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Questions Asked on October 11, 2011

Imagine that you mix 50 g of a solute with 100 g of water at 40 degree C.Classify each solute by whether it would completely or
1. 2 answers
2. asked by Steph
3. 7,476 views
"Use a 10% w/v nitric acid solution."How to prepare 10% w/v nitric acid solution? Do I just weigh 10g of conc nitric acid (65%)
1. 3 answers
2. asked by jessie
3. 4,261 views
Which of the following reactions are redox reactions?1. Al(s)+3Ag^+(aq)-->Al^3+(aq)+3Ag(s) 2. SO3(g)+H2O(l)-->H2SO4(aq) 3.
1. 3 answers
2. asked by julie
3. 4,047 views
Consider a system consisting of two oppositely charged spheres hanging by strings and separated by a distance r1, as shown in
1. 2 answers
2. asked by echo
3. 3,873 views
"A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of
1. 6 answers
2. asked by Christian
3. 3,853 views
1. The difference between three times a number and 11 is 10.Whould it be: 3x - 11 = 10? 2. One more than the difference between
1. 20 answers
2. asked by Dab
3. 3,587 views
A golf ball is hit with a velocity of 24.5 m/s at 35.0 degrees above the horizontal. Finda) the range of the ball, and b) the
1. 1 answer
2. asked by Joy
3. 3,265 views
leaf:spinach::root:Is it flower,carrot,tomato,and lettuce?
1. 7 answers
2. asked by renae3
3. 3,123 views
At a certain temperature , 0.960 mol of SO3 is placed in a 3.50 L container.2SO3 ----> 2SO2 + O2 At equilibrium , 0.190 mol of
1. 2 answers
2. asked by Alexis Moran
3. 2,976 views
sodium metal reacts violently with water to produce aqueous sodium hydroxide and hydrogen gas. calculate the enthalpy change for
1. 5 answers
2. asked by Maci
3. 2,891 views
A golf ball is hit with an initial velocity of 50 m/s at an angle of 45° above the horizontal. How far will the ball travel
1. 2 answers
2. asked by ashley
3. 2,874 views
An electric motor is used to pull a 125 kg box across a floor using a long cable. the tension in the cable is 350N and the box
1. 2 answers
2. asked by Ivo
3. 2,802 views
A Kid applies a force of 70 Newtons to a ball over 1.1 meters.How much work did he do on the ball?
1. 2 answers
2. asked by jasmine
3. 2,602 views
line BC in one side of a regular n-gon. the sides next to line BC are extended to meet at point W. Find the measure of angle W
1. 3 answers
2. asked by Anonymous
3. 2,580 views
You have a solution that contains 5.0 grams of oxalic acid dissolved in 150 mL of water. This solution is placed in a separatory
1. 2 answers
2. asked by BOB
3. 2,442 views
Luisa ran 3 miles on the 3rd day of a month, and she repeated her run every 4 days for the rest of the month. What equation
1. 9 answers
2. asked by Dab
3. 2,402 views
A new software company wants to start selling DVDs with theirproduct. The manager notices that when the price for a DVD is 16
1. 2 answers
2. asked by
3. 2,358 views
The small archerfish (length 20 to 25 cm) lives in brackish waters of Southeast Asia from India to the Philippines. This aptly
1. 2 answers
2. asked by tibby
3. 2,131 views
A random experiment of tossing a die twice is performed. Random variable X on thissample space is defined to be the sum of two
1. 2 answers
2. asked by padma.c
3. 2,086 views
A student puts a 0.80 kg book against a vertical wall and pushes the book toward the wall with a force of 26N [R]. The book does
1. 3 answers
2. asked by Ika
3. 2,068 views
the instruments attached to a weather balloon have a mass of 5.0 kg. the balloon is released and exerts an upward force of 98 N
1. 0 answers
2. asked by tayler
3. 2,047 views
an observer stands 200 m from the launch site of a hot-air balloon. the balloon rises vertically at a constant rate of 4 m/s.
