Questions LLC
Login
or
Sign Up
Ask a New Question
Brittany
Questions and answers by
Brittany
, page 4
Questions (497)
Calculate the amount of heat transferred when 21.0 of CH3OH(g) is decomposed by this reaction at constant pressure.
7 answers
2,931 views
A town has a population of 32,000 in the year 2002; 35,200 in the year 2003; 38,720 in the year 2004; and 42,592 in the year
3 answers
1,434 views
A solution is prepared by mixing 499 mL of 0.19 M Tris·Base and 592 mL of 0.37 M Tris·Acid. What is the pH of this solution?
2 answers
489 views
How do I do a question like this please help and explain it!!
Calculate the pH of a buffer solution that contains 0.22 M benzoic
2 answers
880 views
Calculate the enthalpy change for converting 10.0g of ice at -25 degrees Celsius to water at 80 degrees Celsius. The specific
3 answers
2,356 views
A solution of ammonia and water contains 1.00×1025 water molecules and 5.50×1024 ammonia molecules. How many total hydrogen
4 answers
593 views
Given the equation 2C8H18 + 25O2 = 16 CO2 + 18H2O: The combustion of octane produces carbon dioxide and water. If you start with
2 answers
830 views
A voltaic cell is constructed that uses the following half-cell reactions.
Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is
2 answers
738 views
A voltaic cell is constructed that uses the following half-cell reactions.
Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is
1 answer
753 views
Two parallel wires conduct equal currents in the same direction. (a) At a point in the plane of the wires midway between them,
1 answer
423 views
Children below the 30th percent are in need of special assistance assistance what raw score makes the cut off score for these
6 answers
470 views
if sine theta=.3416 and theta is in quadrant I what is cos theta/2? Using double angle identities.
2 answers
976 views
Use the properties of logarithms to condense the expression
1/3[ln(x - 6)- 4 ln y - 2 ln z]
2 answers
507 views
How would I show my work for:
3-2(3)+2(4)+1
1 answer
252 views
Whats the difference between creating a z score from a single score and creating one fron a sample mean?
3 answers
618 views
A Student Performing a lab weighed a 1.0993g sample, containing an unknown KHP, which required 18.06mL of 0.1879M NAOH to reach
2 answers
1,061 views
A 2.5 L volume of sodium hydroxide solution was prepared. The titrant was standarized against primary standard oxalic acid
2 answers
548 views
What were the causes of the War of 1812? Where did Republicans and Federalists stand on declaring and then fighting the war?
2 answers
670 views
I need help with the Lewis Dot Structure. I'm so lost. The problems I have and need help with are 1) H2NCH3 2) C3H6 3)NO2-ion 4)
2 answers
684 views
Find the number z (± 0.01) such that the proportion of observations that are less than z in a standard Normal distribution is
3 answers
478 views
Calculate the amount of 8% acetic acid needed to combine with water to make 600 ml of 3.5% acetic acid.
1 answer
411 views
Calculate the percentage strength of hydrocortisone if you combine 30 g of 1%, 45 g of 0.5%, and 15 g of 2%. Round to the
1 answer
385 views
What is the percentage strength of tretinoin gel when you combine 15 g of 0.025% and 30 g of 0.01%?
3 answers
344 views
What is the percentage strength of tretinoin gel when you combine 15 g of 0.025% and 30 g of 0.01%?
1 answer
313 views
Calculate the percentage strength of hydrocortisone if you combine 30 g of 1%, 45 g of 0.5%, and 15 g of 2%. Round to the
3 answers
401 views
Androgel is available in 1% strength. A provider prescribed it for a patient but would like to minimize side effects by starting
1 answer
368 views
When the following hypotheses are being tested at a level of significance of
aH0: m 100 Ha: m < 100 the null hypothesis will be
2 answers
1,070 views
If you walk for 1.66min at a speed of 1.22m/s and then run for 1.66min at 3.05m/s along a straight track, what is the average
2 answers
815 views
An important measure of the performance of a locomotive is its "adhesion," which is the locomotive's pulling force as a multiple
2 answers
866 views
An important measure of the performance of a locomotive is its "adhesion," which is the locomotive's pulling force as a multiple
2 answers
611 views
Given letters gb and gf how do you write a mathematical to compare their measures?
1 answer
332 views
Assume that a cell culture has a density of 108 cells/mL. You transfer 20 microliters (20 L) of this culture onto a
1 answer
502 views
I need an example of connotation from the Star Wars series in the form of a quote.
