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Questions Asked on October 23, 2011

Lithium reacts with nitrogen gas according to the following reaction: 6Li(s)+N2(g)-->2LiN(s)What mass of lithium (in g ) is
1. 4 answers
2. asked by JULIE
3. 12,551 views
Without calculating any frequeny values, select the highest frequency transition in the hydrogen atom.1. From n= 4 to n= 6 2.
1. 3 answers
2. asked by Anonymous
3. 8,120 views
Which of the following have quantized values? The question may have more than one correct answer.1. The pitch of a note played
1. 6 answers
2. asked by Anonymous
3. 6,353 views
Use the molar volume of a gas at STP to calculate the density (in g/L ) of carbon dioxide gas at STP.
1. 2 answers
2. asked by JULIE
3. 6,046 views
1. How much heat energy is lost by 3 kg of water when it cools from 80 degrees C to 10 degrees C?2. A 300 g piece of aluminum is
1. 5 answers
2. asked by Debra
3. 5,918 views
A 260-mL flask contains pure helium at a pressure of 743 torr. A second flask with a volume of 480 mL contains pure argon at a
1. 2 answers
2. asked by JULIE
3. 4,573 views
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Assume the orbit to be
1. 3 answers
2. asked by carlton
3. 4,356 views
If the following function is continuous, what is the value of a + b?f(x) = {3x^2 - 2x +1, if x < 0 a cos(x) + b, if 0 </= x </=
1. 2 answers
2. asked by Mishaka
3. 4,054 views
Ozone is depleted in the stratosphere by chlorine from CF3Cl according to the following set of equations:CF3Cl+UV light-->CF3+Cl
1. 1 answer
2. asked by JULIE
3. 3,795 views
How many mole of H2 will be produced if 0.500 grams of magnesium is reacted with 10.00mL of 2.0 M HCl?I've concluded the answer
1. 4 answers
2. asked by Martin
3. 3,673 views
an 8.5g ice cube is placed into 255g of water. Calculate the temp change in the water upon the complete melting of the ice.
1. 1 answer
2. asked by Monique
3. 3,665 views
An iron anchor weighs 250 pounds in air and has a weight density of 480 lbs/ft3. If it is immersed in sea water that has a
1. 1 answer
2. asked by Hannah
3. 3,615 views
The air in a bicycle tire is bubbled through water and collected at 25 C.If the total volume of gas collected is 5.65 L at a
1. 2 answers
2. asked by JULIE
3. 3,575 views
a string can hold up 12 kg without breaking. You tie the string to a 30kg object sitting on ice and use it to pull the object
1. 2 answers
2. asked by John
3. 3,446 views
What is the frequency of the photons emitted by the hydrogen atoms when they undergo transitions from n=5 to n=3?In which region
1. 1 answer
2. asked by Anonymous
3. 3,096 views
a 4-kg box is pushed across a level floor with a force of 60n for a displacemen of 20m then lifted to a height of 3 m. what is
1. 1 answer
2. asked by kelsie
3. 2,958 views
A baseball is hit at a point of 3 feet above ground at a velocity of 100 feet per second and an angle of 45 degrees. The path of
1. 1 answer
2. asked by Emily
3. 2,673 views
A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium.What is the partial pressure of oxygen when
1. 2 answers
2. asked by JULIE
3. 2,548 views
A sample of N20 gas has a density of 2.65 g/L at 298 K.What must be the pressure of the gas (in mmHg )?
1. 2 answers
2. asked by JULIE
3. 2,265 views
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per
1. 2 answers
2. asked by Jen
3. 2,213 views
An aluminum bar weighs 17 pounds in air. How much force is required to lift the bar while it is immersed in gasoline? The weight
1. 1 answer
2. asked by Hannah
3. 2,130 views
1) Let f(x)=9x-2;g(x)=under square root 3x+7. Find each of the following. A) domain of (f+g) B) domain of fg C) domain of f/g
1. 5 answers
2. asked by Lorry
3. 2,017 views
How much does a 20ft x 10ft x 8ft swimming pool filled with water weight? Assume the water has a weight density of 62 lbs/ft3.I
1. 4 answers
2. asked by Hannah
3. 1,974 views
1. How much potential energy does a 5kg block have if it is 2m above the ground?2. What is the mass of an object that has 40J of
1. 7 answers
2. asked by Dave
3. 1,896 views
Can anyone solveA= 1/2h(a+b) solve for h
1. 1 answer
2. asked by chris
3. 1,865 views
How many grams of a 250- g sample of thorium - 234 would remain after 40 days had passed?
