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Questions and answers by visitors named
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, page 2
Questions (1,432)
Convert 322 degrees to radians
1 answer
409 views
What is the 9th term -1/18 1/6 -1/2
2 answers
468 views
(1/6)to the power of 3x = 36 to the power of 2-x
3 answers
282 views
use dimensional analysis to find how many moles of nitrate ions are in 40.0 mL of a 0.75 M aqueous solution of aluminum nitrate
1 answer
403 views
(0.75 moles Al(NO3)3/L Al(NO3)3) x 0.040 L Al(NO3)3 = ??moles Al(NO3)3
I am unsure how to find the factor to convert moles
5 answers
568 views
use the intermediate value theorem to determine whether there is a zero
f(x) = -3^3 - 6x^2 + 10x + 9 ; [-1,0]
1 answer
373 views
find the bounds on the real zeros?????
f(x) = x^5 - 5x^4 +8x + 2
1 answer
325 views
solve in real number system
x^3 + 5x^2 - 12x = 14 =0
1 answer
316 views
given points (0,0) (0,5) vertical asymptote of (-1,1) and horiz (2,1) how do I find the equation??????
1 answer
326 views
use intermediate value theorem to show f(x) has a zero
f(x)= x^5 - 4x^4- 7x^2 - 6x; [-0.7, -0.6]
1 answer
265 views
use intermediate value theorem to show f(x) has a zero
f(x)= x^5 - 4x^4- 7x^2 - 6x; [-0.7, -0.6]
1 answer
323 views
Keno is a casino game in which the player has a card with the numbers 1 through 80 on it. The player selects a set of k numbers
4 answers
1,374 views
what does the a stand for in Pa^t
what does the r stand for in Pe^rt how are they related?
1 answer
336 views
How would you label sting in "Ouch, that bee sting hurts."
1 answer
413 views
The perimeter of a triangle is 48 centimeters. The longest side is 2 centimeters less than the longest side. Find the lengths of
1 answer
402 views
Write the unstressed syllable beside each word
worship ship pilgrim grim repair re distance tance carrot rot entry try destroy
3 answers
699 views
Calculate the temperature (in ºC) to which silver ore, Ag2O, must be heated to spontaneously decompose the ore to oxygen gas
2 answers
600 views
Explain in writting how to divide .12 by 8. (without using fractions) fifth grade
1 answer
418 views
Calculate the temperature (in ºC) to which silver ore, Ag2O, must be heated to spontaneously decompose the ore to oxygen gas
6 answers
1,175 views
Calculate the E°cell for the following voltaic cell (use the standard electrode potentials given on page 829 of the textbook,
2 answers
566 views
The standard molar enthalpy of fusion and the standard molar enthalpy of vaporization of benzene are 10.9 kJ/mol and 31.0
4 answers
1,158 views
Calculate ΔG at 25 ºC for a reaction in which Ca2+(aq) combines with CO32–(aq) to form a precipitate of CaCO3(s) if the
2 answers
711 views
In Fig. 10-28, wheel A of radius rA is coupled by belt B to wheel C of radius rC. The angular speed of wheel A is increased from
3 answers
1,586 views
find s given that v= 20, a= 10, u= 10 and v squared= u squared =2*a*s
1 answer
239 views
In Fig. 11-35, a solid brass ball of mass m will roll smoothly along a loop-the-loop track when released from rest along the
3 answers
1,923 views
In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Suppose the yo-yo was 153 kg, and it consisted of two
4 answers
2,217 views
For a test of Ho: p = 0.5, the z test statistic equals 1.52. Find the p-value for Ha: p > 0.5.
4 answers
2,030 views
A solid object can be deformed in three fundamental ways. A roof is held up by support columns inside the building. The
2 answers
816 views
The reaction of quicklime (CaO) with sulfur dioxide (SO2) is an important reaction for reducing SO2 emissions from coal-fired
2 answers
983 views
Indicate which of the following elements do not exist in nature in the elemental state (that is, they only exist in the combined
1 answer
444 views
A 500-mL aqueous solution of NaCl was electrolyzed for 15.0 minutes, producing Cl2 gas at the anode. If the pH of the final
2 answers
997 views
Which of the following oxides is the most acidic?
