May 16, 2015*

**math**

find the marturity value of the loan of $2,300.00 after three years. the loan carries a simple interest rate of 7.3% per year. I came up with $503.70 but not sure if thats right
*May 16, 2015*

**math**

find the interest paid on a loan $2,200 for three years at a simple interest rate of 9% per year what is the interest on the loan
*May 16, 2015*

**Math**

I tried the same thing and then I used the quadratic equation
*May 4, 2015*

**math**

Assume that if students buy more than $250 of art supplies in one visit, they may put it on a student account with terms of 2/10, n/30. If a student purchases $250 of supplies on September 16, what amount is due by September 26? How much would the student save by paying early?
*April 28, 2015*

**math**

I also figured out 2 is the percent he would get 2% if paid by the 10 and all of it total is due by the 28 but I dont get what does 1/15 does it mean that for every day its late he will get 15% added to it?
*April 22, 2015*

**math**

I know N means the net
*April 22, 2015*

**math**

a man gets an invoice for $460 with terms 2/10, 1/15, n28 ow much would he pay 25 after the invoice date? help a little confused?
*April 22, 2015*

**Chemistry**

2D2 + 1O2 --> 2D2O
*April 14, 2015*

**Math**

Find the radius of the circle if an arc of length 5 ft on the circle subtends a central angle of 135°. (Round your answer to two decimal places.)
*April 12, 2015*

**Chem pls!!!!!**

1) name one specific instance in which single displacement reactions can be useful. 2) zn + cucl --> cu + zncl2 in this reaction, a solid would be formed from the copper. what is the solid known as a ___________ please help me
*April 2, 2015*

**Physics **

A cart is moving at 1.01 m/s to the left has a head-on collision with a 28.5 kg cart traveling 2.04 m/s to the right. If the velocity to the first cart is 2.99 m/s to the right, what is its mass?
*March 23, 2015*

**science**

Calculate the average speed of a water molecule (with a mass of 3.0e-26 kg) on the surface of Venus (730 Kelvin).
*March 13, 2015*

**college physics**

When a thin 12.0cm iron rod moves with a constant velocity of 6.50m/s perpendicular to the rod, the induced emf across its ends is measured to be 0.300V. What is the magnitude of the magnetic field?
*March 13, 2015*

**English**

What does the following statement mean? "You can't rearrange the seats on a train"
*March 8, 2015*

**law/521**

this is what it says It's about Target's breach of data back in 2013. The whole case is about chapter 37, fiduciary duty of an officer/director. You need to write an explanation for each a about how the legal concepts the selected case can be applied within a business ...
*March 1, 2015*

**law/521**

doing paper on breach of data from target I dont understand the legal concepts that applied within a business managerial setting I know about the target part but not the rest
*March 1, 2015*

**science**

Paul threw a paper plane towards the west. The wind however caused the plane to move in a southwestern direction Which statement best describes the direction of the wind? (A) The wind is blowing f r o m the east. (B )The wind is blowing f r o m the west. (C) The w ind is ...
*February 18, 2015*

**math**

2 students are chosen at random from a group of 120 students that has 60 boys and 60 girls. What is the probability that the students are either both boys or both girls
*January 20, 2015*

**Geometry **

Does the angle-side relationship in triangles correspond with specific triangles or does it apply in all triangles?
*January 14, 2015*

**Derivative**

Evaluate the following: a) S (4x^2+3)/x^2 dx b) S 4x(x^2+3) dx Please help and show the working so that I can understand as I hv no foundation in derivative. TQ
*January 4, 2015*

**reimbursement**

New medicare payments systems and implementation of SC HI both came out to the? A. Balance budget act. B. Federal act 33-2 C. Retrospective payment system D. Health maintenance organization
*December 18, 2014*

**math**

what is the area of surface of revelution of function x= 1/3(y^2+2)^3/2 between the 1 <= y <= 2 ?
*December 17, 2014*

**Hrm/531**

Im doing a employment law complance plan and i need to know the principles and strategies that apply to the business
*December 6, 2014*