1. 2 answers
2. asked by Divine
3. 1,745 views
Which ion is more strongly hydrated ,1)Fe3+ and Fe2+? 2)Li+ and Na+ ? Thank for helping!
1. 1 answer
2. asked by Namis
3. 1,708 views
Write a function rule for the area A(n) of a square when you know length n of a side?
1. 1 answer
2. asked by Jenny
3. 1,677 views
Compute the orbital radius of an earth satellite that has an equatorial orbit and always remains above a fixed point P on the
1. 1 answer
2. asked by kellie
3. 1,670 views
Need help on part B!A 2.50 mass is pushed against a horizontal spring of force constant 26.0 on a frictionless air table. The
1. 2 answers
2. asked by Cameron
3. 1,666 views
How many mL of O2 will form from 55.2g KClO3?
1. 2 answers
2. asked by Tina
3. 1,572 views
The product of two consecutive positive even numbers is 840. What are the numbers? (Enter solutions from smallest to largest.)
1. 4 answers
2. asked by darren
3. 1,571 views
You and your friend are both knitting scarves for charity. You knit 8 rows each minute and already have knitted 10 rows.Your
1. 2 answers
2. asked by JOY
3. 1,562 views
The coefficient of static friction between the 3.0 kg crate and the 31° incline shown below is 0.300. What is the magnitude of
1. 2 answers
2. asked by sammy
3. 1,468 views
Calculate the energy, in joules required to ionize a hydrogen atom when its electron is initially in the n=2 energy level.
1. 1 answer
2. asked by Anonymous
3. 1,442 views
An even function f has a vertical asymptote at x = 3 and a maximum at x = 0. Which of the following could be f?a.
1. 1 answer
2. asked by HC
3. 1,376 views
The lump sum payment surivorss receive from social security to hep pay funeral and burial expenses is :A. $255 B.$785 C.$1,000
1. 7 answers
2. asked by Ciara
3. 1,331 views
If 20.0 grams of propane are burned with 50.0 grams of oxygen:What mass of CO₂ is produced? What mass of water is produced?
1. 1 answer
2. asked by Mom
3. 1,326 views
A balloon weighing 80 kg has a capacity of 1200 m3. If it is filled with helium, how great a payload can it support? The density
1. 0 answers
2. asked by Hannah
3. 1,322 views
Consider the following chemical reaction.2H2O(l) -->2H2(g)+O2(g) What mass of H2O is required to form 1.6 L of O2 at a
1. 1 answer
2. asked by JULIE
3. 1,298 views
Can anyone tell me the styles of the Prehistoric Art Period, Art of ancient near east, art of ancient aegean, and ancient
1. 1 answer
2. asked by Rebecca
3. 1,213 views
objects of masses m1=4 kg and m2=9kg are connected by a light string that passes over a frictionless pulley. the object m1 is
1. 0 answers
2. asked by peter
3. 1,208 views
An amusement park ride called the Rotor consists of a room in the shape of a vertical cylinder (2.10 m in radius) which, once
1. 1 answer
2. asked by Kellie
3. 1,167 views
A 1.5-L container of liquid nitrogen is kept in a closet measuring 1.3 m by 1.3 m by 1.8 m.Assuming that the container is
1. 0 answers
2. asked by JULIE
3. 1,160 views
line MN is perpendicular to opIf the coordinates of M,N and O are (2,4), (-5,-8) , (-6,2) respectively, find the equation for
1. 2 answers
2. asked by sara
3. 1,155 views
What are the wavelengths, in nanometers, of the bright lines of the hydrogen emission spectrum corresponding to the transition:
1. 2 answers
2. asked by Anonymous
3. 1,142 views
Jackie mows a strip of uniform width around her 25 m by 15 m rectangular lawn and leaves a patch of lawn that is 60 percent of
1. 1 answer
2. asked by Kestrel
3. 1,133 views
What is the best reason to omit the reason for the refusal in a negative message?A. The reader may not think of the reason. B.