1 answer
390 views
What are calculations entered into a spreadsheet called?
Formulas? Or Values? I'm thinking its formulas but Values talks about
1 answer
1,004 views
I had to write a paragraph about a personal experience of mine with no passive verbs. When I submitted mine my teacher told me
2 answers
542 views
Most early childhood professionals children’s agree that the terms inclusion and mainstreaming:
A. Both refer to exceptional
1 answer
476 views
Special educational services for young children with disabilities:
a. Cannot be enforced through laws. b. depend on parent
5 answers
379 views
The amount of energy released by burning a fuel source, measured in energy per mass, is called the fuel value. If all the energy
2 answers
713 views
Before determining the amount of sodium carbonate in a sample by titration with standard hydrochloric avid the anaylst decide to
1 answer
1,001 views
Determine the absolute and percent relative uncertainty expressing the result in the correct number of significant digits
a.) 6.2
1 answer
1,130 views
the warning Dr.Faustus teaches is?
A-the devil is evil B-do not wish for more than heavenly power permits C-the end will justify
2 answers
945 views
An expanded structural formula shows all the atoms of the molecule and all the bonds between the atoms in the molecule.
Draw the
3 answers
1,456 views
Compare the environment for toddlers with one suitable for infants. How are the areas similar? How are they different?
2 answers
542 views
Compare the environment for toddlers with one suitable for infants. How are the areas similar? How are they different?
1 answer
396 views
Can anyone answer this question?
Compare the environment for toddlers with one suitable for infants. How are the areas similar?
2 answers
748 views
What items would you first look for to determine whether lead is present in the environment where children are present?
1 answer
354 views
How does poverty relate to a child's risk for inadequate health and well-being?
3 answers
526 views
Methanol (CH4O) is converted to bromomethane (CH3Br) as follows:
CH4O + HBr --> CH3Br + H2O If 12.23 g of bromomethane are
3 answers
2,268 views
Which one of these samples contains the smallest number of molecules?
a. 1.0 L of H2 at STP (0°C and 1atm) d. 1.0 L of N2 at
4 answers
3,288 views
Iron(III) oxide reacts with carbon monoxide gas to form solid iron metal and carbon dioxide gas:
Fe2O3 + 3 CO --> 2 Fe + 3 CO2 If
3 answers
2,462 views
In an experiment, 25.0 mL of a gas with a pressure of 1.00 atm is contained in a balloon at 25.0°C. The balloon is then cooled
2 answers
1,142 views
How many moles of propane are contained in a 5.00 L tank at 450 torr and 25°C?
4 answers
1,583 views
Which of the following reactions will result in a reduced total pressure?
a. CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) c. 2HI(g) →
3 answers
1,677 views
The density of an unknown gas is 1.72 g/L at 750.0 torr and 30.0°C. Which of the following could be the unknown gas?
a. CS2 b.
3 answers
1,987 views
What is the root-mean-square speed of N2O at 25°C?
2 answers
750 views
Which of the following gases will effuse through a hole in a balloon fastest?
a.Kr b.NO c.N2O d.NO2 e.ArNO2
4 answers
2,976 views
The flame in a torch used to cut metal is produced by burning acetylene(C2H2) in pure oxygen. Assuming the combustion of 1 mole
3 answers
4,694 views
Calculate the final temperature of a mixture of 200.0g of ice initially at -16.5 Celsius and 406.0g of water initially at 84.5
4 answers
1,160 views
Pentane is a small liquid hydrocarbon, between propane and gasoline in size C5H12. The density of pentane is 0.626g/ml and its
1 answer
822 views
51.34 g of water at 81.5 oC is added to a calorimeter that contains 52.13 g of water at 40.7 oC. If the final temperature of the
2 answers
860 views
A total of 504 tickets were sold for the school play. They were either adult tickets or student tickets. The number of student
5 answers
2,851 views
find all the real zeros and multiplicity of
f(x)=x^4-68x^2+256
1 answer
378 views
An object is placed 8 cm in front of a convex lens of focal length 6 cm. Find the image location by drawing a ray tracing
3 answers
1,660 views
A 50kg box is sitting on your front porch. The coefficient of sliding friction between the box and floor is .4. You are trying
2 answers
542 views
Identify the abbreviations in this sentence.
When they raise me to a high position, then ill get a raise.