1. 2 answers
2. asked by Andres
3. 1,994 views
22. The following table shows the price of a specific stereo receiver for a five-year period. Using year 3 as the base year,
1. 2 answers
2. asked by marc
3. 1,975 views
Sulfuric acid dissolves aluminum metal according to the following reaction:2Al(s)+3H2SO4(aq)-->Al2(SO4)3(aq)+3H2(g) Suppose you
1. 2 answers
2. asked by julie
3. 1,929 views
Consider the following reaction:Li2S(aq)+Co(NO3)2(aq)-->2LiNO3(aq)+CoS(s) What volume of 0.150 M Li2S solution is required to
1. 1 answer
2. asked by julie
3. 1,890 views
Balance each of the following redox reactions and classify it as a combination, decomposition or displacement reaction.a)
1. 2 answers
2. asked by Cassaundra
3. 1,812 views
"Regular aerobic exercise gives an individual more endurance" is a sentence that shows cause and effect. Which word indicates
1. 2 answers
2. asked by Baina
3. 1,809 views
A city survey found that 47% of teenagers have a part time job. The same survey found that 78% plan to attend college. If a
1. 2 answers
2. asked by Olivia
3. 1,712 views
a volume of 10.0 ml of a 0.00450 M solution of Cl- ions are reacted with 0.500 M solution of AgNO3.What is the maximum mass of
1. 2 answers
2. asked by sam
3. 1,689 views
25. The following table shows the price of a specific stereo receiver for a five-year period. Using Year 1 as the base year,
1. 2 answers
2. asked by marc
3. 1,681 views
1. A manager wishes to find out whether there is a relationship between the age of his employees and the number of sick days
1. 2 answers
2. asked by azriel ed pagayunan
3. 1,655 views
18. The following is a list of figures for a given year in billions of dollars. Using this data, compute: (a) GDP; (b) NDP; (c)
1. 6 answers
2. asked by marc
3. 1,638 views
during a football game two players try to tackle another player.one player applies a force of 50.0 n to the east. a second
1. 1 answer
2. asked by sarah arcand
3. 1,573 views
27. The following data show nominal GDP and the appropriate price index for several years. Compute real GDP for each year and
1. 3 answers
2. asked by marc
3. 1,558 views
A jet aircraft is traveling at 180 m/s in horizontal flight. The engine takes in air at a rate of 77.0 kg/s and burns fuel at a
1. 1 answer
2. asked by mymi
3. 1,504 views
Consider the expected conductivities of CaCl2(aq) and Ca(OH)2(aq). Which of these can be expected to have the higher
1. 1 answer
2. asked by Al
3. 1,504 views
Suppose a retiree wants to buy an ordinary annuity that pays her $2,000 per month for 20 years. If the annuity earns interest at
1. 2 answers
2. asked by beech
3. 1,489 views
what is the net ionic equation for:Mn+Ni(NO3)2 -> Mn(NO3)2+Ni Is the answer no reaction or is Nickel considered a state change??
1. 1 answer
2. asked by Cassandra
3. 1,489 views
Determine the slope of an area, given the following: Start measuring at 700 feet. Measure a distance of four miles, and end at
1. 1 answer
2. asked by jayy
3. 1,464 views
Imagine that Earth did not turn on its axis.(a) What would be true about the ecliptic? It would now define the day rather than
1. 3 answers
2. asked by Anonymous
3. 1,444 views
a) Calculate [H3O^+] in a 0.15M solution of benzonic acid, HC7H5O2(aq) having K of 6.4x10^-5.b) Calculate the per cent
1. 4 answers
2. asked by Sarah
3. 1,417 views
I was wondering if what i did is correct1. Read Susan B. Anthony’s defense of her right to vote. Then, in 50-100 words, write
1. 3 answers
2. asked by Anonymous
3. 1,367 views
On an activity series for metals aluminum is more active than hydrogen. Write the correct reaction to describe putting a piece
1. 2 answers
2. asked by bob
3. 1,361 views
A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 4.00 104
1. 1 answer
2. asked by Anonymous
3. 1,349 views
Each of 108 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first
1. 0 answers
2. asked by Josh
3. 1,346 views
In a "Rotor-ride" at a carnival, people are rotated in a cylindrically walled "room." The radius of the room is 5.5 m, The
1. 1 answer
2. asked by Alex
3. 1,341 views
C3H6O + 4 O2 �¨ 3 CO2 + 3 H2O how many coefficients?
1. 1 answer
2. asked by Anonymous
3. 1,335 views
I have no idea where to even start with this problem on my pre-lab!For part of the experiment, you will need to prepare 100 mL
1. 2 answers
2. asked by Jen
3. 1,316 views
23. The next four questions refer to the following price and output data over a five-year period for an economy that produces
1. 3 answers
2. asked by marc
3. 1,307 views
churvas mass is 66kg. find his weight on earth and on the moon.
