Thursday

November 26, 2015
Total # Posts: 475

**Math**

Thanks. It was 12.5
*November 12, 2015*

**Math**

A Gardner adds 3.5 oz of plant food to 2 gallons of water. The amount he was supposed to add is 4 oz. what is the percent error in mixing the plant food
*November 12, 2015*

**Physics**

A spaceship of mass 2.1×10^6 kg is cruising at a speed of 5.0×10^6 m/s when the antimatter reactor fails, blowing the ship into three pieces. One section, having a mass of 4.8×10^5 kg , is blown straight backward with a speed of 2.3×10^6 m/s . A second ...
*November 11, 2015*

**Science **

Concentrated phosphoric acid is 90% by mass and the remaining mass is water.The molarity of phosphoric acid in 90% is 12.2M at rtp. a)What is the density of the solution at rtp ? b)What volume (in mL)of this solution is needed to make a 1.00L solution of a 1.00M phosphoric ...
*November 11, 2015*

**math**

if a bill is $53.00 tax is 6% and tip is 20% what is the total bill
*November 4, 2015*

**math**

if I invest $5000.00 in an account earning simple interest After 6 years the balance is $6,200. What is the interest rate
*November 4, 2015*

**Math**

If the value of a car decreased by 10 percent and is now worth $ 21,000. What was the original cost of the car?
*October 27, 2015*

**Math**

Thank you Ms Sue. You were a big help
*October 27, 2015*

**Math**

Can you show me the formula
*October 27, 2015*

**Math**

If a car decreased by 10 percent and is now worth $14,000. What was the original price of the car
*October 27, 2015*

**stats**

The controller for a garage door opener has nine binary switches that can be set to either on or off. How many different total settings can be set on this controller?
*October 26, 2015*

**Physics**

Michael Jordan has the record for the highest vertical jump at 48 inches (1.22m). While on the ground, he speeds up over a distance of 0.6 m to achieve the necessary launch speed. What acceleration does his legs provide in order to achieve his height? (Hint: you will need to ...
*October 19, 2015*

**Chemistry**

Write a balanced net ionic reaction for the reduction of cupric ion (Cu2+) by hydroxylamine (NH2OH) in acid solution, using the smallest integer coefficients. (Do not include symbols for state of matter in your answer). in order for this to reduce Cu+2 to Cu+, the ...
*October 19, 2015*

**Physics**

If the rope pulling on the leg exerts a 120-N force on it, how massive should be the block hanging from the rope that passes over the pulley?
*October 16, 2015*

**math**

what is the square root of 288 ?
*September 21, 2015*

**Chemistry**

A mixture of ethane and ethene occupied 35.5 L at 1.000 bar and 405 K. This mixture reacted completely with 110.3 g of O2 to produce CO2 and H2O. What was the composition of the original mixture? Assume ideal gas behavior
*September 21, 2015*

**math**

27.00
*September 21, 2015*

**grammar public school rawlakot**

.75
*September 20, 2015*

**Physics**

A projectile of mass 0.413 kg is shot from a cannon, at height 6.8 m, with an initial velocity vi having a horizontal component of 7.5m/s. The projectile rises to a maximum height of ∆y above the end of the cannon’s barrel and strikes the ground a horizontal ...
*September 16, 2015*

**Math**

A man travels to work everyday at a speed of 40km/h using a car and 6km/h by walking. He arrives at his workshop in 25mins. One day his car broke down and he walked three times as far, thereby arriving at the workshop 17mins late. Calculate the distance from his house to the ...
*September 15, 2015*

**Physics**

Part one was answered, thank you. This was Part one:A runner is jogging at a steady 6.2 km/hr. When the runner is 4.9 km from the ﬁnish line, a bird begins ﬂying from the runner to the ﬁnish line at 24.8 km/hr (4 times as fast as the runner). When the bird...
*August 20, 2015*

**Physics**

A runner is jogging at a steady 6.2 km/hr. When the runner is 4.9 km from the finish line, a bird begins flying from the runner to the finish line at 24.8 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and flies back to the ...
*August 20, 2015*

**Mathes**

400000000
*August 18, 2015*

**Regent University **

A point charge of 0.5 is brought to a point a in free space. How much work is required to do this?
*August 2, 2015*

**physics**

the length of an aluminum is 76.5cm and that of an iron ruler is 80cm at 0¡ãc. at what temperature will the length of the rules become equal
*July 20, 2015*

**uniben/physics**

the length of an aluminum is 76.5cm and that of an iron ruler is 80cm at 0¡ãc. at what temperature will the length of the rules become equal
*July 20, 2015*

