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Questions Asked on December 6, 2014

1. Which of the following passages from the text identifies a key event in the plot?A. "... I'll buy your unexpired time. I
1. 31 answers
2. asked by callie
3. 9,559 views
A spy in a speed boat is being chased down ariver by government officials in a faster craft. Just as the officials’ boat pulls
1. 2 answers
2. asked by sis
3. 5,458 views
The force required to stretch a spring varies directly with the amount the spring is stretched. A force of 29 pounds is needed
1. 1 answer
2. asked by Dave
3. 4,804 views
To find the height of a tree, Wyatt places a mirror so that he can see the top of the tree in the mirror. The mirror is 3 ft
1. 2 answers
2. asked by Anonymous
3. 3,915 views
Gaseous methane (CH4) reacts with gaseous oxygen gas (O2) to produce gaseous carbon dioxide (CO2) and gaseous water (H2o) . What
1. 1 answer
2. asked by Amy
3. 3,341 views
sodium hydroxide and carbonic acid net ionic equation
1. 2 answers
2. asked by Hayley
3. 2,882 views
1) The lowest tone to resonate in an open pipe of length L is 1600 Hz. What is the frequency of the lowest tone that will
1. 1 answer
2. asked by Kimberly
3. 2,743 views
Question #1Suppose that θ is an angle in standard position whose terminal side intersects the unit circle at −−2029,2129
1. 2 answers
2. asked by Kylee Smith
3. 2,702 views
Temperature is a measure of the amount of heat an object contains.T/F
1. 4 answers
2. asked by Rachel
3. 2,511 views
Determine the number of bonding electrons and the number of nonbonding electrons in the structure of SeCl2 and SiO2.
1. 2 answers
2. asked by LO
3. 2,355 views
Consider the following data.DeltaHf (Na2O (s))=-414kJ/mol Delta H sublimation(Na)=109 kJ/mol I.E. (Na)=495 kJ/mol Bond Energy
1. 2 answers
2. asked by Anon
3. 2,346 views
Dan works at a hardware store. The employee discount is determined by theformula d = 0.15 (c − 10 ). Use the inverse of this
1. 1 answer
2. asked by Anonymous
3. 2,307 views
If ammonia is manufactured at 356 K, is the reaction spontaneous, given that the enthalpy and entropy change for the reaction
1. 3 answers
2. asked by Morgan
3. 2,260 views
Ringer's solution, used in the treatment of burns and wounds, is prepared by dissolving 8.6 g of NaCl, 0.30 g of KCl, and 0.33 g
1. 1 answer
2. asked by Mike
3. 2,137 views
At a total atmospheric pressure of 1.00 atm, the partial pressure of CO2 in air is approximately 4.0×10−4 atm.If at 20 ∘C
1. 3 answers
2. asked by Mike
3. 2,095 views
Two artifacts in a museum display are hung from vertical walls by very light wires. Wire T1 is horizontal from the left wall and
1. 1 answer
2. asked by Brock
3. 2,091 views
Q. Tim's family was collecting aluminum cans to recycle. They found out that they would get two cents for every three cans they
1. 15 answers
2. asked by Phoebe
3. 2,061 views
The Arrhenius theory explains why ammonia, NH3, is basic, but the Bronsted-Lowry theory does not.True or False
1. 2 answers
2. asked by Meghan
3. 2,059 views
The number of protons in an anion must always be ________ the number of electrons.the same as We can’t tell. less than greater
1. 2 answers
2. asked by Rachel
3. 2,022 views
What is the Van't Hoff Factor ofMgSO4*7H2O? We're doing a colligative properties lab at my school where we dissolve various
1. 1 answer
2. asked by David
3. 1,973 views
I have four questions:1. The area of trapezoid ABCD is 60. One base is 4 units longer than the other, and the height of the
1. 9 answers
2. asked by jared
3. 1,972 views
each time old faithful in Yellowstone national park erupts, rangers can estimate the height of the geyser by comparing it to the
1. 3 answers
2. asked by Anonymous
3. 1,865 views
A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7)
1. 0 answers
2. asked by Barbara
3. 1,862 views
Most alcohols are very safe to ingest.True or False
1. 2 answers
2. asked by Sarah
3. 1,819 views
Flying with the wind, a plane traveled 570 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5