**Hrm/531**

principles and strategies for limousine service.
*December 6, 2014*

**English **

do these following sentences contain appositives? Most people, those of any age, enjoy music The core root of all the problems in the school, including uncleanliness of bathrooms and bad teachers, is the low budget given to the principal.
*November 25, 2014*

**Algebra HELP!**

Ryan is building matchstick square sequences, as shown ( first figure used 4, second figure used 7, third figure used 10, and the forth figure used 13). He used 599 matchsticks to form the last two figures in his sequences. How many matchsticks did he use in each of the last ...
*November 6, 2014*

**maths**

Calculate the amount that will be accumulated after 20 years if $1600 is invested at the beginning of every six months at 13.5% compounded semiannually
*November 3, 2014*

**Writing**

Thank You
*November 2, 2014*

**Writing**

Is "had" an example of a "to be" verb?
*November 2, 2014*

**physics**

A swimmer can swim in still water at a speed of 9.47 m/s. He intends to swim directly across a river that has a downstream current of 4.24 m/s. a) How many degrees from straight across the river should he head? Let upstream be a positive angle. Answer in units of ◦
*October 21, 2014*

**college algebra**

find the zeros of f,f(x) = 2x2 + x − 21 x= ? larger value x= ? smaller value
*October 19, 2014*

**college algeba**

Given r(x) = 6x x + 8 ,find the following. r(−1)= __ r(-3)= __ r(1/2)= __ r(0.1)=__ r(10,000)=___
*October 19, 2014*

**college algebra**

A manufacturer produces a product at a cost of $26.80 per unit. The manufacturer has a fixed cost of $500.00 per day. Each unit retails for $37.00. Let x represent the number of units produced in a 5-day period. Write the profit P as a function of x. (Hint: The profit function...
*October 19, 2014*

**college algebra**

A bus was purchased for $80,000. Assuming the bus depreciates at a rate of $6,000 per year (straight-line depreciation) for the first 10 years, write the value v of the bus as a function of the time t (measured in years) for 0 ¡Ü t ¡Ü 10. v(t)= _____
*October 19, 2014*

**Physics**

A northbound 3000 kg truck collides with an eastbound 2000 kg car. The two vehicles slide together as a single mangled object after the collision, and the direction of the slide is exactly northeast (45 degree angle between north and east). Which vehicle was going faster ...
*October 12, 2014*

**Biology**

Thank You
*October 11, 2014*

**Biology**

How can erosion effect the carbon cycle?
*October 11, 2014*

**Chemistry**

I do not know how to solve this problem. Could you show me how? You have a stock solution of 5.00M H3PO4. a.) What would be the concentration if 20.0mL of the stock solution is diluted to 250.0mL? b.) What volume of the dilute solution would you need if you needed 0.0200mol oh...
*October 7, 2014*

**chemistry**

If He(g) has an average kinetic energy of 7590 J/mol under certain conditions, what is the root mean square speed of F2(g) molecules under the same conditions?
*September 28, 2014*

**chemistry**

Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes saturated with water vapor. If 238.4 mL of gas with a total pressure 1.27 atm was collected via water displacement at 29.4 °C, what is the ...
*September 27, 2014*

**chemistry**

Imagine there is a tank of unknown gas that contains 53.31% carbon, 35.51% oxygen, and 11.18% hydrogen by mass. At 35.0 °C and 0.470 bar, 2.0 L of the gas has a mass of 3.3 g. Using this information, answer the following questions. a.) What is the empirical formula of the ...
*September 27, 2014*

**chemistry**

A 8.50-g sample of solid AlCl3·6H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?
*September 27, 2014*

**chemistry**

Air is 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by moles. What is the density of air at 22 °C and 760 torr? Assume ideal behavior.
*September 27, 2014*

**Biology**

Why does biomass decrease as we move up the biomass pyramid?
*September 27, 2014*

**science**

Is it possible that free Internet content might one day replace textbooks?
*September 13, 2014*

**physics**

1.08*10^8
*September 11, 2014*

**physics **

A skydiver weighs 158 lb. When the skydiver reaches terminal speed, how much air drag does the skydiver experience?
*September 9, 2014*

**physics**

2/√3
*August 20, 2014*