**science**

Net force of 10 newton produces an acceleration of 2mts/sec2 in a body moving over a horizontal surface . What is the mass of the body
*July 8, 2015*

**Adjective**

On number one is some an adjective because it's describing sense? Thank you
*July 7, 2015*

**Adjective**

For number 3 the adjective is three sided and wooden? 4)simple and unusual? 5)unlimited? 6) much and first?
*July 7, 2015*

**Adjective**

Please tell me the adjectives in the following sentences. 1)She was blind and deaf but had some sense of touch. 2)Samuel Howe had helped countless handicapped people at Perkins inst. 3) he used unique three sided wooden letters to teach Laura words 4) others doubted whether ...
*July 7, 2015*

**Chemistry**

How energy is needed to vaporize 100 g of ethanol from its boiling point?
*June 24, 2015*

**chemistry **

TWO IDENTICAL mano METERS ARE FILLED WITH MERCURY. THE mano METERS ARE PLACED IN A CLOSED PRESSURIZED BOX CONTAINING AIR AT 1,000 TORR PRESSURE. ONE manometer CONTAINS GAS a, AND THE OTHER GAS B. WHAT IS THE DIFFERENCE BETWEEN THE PRESSURES OF THE TWO GASES? THE DENSITY IS 13....
*June 2, 2015*

**CHEMISTRTY**

i meant manometer
*June 2, 2015*

**CHEMISTRTY**

TWO IDENTICAL NANO METERS ARE FILLED WITH MERCURY. THE NANO METERS ARE PLACED IN A CLOSED PRESSURIZED BOX CONTAINING AIR AT 1,000 TORR PRESSURE. ONE NANO-METER CONTAINS GAS a, AND THE OTHER GAS B. WHAT IS THE DIFFERENCE BETWEEN THE PRESSURES OF THE TWO GASES? THE DENSITY IS 13...
*June 2, 2015*

**CHEMISTRTY**

IF CO2 TRAVELS 20.5 CM DOWN A 46.0 CM GLASS TUBE IN 1.3*10^4 AS IN THE GRAHAMS LAW EXPERIMENT, THEN COLLIDES WITH ANOTHER GAS. WHAT IS THE MOLECULAR MASS OF THE SECOND GAS?
*June 2, 2015*

**physics**

What fraction of the volume of the ball is below the waterline?
*April 28, 2015*

**chemistry**

An optically active compound A, C6H10O2, when dissolved in NaOH solution, consumed one equivalent of base. On acidification, compound A was slowly regenerated. Treatment of A with LiAlH4 in ether followed by protonolysis gave an optically inactive compound B that reacted with ...
*April 10, 2015*

**Calculus**

A rectangular storage container with an open top is to have a volume of k cubic meters. The length of its base is twice its width. The material for the base costs $6 per square meters and the material for the sides costs $10 per square meter.
*April 9, 2015*

**chemistry**

Calculate ▲U,▲H, ▲S, ▲A and▲G in expanding 1 mole of ideal gas at 25 ° c from 10 to 100 dm cubed. (5marks )
*March 21, 2015*

**chemistry**

Distinguish clearly between ▲G for a reaction and ▲S of the same reaction. Which of the two is used to predict whether a reaction is spontaneous? why? (4 marks)
*March 21, 2015*

**Inorganic Chemistry**

Which of the following species contain an inversion center? Choose all that apply. SeF6 [IF4]- SnF4 InH3
*March 5, 2015*

**Inorganic Chemistry**

Which of the following molecules contain a C3 axis but not a σh plane? AlCl3 SeO3 SbBr3 PCl3
*March 5, 2015*

**Inorganic Chemistry**

Which of the following species contain a C4 axis and a σh plane? Choose all that apply. [ICl4]- SiCl4 XeF4 GeH4 [PO4]3
*March 5, 2015*

**Earth Science**

Top carnivore in a food chain
*March 2, 2015*

**math**

Juanita wants to give bags of stickers to her friends. she wants to give the same number of stickers to each friend. she's not sure if she needs 4 bags or 6 bags of stickers. How many stickers could she buy so there are no stickers left over.
*February 23, 2015*

**Science**

please help
*February 23, 2015*

**Science**

Which of the following is an indication that a planet may exist near a distant star A. the star varies in temperature B. The star has a very slight back and forth motion C. the star has very strong gravity D. Radio wave activity increases near the star I think the answer is A
*February 23, 2015*