1. 5 answers
2. asked by Diana
3. 1,130 views
Use the compound interest formula A=P(1+r)^t and the given information to solve for r.A=9,000,000 P=80,000 t=40 I have done this
1. 2 answers
2. asked by beth
3. 1,079 views
The hydrogen atomic emission spectrum includes a UV line with a wavelength of 92.3 nm.Is this line associated with a transition
1. 0 answers
2. asked by Anonymous
3. 1,071 views
Ms. Sue can you please help me with this assignment? I would really appreciate it.Final Project: Mitigation Strategies and
1. 1 answer
2. asked by Anonymous
3. 1,062 views
Please do not post any more insurance questions in this forum. I don't believe they are 9th grade questions. They look more like
1. 2 answers
2. asked by Ms. Sue
3. 1,047 views
WHAT ARE TWO LEVELS OF BIODIVERSITY THAT WE FIND IN AN ECOSYSTEM?
1. 1 answer
2. asked by VICTORIA
3. 1,043 views
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257
1. 0 answers
2. asked by samantha(very important)
3. 1,039 views
what is the actus reus and mens rea in the three little pigs?
1. 3 answers
2. asked by Rebecca
3. 1,034 views
A loaded penguin sled weighing 75 N rests on a plane inclined at angle θ = 24° to the horizontal (Fig. 6-28). Between the sled
1. 3 answers
2. asked by Taylor
3. 1,013 views
Rank the following solutions in order of increasing acidity.1 M phenol 1 M boric acid 1 M cyanic acid 1 M formic acid 1 M
1. 1 answer
2. asked by Neha
3. 1,002 views
Write a 150- to 200-word paragraph to explain the importance of purpose, audience, tone, and content in academic writing. Use
1. 2 answers
2. asked by KIm
3. 996 views
As a car rounds the top of a hill at a speed of 29.03 m/s, it very briefly loses contact with the pavement. This section of the
1. 0 answers
2. asked by Marion
3. 993 views
A gas mixture with a total pressure of 745 mmHg contains each of the following gases at the indicated partial pressures: CO2,
1. 0 answers
2. asked by JULIE
3. 992 views
The trail is 2989 miles long. It begins in City A and ends in City B. Manfred has hiked 2/7 of the trail before. How many miles
1. 3 answers
2. asked by Ashley
3. 989 views
The surface area S (in square centimeters) of a large dogcan be approximated by the model S = 11.2m^2/3 where m is the mass (in
1. 1 answer
2. asked by jay
3. 978 views
Assignment GuidelinesPerform a two-tailed hypothesis test using the steps outlined in the assignment description. In a Word
1. 1 answer
2. asked by Truth
3. 972 views
A rectangular tank measures 60cm by 40cm by 30cm. It is half filled with water. Water is added to the tank at a rate of 13litres
1. 3 answers
2. asked by joi
3. 969 views
write ionic equation for :potassium carbonate and sodium sulfate sulfuric acid and strontium chloride potassium phosphate and
1. 0 answers
2. asked by ceezale
3. 960 views
a sequence begins -4,1,6,11find the rule that generates the sequence. Then give the 5oth term is the sequence. What type of
1. 1 answer
2. asked by manal
3. 956 views
If 40.0 g of water at 70 degrees C is mixed with 40.0 g of ethanol at 10.0 degrees C, what is the final temperature of the
1. 1 answer
2. asked by TheQuestion
3. 933 views
A store sells pens and note pads in packages. The price of a package of 8 pens and 3 notepads is 4.25. The price of a package of
1. 0 answers
2. asked by JOY
3. 927 views
The second term of a geometric progression is 12 more than the first term given that the common the ratio is half of the first
1. 4 answers
2. asked by Anonymous
3. 925 views
A concept map was to be created on acids and bases. The concept terms that were given to use were:aqueous
1. 2 answers
2. asked by Hannah
3. 923 views
If there is no conflict resolution in place, a career minded person must learn effective ways of resolving conflict in the
1. 3 answers
2. asked by Sharon
3. 920 views
Walking by a pond, you find a rope attached to a tree limb 5.1 m off the ground. You decide to use the rope to swing out over
1. 0 answers
2. asked by Anonymous
3. 919 views
which of the following is NOT a question you need to answer to choose a persuasive strategy?A. What do you want readers to do.
1. 3 answers
2. asked by Sheliah
3. 919 views
Determine whether the following statement makes sense or does not make sense, and explain your reasoning:When I'm trying to
1. 1 answer
2. asked by Abby
3. 916 views
the activity series of metals is:Au < Ag < Cu < Sn < Cd < Zn < Al < Mg < Na < Cs which reaction below occutrs spontaneously
1. 0 answers
2. asked by Dani
3. 903 views
An Asin Parent may not emulate the early childhod teacher's practice of praising her son for his assomplishments because: A.