3 answers
472 views
Four ice cubes at exactly 0 ^\circ {\rm{C}} having a total mass of 55.0g are combined with 110g of water at 77^\circ C in an
2 answers
1,200 views
An X-ray beam with = 151 incident on the surface of a crystal produced a maximum reflection at an angle of = 28.2.
Part A
3 answers
437 views
If a 60 kg meteor falls to earth from a great distance. How much gravitational potential energy does it lose? (the energy PE is
1 answer
449 views
If student A scored 42 on a test of reading and the test had a mean of 52 and a standard deviation of 8, what percentage of test
1 answer
718 views
Mr. quark drove his car 314 miles in 6.5 hours. He used 12.7 gallons of gas. Find these rates
4 answers
787 views
Mr. quark drove his car 314 miles in 6.5 hours. He used 12.7 gallons of gas. Find these rates.
gallons per mile
2 answers
504 views
A basketball star earned $2,000,000 last year. He played in 64 games for an average of 42 minutes per game. Find these rates
doll
2 answers
551 views
A factory produces bicycles 6 motorcycles in 9 hours. Write a proportion and solve it to find how many hours it takes to produce
2 answers
575 views
A marathon runner ran the first 5 mi. in 32.5 min. If she continues running at this pace, how long will it take her to run the
3 answers
959 views
A current of 4.6 A is measured through a 7.8 ohms resistor for 1.75 minutes. How much heat is generated by the resistor?
1 answer
325 views
A current of 4.6 A is measured through a 7.8 ohms resistor for 1.75 minutes. How much heat is generated by the resistor?
1 answer
351 views
a 0.67 kg rubber ball has a speed of 2.2 m/s at point a and kinetic energy 7.1 J at point B find the total work done on the ball
2 answers
512 views
a 0.67 kg rubber ball has a speed of 2.2 m/s at point a and kinetic energy 7.1 J at point B find the total work done on the ball
2 answers
654 views
At 0*C a 1.0-L flask contains 5.0 x 10^-2 mol N2, 1.5 x 10^2 mg O2, and 5.0 x 10^21 molecules of NH3. What is the partial
2 answers
935 views
How much heat (kcal)is needed to melt 14 ice cubes? Each cube is at 0c and has a mass of 28grams.
2 answers
771 views
A pole has a shadow that is 5 feet long. Jackie's shadow is 3 feet long, and she is 6 feet tall. How tall is the ladder?
4 answers
537 views
A ladder has a shadow 3.5 meters
long. Marlowe’s shadow is .75 meters long. If Marlowe is 1.5 meters tall, how tall is the
1 answer
306 views
An architect is drawing a scale model of a new mall. The real mall will be 1800 feet long. The scale the architect is using is 1
3 answers
508 views
What is the value of x
x/60 = 1/2/1/6
1 answer
243 views
Help please. Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will
6 answers
1,215 views
Help Please . Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will
5 answers
1,495 views
Three ships leave New York for France on the same day. The round trip takes the first ship 12 days, the second ship 16 days and
1 answer
456 views
Matt ate a total of 100 raisins over a five day period. Each day he ate six more raisins than the previous day. How many did he
1 answer
393 views
An international agreement that aims to reduce carbon dioxide emissions and the presence of greenhouse gases. Countries that
3 answers
998 views
For a seesaw that 14 ft long, where should the fulcrum be placed to balance a 204 lbs adult and a 81.6 lbs child?
1 answer
543 views
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after
2 answers
598 views
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after
2 answers
822 views
*I have asked countless people to help me with this story problem and nobody seems to know how to do it! Please help!
Natalie
1 answer
506 views
Natalie performs a chemistry experiment where she records the temperature of an ongoing reaction. The solution is 93.5º C after
1 answer
664 views
Square root 18 + 3/square root 2
1 answer
797 views
Square root 18 + (3/square root 2)
4 answers
393 views
The functions f(θ) and g(θ) are sine functions, where f(0) = g(0) = 0.
The amplitude of f(θ) is twice the amplitude of g(θ).
2 answers
1,319 views
A pinhole camera has a small circular aperture of diameter D. Light from distant objects passes through the aperture into an
1 answer
1,233 views
Two cars lost in a blinding snowstorm are traveling across a large field, each thinking they are on the road, as shown in the
3 answers
1,068 views
An object whose mass is unknown is held by two rigid rods. The whole system is at rest. The angle between the vertical direction
1 answer
845 views
Pages
1
2
3
4
5