1. 1 answer
2. asked by Oshyanna
3. 1,767 views
a 33 kg lawnmower is pulled by a 100N force on flat ground. The handle makes a 10 degree angle with the ground. The coefficient
1. 3 answers
2. asked by Anonymous
3. 1,659 views
When an acid and a base react in a neutralization reaction, the products will be acidic.T/F
1. 1 answer
2. asked by Rachel
3. 1,552 views
a 25 kg ball is trown into that air.when thrown it is going 10 m/s .calculate how high it travel
1. 1 answer
2. asked by anshuman
3. 1,508 views
A painter needs to know the height of a building to estimate the amount of paint needed for the front side. When the building
1. 1 answer
2. asked by Anonymous
3. 1,502 views
use the elimination method to solve the system of equations. Choose the correct ordered pair.2x+4y=16 2x-4y=0 A.(4,2) B.(2,4)
1. 1 answer
2. asked by regan
3. 1,489 views
Q. As a project,the fifth grade students at Scott Elementary School collected newspaper to recycle. During the first week, they
1. 4 answers
2. asked by Phoebe
3. 1,440 views
Acettlene gas (C2H2) is used in welding. During one job, a welder burns 48.0 g of acetylene. Using a balanced equation for the
1. 1 answer
2. asked by Rose
3. 1,333 views
A metal oxide will form an acid when it is dissolved in water.T/F
1. 2 answers
2. asked by Rachel
3. 1,304 views
What is the freezing point of a solution that contains 21.1g of urea, CO(NH2)2, in 305mL water, H2O? Assume a density of water
1. 1 answer
2. asked by Jenn
3. 1,299 views
Can you check these?1. Olivia typed 2 pages in 15 minutes. Write an equation relating the number of minutes m to the number of
1. 8 answers
2. asked by Alexis
3. 1,288 views
Naturally occurring reactions of oxygen (O2) are always desirable.True or False
1. 2 answers
2. asked by Taylor
3. 1,230 views
Let ABCD be a parallelogram. Let M be the midpoint of AB and N be the midpoint of AD. Diagonal BD intersects CM and CN at P and
1. 1 answer
2. asked by kayla1
3. 1,108 views
As the number of carbons increases, the boiling point of alkanes decreaseTrue or False
1. 1 answer
2. asked by Sarah
3. 1,085 views
What is the product in scientific notation?(1.4x10^3)(2.5x10^-6) Please answer and explain how you got the answer.
1. 1 answer
2. asked by Sam
3. 1,062 views
10x+5y=500 What is the slope? Do I have to change it to slope intercept form first? Or is there a way to find slope with keeping
1. 4 answers
2. asked by Anonymous
3. 1,039 views
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose
1. 1 answer
2. asked by ada
3. 1,035 views
Oxygen gas may be prepared by decomposing hydrogen peroxide, h2o2, using manganese (IV) oxide catalyst: 2H2O2(liquid) ---->
1. 0 answers
2. asked by kai
3. 1,032 views
A horse draws a sled horizontally on snow at constant speed. The horse can produce a power of 1.095 hp. The coefficient of
1. 2 answers
2. asked by Breyonna Fawling
3. 1,028 views
A ship maneuvers to within 2.47×103 m of anisland’s 1.76 × 103 m high mountain peak and fires a projectile at an enemy ship
1. 0 answers
2. asked by sis
3. 1,023 views
Complete the Bronsted- Lowry reaction, placing each product by its appropriate label.HCO3^-+HNO2 (double arrows) need a spot for
1. 0 answers
2. asked by Allison
3. 996 views
All polymers made from polyethylene will have the same density.
1. 1 answer
2. asked by Anonymous
3. 989 views
potassium hydroxide and perchloric acid net ionic question
1. 0 answers
2. asked by Hayley
3. 982 views
Hi i had these questions wrong :/The North and South held different views toward slavery in 1850. What were they? a) The North
1. 3 answers
2. asked by Quilla.
3. 974 views
A cylinder 1.00 m tall with inside diameter 0.120 m is used to hold propane gas (molar mass 44.1 g/mol). It is initially filled
1. 0 answers
2. asked by Lan
3. 972 views
What was the significance of the Lincoln-Douglas debates?a) They brought together two outstanding speakers that were largely in
1. 3 answers
2. asked by Quilla.