1. 1 answer
2. asked by Daisy
3. 867 views
A 1.5-L container of liquid nitrogen is kept in a closet measuring 1.3 m by 1.3 m by 1.8 m.Assuming that the container is
1. 0 answers
2. asked by samantha(very important)
3. 855 views
An isosceles triangle has a base of 9.8 units long. If the congruent side lengths have measures to the first decimal place, what
1. 1 answer
2. asked by Billy
3. 849 views
0.150 L of 0.490 M H2SO4 is mixed with 0.100 L of 0.250 M KOH. What concentration of sulfuric acid remains after neutralization?
1. 1 answer
2. asked by Harley
3. 845 views
As a rule of thumb, the power P (in horsepower)that a ship needs can be modeled by P = d^2/3 • s^3 / c where d is the ship’s
1. 1 answer
2. asked by jay
3. 806 views
A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.40 m. At the lowest point of its motion the tension in the
1. 0 answers
2. asked by Lilly
3. 800 views
If 16.3 kilograms of Al2O3(s), 60.4 kilograms of NaOH(l), and 60.4 kilograms of HF(g) react completely, how many kilograms of
1. 1 answer
2. asked by Harley
3. 797 views
An 85 cm long pendulum with a 0.80 kg bob is released from rest at an initial angle of θ0 with the vertical. At the bottom of
1. 2 answers
2. asked by jack
3. 794 views
If 20.0 grams of propane are burned with 50.0 grams of oxygen:What mass of CO₂ is produced? What mass of water is produced?
1. 3 answers
2. asked by Mom
3. 790 views
A factory has two machines that produce bolts. Machine I produces 80% of the daily output of bolts, and 9% of its bolts are
1. 2 answers
2. asked by Anonymous
3. 784 views
A gas mixture with a total pressure of 745mmHg contains each of the following gases at the indicated partial pressures: CO2, 257
1. 0 answers
2. asked by JULIE
3. 781 views
You are writing to a reader who favors a different solution than the one you recommended. Which of the following is MOST likely
1. 7 answers
2. asked by Sheliah
3. 780 views
Is 1 greater than or less than negative 1?
1. 2 answers
2. asked by Dani
3. 765 views
1. Molarity is to moles of solute over liters of solution as molalityis to A. molar concentration over molal concentration. B.
1. 3 answers
2. asked by Anonymous
3. 765 views
How do i solve for this identity.....cos2theta=2-sec^2theta/sec^2theta
1. 0 answers
2. asked by Gregor
3. 761 views
A)Two identical resistors are connected in parallel across a 30-V battery, which supplies them with a total power of 7.0 W.
1. 0 answers
2. asked by Kristi
3. 759 views
A person standing at the edge of a seasidecliﬀ kicks a stone over the edge with a speed of 12 m/s. The cliﬀ is 41 m above
1. 4 answers
2. asked by norma
3. 744 views
Good day to you.How can I approach this math problem. "To save for a child's education, the Petersens deposited $2500 into an
1. 0 answers
2. asked by Cliff
3. 740 views
A bridge is designed with cables that connect two towers that rises above a roadway. Each cable is modeled by the function,
1. 0 answers
2. asked by Luke
3. 722 views
An employee has two hourly wage options for positions in a large corporation. One position pays $11.00 plus additional unit rate
1. 2 answers
2. asked by Christina
3. 722 views
I am writing an APUSH DBQ and I have what I think is a pretty winning thesis but I am having problems coming up with a good,
1. 0 answers
2. asked by Tay
3. 714 views
3. The solubility of BaSO4 at 25C is 9.04 mg/L. Based on this, how many grams and moles of BaSO4 remained dissolved in the
1. 1 answer
2. asked by joan
3. 712 views
Find the payment necessary to amortize a 4% loan of $900.00 compounded quarterly , with 11 quarterly payments?
1. 0 answers
2. asked by barb
3. 710 views
could someone please edit my biography on Gaspard Ulliel?Gaspard Ulliel est né à 25 Novembre, 1984 à Boulogne-Billiancourt,
1. 1 answer
2. asked by Rebecca
3. 706 views
An experiment shows that a 114 mL gas sample has a mass of 0.168 g at a pressure of 697mmHg and a temperature of 30 C.What is
1. 2 answers
2. asked by JULIE
3. 705 views

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