**Computers**

thank you I hope it is correct
*February 20, 2015*

**Computers**

my answer is also B
*February 20, 2015*

**Computers**

What is one important feature of an AUP? A. a list of all available courses B. a clear outline of the consequences of violating the policy C. a permissive approach to internet usage D. a calendar for the academic year
*February 20, 2015*

**organic chemistry**

Provide a structure for the following compound: C9H10O3; IR: 2400–3200, 1700, 1630 cm–1; 1H NMR: δ 1.53 (3H, t, J = 8 Hz); δ 4.32 (2H, q, J = 8 Hz); δ 7.08, δ 8.13 (4H, pair of leaning doublets, J = 10 Hz); δ 10 (1H, broad, disappears with ...
*February 20, 2015*

**organic chemistry**

Provide a structure for the following compound: C9H10O3; IR: 2400–3200, 1700, 1630 cm–1; 1H NMR: δ 1.53 (3H, t, J = 8 Hz); δ 4.32 (2H, q, J = 8 Hz); δ 7.08, δ 8.13 (4H, pair of leaning doublets, J = 10 Hz); δ 10 (1H, broad, disappears with ...
*February 19, 2015*

**chemistry**

suppose 0.0139g of HNO3 is dissolved in 625 mL of aqueous solution. what is the pH
*February 15, 2015*

**math**

A coin is tossed 3 times. Find the probability that all the 3 are heads (A) if it is known that the first is heads (B) if it is known that the first 2 are heads (C) if it is known that the 2 of them are heads
*February 7, 2015*

**statistics**

A coin is tossed 3 times. Find the probability that all the 3 are heads (A) if it is known that the first is heads (B) if it is known that the first 2 are heads (C) if it is known that the 2 of them are heads
*February 7, 2015*

**Organic Chemistry TLC Chromatography**

If you have 5.6 ml of 95:5 ethyl acetate, how many ml of 85:15 ethyl acetate can you make? Assume unlimited supply of pure ethyl acetate.
*February 3, 2015*

**social studies**

the mediterranean sea
*February 3, 2015*

**mathematic**

a bag contains 3rdmarbles, 2white and 3green a boy takes at one marble at random. what is the prob that it is either red or white?
*February 2, 2015*

**Chemistry**

How many resonance structures do these following acids have? H2CO3-carbonic acid H3PO4-phosphoric acid H2SO4-sulfuric acid HNO3-nitric acid CH3COOH- acetic acid CH2ClCOOH- chloroacetic acid CHCl2COOH- dichloroacetic acid CCl3COOH- trichloroacetic acid
*November 4, 2014*

**Chemistry**

Calculate the volume of 1.00 M acetic acid solution and mass of sodium acetate needed to make 250 mL of a 0.450 M acetic acid/acetate buffer solution with a pH of 4.00. (The pKa is 4.74 for acetic acid) *Please explain it in detail, dont leave a step out! Thank You!
*November 3, 2014*

**Math**

Find the linear approximation of f(x)=ln x at x=1 and use it to estimate ln 1.12. L(x)= ? ln 1.12 \approx ?
*November 1, 2014*

**calculus**

i got maximum to be -¼ and minimum to be -1 and i got it wrong
*October 31, 2014*

**science**

what is the answer to number 2
*October 27, 2014*

**algebra**

Simplify the expression below completely ( x^2-x-30)/( x^2-25)
*October 27, 2014*

**algebra**

Simplify the expression below completely ( x^2-x-30)/( x^2-25)
*October 27, 2014*

**Physics**

At an instant when a soccer ball is in contact with the foot of the player kicking it, the horizontal or x component of the ball's acceleration is 810 m/s2 and the vertical or y component of its acceleration is 910 m/s2. The ball's mass is 0.32 kg. What is the ...
*October 22, 2014*

**physics**

In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a weight of 1.00 ✕...
*October 19, 2014*

**maths**

How much will a buyer pay for 15kg of fish if 1kg costs $435.65‚approximate your awser to the nearest dollar
*September 9, 2014*

**Math**

Ravi is thinking of a 2 digit number.The number is between 40 and 50.the sum of digits in tens and ones place 13. What is the number that Ravi is thinking of? Answer 11 am i rite
*September 3, 2014*

**math**

A random sample was taken from the normal IQ population, which has μ = 100 and σ = 15. ALL INFORMATION IS GIVEN: We gave a random sample of 25 undergrad students (n = 25) a new study pattern to see if it increases their IQ score. The samples mean IQ score is 112. The...
*July 9, 2014*

**Trig**

A 24-foot ladder is placed against a building. The building is perpendicular to the level ground so that the base of the ladder is 11 feet away from the base of the building. How far up the building, in feet, does the ladder reach? Round to nearest hundredth.
*May 19, 2014*