A. Al2O3 B. P4O10 C. SO3 D. MgO E. SiO2
3 answers
1,905 views
A 500-mL aqueous solution of NaCl was electrolyzed for 15.0 minutes, producing Cl2 gas at the anode. If the pH of the final
3 answers
469 views
In Fig. 13-25, three particles are fixed in place. The mass of B is greater than the mass of C. Can a fourth particle (particle
3 answers
2,794 views
How many liters of chlorine gas at 1.00 atm and 20ºC will be required to oxidize 167 grams of bromide ions to molecular
3 answers
657 views
How many liters of chlorine gas at 1.00 atm and 20ºC will be required to oxidize 167 grams of bromide ions to molecular
1 answer
439 views
Given: available material= 1200cm^2
Box w/ square base & open top Find: Largest possible value of the box Can anyone give me a
1 answer
488 views
You have 27 tuning forks that oscillate at close but different frequencies. What are the (a) maximum and (b) minimum number of
2 answers
1,050 views
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that
2 answers
638 views
An airplane flying at 82km/hr at 30 degrees east of north encounters a 40km/hr wind due west. What is the speed of the plane
2 answers
547 views
Two balls are involved in a completely inelastic collision. The first ball has a mass of 0.25 kg and an initial velocity of 9.27
3 answers
527 views
Two objects A and B are involved in a totally elastic collision The mass of A is 8.8 kg and the mass of B is 0.5 kg. The
5 answers
462 views
A 0.3 kg ball strikes a wall head on and then rebounds straight back. The initial speed was 10.0 m/s and the speed after it
2 answers
1,115 views
Given 1.7 g of hydrobromic acid (48%) calculate the number of mL.
(MW HBr: 80.91 g/mol, density: 1.49 g/mL)
1 answer
495 views
A student found that her mixture was 15 percent NH4cl 20 percent NaCl and 75 percent Sio2 Assuming her calculations are correct
4 answers
4,190 views
How many moles of ammonium ions are in 8.794g of ammonium carbonate?
I've tried this multiple times but some reason, I can't
1 answer
332 views
Octane has a density of 0.692 at 20degree C . How many grams of O2 are required to burn 17.0gal of C8H18 ?
Step-by-step
4 answers
5,224 views
The fizz produced when an Alka-Seltzer® tablet is dissolved in water is due to the reaction between sodium bicarbonate (NaHCO3)
4 answers
3,274 views
What is the net ionic equation of reaction of MgCl2 with NaOH?
I got the equation and then balanced it and then omitted the
3 answers
17,821 views
What is Ghost of selection past?
1 answer
291 views
World energy supplies are often measured in the unit of quadrillion British thermal units (10^12 btu), generally called a
3 answers
748 views
World energy supplies are often measured in the unit of quadrillion British thermal units (10^12 btu), generally called a
2 answers
517 views
Is Amborella considered a magnoliid, monocot, or eudicot and why?
1 answer
309 views
How would you differentiate a monophyletic from a polyphyletic and paraphyletic? I know the definition but can someone provide
1 answer
971 views
A mixture of 0.166 moles of C is reacted with 0.117 moles of O2 in a sealed, 10 L vessel at 500 K, producing a mixture of CO and
5 answers
710 views
In a study 42% of adults questioned reported that their health was excellent. A researcher wishes to study the health people
3 answers
1,682 views
An 8-ounce weight stretches a spring 10 cm. How much weight will stretch the spring 15 cm?
4 answers
2,508 views
The distance between two towns on a map varies directly with the actual distance between the towns. Seven and a half inches on
3 answers
1,358 views
Why is energy released in order to react two atoms to form a compound?
For instance the reaction between sodium metal and
3 answers
484 views
When you scuba dive, the added pressure due to the water varies directly with your depth. At 20 feet, the added pressure is
1 answer
644 views
In a lightning storm, the number of seconds between the flash and the bang varies directly with the number of miles you are from
3 answers
610 views
Can someone help draw/explain the Lewis Dot Structure for OPBr3. I've tried different things, but none of them seem to work.
3 answers
2,015 views
Part A:
A cardinal (Richmondena cardinalis) of mass 4.50×10^−2 kg and a baseball of mass 0.142 kg have the same kinetic
1 answer
494 views
A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?
1 answer
639 views
A 17kg child slides down a 2.7m -high playground slide. She starts from rest, and her speed at the bottom is 1.8 m/s. What is
1 answer
723 views
Using the five themes of geography, which theme best illustrates each statement: Location, character of place, human-environment
6 answers
1,948 views
I must combine the following sentences in the most effective way. Is my answer correct?