1. 2 answers
2. asked by james harold
3. 1,246 views
Complete and balance each of the following equations for gas-evolutions. Express answer as a chemical equation. Identify all the
1. 1 answer
2. asked by julie
3. 1,232 views
can someone help me turn this paragraph so it can sound like a personal narrative,A week has passed since the dog left. We
1. 0 answers
2. asked by Mario Garcia
3. 1,226 views
Which expression describes the area in square units of the rectangle that has a length of 10x^3y^4 units and a width of 5x^2y
1. 1 answer
2. asked by Nora Escobedo
3. 1,196 views
1. A car travels 20 kilometers per hour faster than a second car. The first car covers 180 kilometers in the same time the
1. 3 answers
2. asked by cassie
3. 1,196 views
Consider an RV X with the following density given parameters α and γ .f (x) = {(1/γ)e^(-(x-α)/γ) if x>α {0 if x ≤ α. a.
1. 0 answers
2. asked by Molly
3. 1,191 views
calculate how many mL of 6M HCL are needed to prepare 100mL HCL solution with a concentration of ~1M?
1. 2 answers
2. asked by jj
3. 1,175 views
1)what is the name of the common commercial chemical that is always obtained from the reaction of fats and strong bases such as
1. 1 answer
2. asked by Anonymous
3. 1,172 views
a jogger runs with a veloicty of 6km/h (25 degrees N of W) for 35 min and then changes direction, Jogging for 20 min at 4.5km/h
1. 1 answer
2. asked by neil
3. 1,165 views
A 75.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 24 V, what is the
1. 2 answers
2. asked by ashley
3. 1,161 views
A sample of 12 measurements has a mean of 20 and a standard deviation of 2. Suppose that the sample is enlarged to 14
1. 0 answers
2. asked by Bob
3. 1,161 views
According to the Sarbanes-Oxley Act, the responsibility for issuing a report on a company's internal controls over financial
1. 0 answers
2. asked by HELP!
3. 1,157 views
Two speakers are separated by distance d1 = 2.40 m and are in phase. You are standing 3.00 m directly in front of one speaker.
1. 0 answers
2. asked by Anonymous
3. 1,139 views
Calculate the molality of a 10% H3PO4 solution in water.
1. 0 answers
2. asked by Keva
3. 1,130 views
An investment broker reports that yearly returns on common stocks are normally distributed with a mean of 12.4 percent and a
1. 0 answers
2. asked by Michael
3. 1,120 views
caculation:2Na3PO4(aq)+3BaCl2(aq)-> 6NaCl(aq)+Ba3(PO4)2(s) a)determine the maximum g of Ba3(PO4)2 that can be formed from your
1. 1 answer
2. asked by marilyn
3. 1,112 views
Can you draw a dipeptide and show all the functional groups, atoms, and bonds, any full charges on atoms, and the "R" group.Also
1. 2 answers
2. asked by Sam
3. 1,095 views
A crate starts from rest and slides 8.35 m down a ramp. When it reaches the bottom it is traveling at a speed of 5.25 m/s. The
1. 1 answer
2. asked by Kayla L
3. 1,087 views
The half-life of carbon-14, which is used in dating archaeological finds, is 5730 yr. Assume that 100% of the carbon-14 is
1. 3 answers
2. asked by Hanna
3. 1,081 views
In a murder trial in Los Angeles, a shoe expert stated that the range of heights of men with a size 12 shoe is 72 inches to 76
1. 1 answer
2. asked by Michael
3. 1,077 views
Studies have shown a particular television commercial is understood by 25% of first grade students and 80% of fourth grade
1. 5 answers
2. asked by Khizar
3. 1,077 views
how much MgCl2 would you use to make 200mL of a 100mM solution of MgCl2
1. 1 answer
2. asked by denise
3. 1,052 views
Each of 108 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first
1. 1 answer
2. asked by Josh
3. 1,048 views
The electric motor of a model train accelerates the train from rest to 0.780 m/s in 33.0 ms. The total mass of the train is 510
1. 3 answers
2. asked by Anonymous
3. 1,040 views
A ball is thrown horizontally from a height of 18.18 m and hits the ground with a speed that is 4.0 times its initial speed.