**physic**

In a serious accident, a nuclear power plant's reactor vessel cracks, and all of the cooling water drains out. Although nuclear fission stops, radioactive decay continues to heat
*May 6, 2014*

**physics**

A metal ball of mass 1.8 kg with initial temperature of 46.5 C is dropped into a container of 3 kg of water at 15 C. If the final temperature is 22.6 C, what is the specific heat of the metal? c_metal =____ J*kg*C?
*May 4, 2014*

**Math**

Which relation is NOT a function? Y=0 X=2 Y=2x Y=x+2
*February 6, 2014*

**physics**

A 1500 kg car at rest rolls down a hill inclined at 10 degrees with the horizontal. A 400 N friction force opposes its motion on the inclined plane and a 600 N on the horizontal surface a) how fast will it be moving at point B b) how far from point C will it travel before ...
*January 21, 2014*

**ENGLISH **

Select the complete subordinate clause (including all modifiers). I honestly did not know that you felt so strongly about the subject. A.I honestly b.I honestly did not know c.did not know that you d.that you felt e.that you felt so strongly f.that you felt so strongly about ...
*January 14, 2014*

**Pre-Calculus**

Write an algebraic expression in x for sec(arcsin(x/sqrt(x^(2) +4)))
*January 8, 2014*

**College Algebra**

4^-1.5
*December 11, 2013*

**Statistics**

How do the 3rd grade boys’ weight in Principal Ben’s school compare to the national average (mean weight = 90, sd =15)? Provide the IV, DV, and best method of analysis.
*November 14, 2013*

**social studies**

Which iroquois nations lived the farthest from new york city?
*October 9, 2013*

**chemistry**

What are standard temperature and pressure? Why was a standard needed?
*October 2, 2013*

**Physics**

A car is traveling at 24.4 m/s. If the driver has a reaction time of 1 second, what will be his stopping distance if his car slows down at 8 m/s2?
*September 19, 2013*

**home economics**

Home management,child development n family relationshipa,clothing n textiles,food n nutrition
*September 17, 2013*

**Park University**

The number of arrivals per period is distributed according to the Poisson with an expected value of 0.75 unit per period. The cost of waiting per unit per period is $3.20. The facility cost for serving one unit per period is $5.15. What expected service rate should be ...
*September 15, 2013*

**physics**

a)E(R1+R2)/R2
*September 15, 2013*

**algebrae**

the price of gas in $3.72 per gallon. if Mayra has $20.00, how many gallons of gas can she buy?
*August 12, 2013*

**algebrae**

joey and three of his friends go to the movies. Each ticket costs $7.25. Write an algebraic expression to find to find the total cost of the tickets.
*August 12, 2013*

**Math (Combinatorics)**

Awesome, thanks!
*June 30, 2013*

**Math (Combinatorics)**

In how many ways can I place 5 different beads on a bracelet if flipping or rotating the bracelet does not change the order of the beads?
*June 30, 2013*

**math**

there are 100 people in the u s senate 18 are on the foreign relations committee how many ways are there to select members for this committee if party affiliation is not a issue
*May 24, 2013*

**life orientation**

Sources of environmental health
*May 22, 2013*

**Science(Chemistry)**

Suppose that 23 mL of 0.6 M K2CrO4(aq) reacts with 13.7 mL of AgNO3(aq) completely. What mass of NaCl is needed to react completely with 38.5 mL of the same AgNO3 solution? Answer in units of g
*April 18, 2013*

**anatomy physiology/check please**

Muscular dysgenesis or dysgeny is a lethal, recessive, genetic disease of mice that is caused by a mutation in the mdg gene. Skeletal muscles from dysgenic mice are paralyzed and the animals die shortly after birth. You are a research scientist interested in the finding the ...
*April 4, 2013*

**math**

find mean median and mode of 10 1 10 15 1 7 10 10 1 6 13
*April 2, 2013*

**GEOMETRY**

ANGLES X AND Y ARE SUPPLEMENTARY ,AND THE MEASURE OF ANGLES X IS 24 DEGREES GREATER THAN THE MEASURE OF ANGLE Y. FIND THE ANGLE MEASURES.
*March 20, 2013*

**Physics**

not sure
*March 18, 2013*

**Chemistry**

I have Kc= [(0.065)(0.130)^2]/(0.190^2) Kc= 0.030429 This answer was incorrect. Can you please help correct me?
*March 8, 2013*

**Chemistry**

What is the correct answer?
*March 8, 2013*