1. Walter loved animals. 2. He especially
2 answers
930 views
Question: How can I rewrite this sentence to maintain the 3rd person academic tone? Is my answer correct?
1. You have probably
1 answer
493 views
Question: How can I rewrite this sentence to maintain the 3rd person academic tone? Is my answer correct?
1. You have probably
1 answer
472 views
I must improve the organization of these four sentences of a paragraph in the most effective way. Is my answer correct?
Sentences
2 answers
479 views
I must combine the following sentences in the most effective way. Is my answer correct?
Sentences: 1. He didn't cover his vehicle
2 answers
774 views
The first-order rate constant for the decomposition of N2O5, 2N2O5(g) --> 4NO2(g) + O2(g), at 70 degrees C is 6.82 x 10^-3 s^-1.
4 answers
1,396 views
Find the intergral of (1+x)/sqrt(3-x^2)
1 answer
336 views
Find the intergral of (1+x)/sqrt(3-x^2)
1 answer
379 views
What is the function rule for
2,30 4,15 6,10 10,6 12,5 15,4 30,2
1 answer
378 views
if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be produced at 15 degrees
2 answers
1,105 views
if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be produced at 15 degrees
2 answers
671 views
How do you solve this: if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be
5 answers
399 views
How do you solve this: if 24.0 L of O2 burns completely a sample of carbon disulfide, how many grams of sulfur dioxide will be
1 answer
382 views
If 24.0 L of O2 burns completely a sample of carbon disulfide, how many moles of sulfur dioxide (SO2) will be produced at 15
2 answers
949 views
If 24.0 L of O2 burns completely a sample of carbon disulfide, how many moles of sulfur dioxide (SO2) will be produced at 15
1 answer
438 views
If 24.0 L of O2 burns completely a sample of carbon disulfide, how many moles of sulfur dioxide (SO2) will be produced at 15
1 answer
458 views
Math estimate quotient 6 1/3 divided by 3 1/7
2 answers
906 views
If your equation of the line for you SAM analysis is y=1x+0.3980, what is the concentration of Mg in ppm in your unknown
1 answer
249 views
If your equation of the line for you SAM analysis is y=1x+0.3436, what is the concentration of MgO in W/w% in your unknown with
1 answer
361 views
1. Which of the following is correct in regard to the use of formal English?
A. Formal English is used more frequently in
7 answers
948 views
Graph each liner equation and locate the x and y intercepts
y/2-3x/5=1
1 answer
266 views
Graph each liner equation and locate the x and y intercepts
y/2-3x/5=1
1 answer
328 views
Find the slope-intercept equation of the line that satisfies the given conditions. Then graph the line.
Contains points P=(
2 answers
623 views
Find the standard equation of an ellipse with the given characteristics and sketch the graph.
Vertices at (0,-5), and (0,5); Foci
2 answers
973 views
A commuter backs her car out of her garage with an acceleration of 1.6 m/s2. How long does it take her to reach a speed of 2.3
2 answers
583 views
In the early 1900s, Alfred Wegener noticed that some of the Earth's continents looked like they might fit together like a jigsaw
11 answers
2,060 views
Consider 51.5 mL of a solution of weak acid HA (Ka = 1.00 10-6), which has a pH of 4.210. What volume of water must be added to
1 answer
405 views
Richard Simons is selling his house. He has a choice of taking $125,000 today or $135,000 in 6 months. If he takes the money
3 answers
790 views
What volume of each solution contains 0.220mol of NaI?
a.) 0.142M NaI b.) 0.902M NaI c.) 1.61M NaI
3 answers
982 views
The length of Joe's rectangular garden is 1 meter less than its width and its area is 120m^2. Find the dimensions of the garden.
4 answers
624 views
A 66.2 kg person sits on the 5.3 kg sled (slope is on an angle, angle not given). It is to be pulled across the snow with a
2 answers
508 views
An electric lawn mower has a resistance of 160 ohms and draws 15A. What is the cost of operating the lawn mower for 30 minutes
1 answer
459 views
what is the angle of rotation about D when the measure of the acute angle between lines m and n is 36 degrees
1 answer
507 views
Find two pairs of numbers with 10 as their least common multiple
4 answers
1,919 views
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