1. 2 answers
2. asked by chad
3. 1,026 views
How were different forms of power acquired during industrialization?
1. 1 answer
2. asked by max
3. 1,022 views
The cart starts from rest at the top of a hill with height, H1. It rolls down the hill and at the bottom of the hill it has a
1. 1 answer
2. asked by zacurea
3. 1,018 views
(2,1) is a point on the graph of y= f (x) . Find the corresponding point on the graph of each of the following functionsa) y= -f
1. 0 answers
2. asked by Tarkan
3. 1,017 views
Would 48x 2/96 be considered a Mltiplicative inverse???
1. 1 answer
2. asked by AliceinWonderland
3. 1,017 views
assume that $10 million dollars of debt replaces 625,000 shares of common stock. The intrest in the new stock is 11.25 percent
1. 0 answers
2. asked by tony
3. 1,017 views
the instruments attached to a weather balloon have a mass of 5.0 kg. the balloon is released and exerts an upward force of 98 N
1. 0 answers
2. asked by tayler
3. 1,010 views
Two objects (m1 = 5.15 kg and m2 = 2.75 kg) are connected by a light string passing over a light, frictionless pulley as in the
1. 0 answers
2. asked by dennis
3. 997 views
use the quotient and reciprocal identities to simplify the given expressioncot t sin t csc t sin t tan t cot t cot t sec t
1. 1 answer
2. asked by Anonymous
3. 991 views
A 1,000.0 Kg car with a speed of 90.0km/h brakes to stop. How many cal of heat are generated by the brakes as a result?
1. 0 answers
2. asked by ANTOINE
3. 979 views
How many grams of Calcium Chloride can be formed by reacting 50.05 g of Calcium carbonate with 900.00 ml of .8000 M hydrochloric
1. 0 answers
2. asked by Anonymous
3. 971 views
Researchers have found that, during childhood:A) girls' gender schemas are more rigid than boys' gender schemas. B)when boys
1. 5 answers
2. asked by missy
3. 958 views
A string is tied to a 4.4 kg block and a 120 g bucket from a pulley. Students add 20 g washers one at a time to the bucket. the
1. 0 answers
2. asked by Ika
3. 955 views
How does online classes and traditional education classes contain structure?
1. 1 answer
2. asked by Adryan
3. 950 views
Complete and balance each of the following equations, some may have no reactions.NaNO3(aq)+KCl(aq)-->
1. 0 answers
2. asked by julie
3. 945 views
Can you please check if everything is OK? Thank you1)The witches predict Macbeth that he would be Thane of Cowdor. 2)They
1. 1 answer
2. asked by Henry2
3. 941 views
Toyota used to sit on top of the world. It basked in the reputation of building high-quality cars efficiently. It enjoyed
1. 1 answer
2. asked by lola
3. 940 views
A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling
1. 0 answers
2. asked by riley
3. 919 views
Salma invested her savings in two investment funds. The that she invested in Fund A returned a profit. The amount that she
1. 1 answer
2. asked by Jasmine
3. 915 views
A slotted bar is attached to the origin and rotates in the horizontal plane with a constant angular velocity of 0.665 radians/s
1. 1 answer
2. asked by HELP PLEASE! DOn't know How to do it!!! :(
3. 911 views
How to prepare 10% w/v nitric acid solution?Do I just weigh 10g of concentrated nitric acid (65%) and dilute to 100ml with
1. 1 answer
2. asked by jessie
3. 910 views
construct the confidence interval for the population mean c=0.98,x=5.6, s=0.6, and n=45
1. 0 answers
2. asked by Dennis
3. 910 views
Ok today during social studies I got this mini progress report (it's a overview on what grade I have right now before they send
1. 5 answers
2. asked by Laruen
3. 900 views
1. Suppose Mary deposits $200 at the end of each month for 30 years into an account that pays 5% interest compounded monthly.a.
1. 2 answers
2. asked by beech
3. 898 views
The energy levels the electron can occupy in the H atom can be calculated using the energy level equation. Calculate the
1. 1 answer
2. asked by Chris
3. 886 views
Find an equation for the linear model of the situation below and use it to make a prediction. A train is traveling north at a
1. 0 answers
2. asked by Mary
3. 876 views
An 27 liter indoor air sample is collected in a Tedlar bag in the crawl space of a building built on an old municipal dump.
1. 0 answers
2. asked by steve
3. 868 views

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