3. 943 views
At 35°C, Kc = 1.6 X 10-5 M for the reaction 2NOCI(g) 2NO(g) + Cl2 (g)' Calculate theconcentrations of all species at
1. 0 answers
2. asked by airman
3. 939 views
Two forces are applied to a car in an effort to accelerate it, as shown below. The first force, F1 = 400 N, is applied at an
1. 1 answer
2. asked by Anonymous
3. 935 views
Sodium chloride has properties that are very similar to those of sodium.True or False
1. 3 answers
2. asked by Jessica
3. 903 views
What percent (by mass) of granulated sugar is fructose, and what percent of it is sucrose?Background: We are doing a colligative
1. 1 answer
2. asked by David
3. 898 views
Flying with the wind, a plane traveled 570 miles in 3 hours. Flying against the wind, the plane traveled the same distance in 5
1. 1 answer
2. asked by Barb
3. 896 views
A student uses a 2.00-m-long steel string with a diameter of 0.90 mm for a standing wave experiment. The tension on the string
1. 0 answers
2. asked by kassy
3. 896 views
When the following equation is balanced, what is the coefficient for Ta?H2 + Ta2O3 → Ta + H2O
1. 1 answer
2. asked by Taylor
3. 894 views
A pickling solution is prepared by dissolving 250g of NaCl in 4.0L of water.Calculate the osmolarity of the solution.
1. 1 answer
2. asked by Mike
3. 871 views
a 33 kg lawnmower is pulled by a 100N force on flat ground. The handle makes a 10 degree angle with the ground. The coefficient
1. 2 answers
2. asked by Anonymous
3. 866 views
A bag contains three green marbles, four blue marbles and two orange marbles. If a marble is picked at random than the
1. 1 answer
2. asked by chow
3. 847 views
A vertical cylindrical tank contains 1.80 mol of an ideal gas under a pressure of 1.00 atm at 20.0oC. The round part of the tank
1. 0 answers
2. asked by Lan
3. 827 views
The destructive power generated by an explosive mixture results from the rapid expansion of gaseous products.True or False
1. 2 answers
2. asked by Tammie
3. 827 views
Assume all temperatures to be exact, and neglect significant figures for small changes in dimension.A diver releases an air
1. 1 answer
2. asked by Rich
3. 788 views
The electric potential in a region is given by V(x,y,z) = -10.0x^2+ 20.0xyz + 6.0y^3 a) Find the electric field that produces
1. 1 answer
2. asked by LS
3. 788 views
A computer hard drive rotates at 5400 revolutions per minute. Starting from rest, what torque will get the hard drive up to that
1. 0 answers
2. asked by Devon
3. 784 views
The ΔH of the reaction below is -575.13 kJ. Is this reaction spontaneous?2ZnS + 3O2 + C → 2SO2 + 2Zn + CO2 A. It is not
1. 1 answer
2. asked by Morgan
3. 778 views
The United States consumes one-fifth of all the world's coffee, making it the largest consumer in the world. But few Americans
1. 2 answers
2. asked by Jenifer
3. 760 views
A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7)
1. 0 answers
2. asked by quintyn
3. 746 views
Find the interval on which f(x)=xe^-x is increasing.I got (1,infinity)..
1. 1 answer
2. asked by Anonymous
3. 745 views
A 0.480 kg, 37.5 cm long metal rod is sliding down two metal rails that are inclined 42 degrees to the horizontal. The rails are
1. 0 answers
2. asked by LS
3. 733 views
1)According to past record the average daily sales for a sporting goods store was $3456.00. After a new advertising campaign,
1. 0 answers
2. asked by Bobby
3. 726 views
The mass of an atom is distributed evenly throughout the atom.
1. 1 answer
2. asked by Meghan
3. 715 views
A medical researcher wanted to determine the effect of pH (a measure of alkalinity or acidity, with pure water having a pH of 7)
1. 0 answers
2. asked by Barb
3. 714 views
Estimate the value of this expression by rounding each number to the nearest unit.(1.63)(9.95)(2.46) Plesse help..
1. 7 answers
2. asked by daisy
3. 712 views
Baseball of 0.15 kg is thrown upward at an initial velocity of 35 m/s. tow second later a 20 g bullet is fired at 250 m/s into
1. 0 answers
2. asked by mohamed
3. 709 views
definite integral of (e^(8x))cosh(8x)dx from 0 to 1/16-I substitued the definition of cosh in, i.e. (e^(8x) + e^(-8x)/2 but i
1. 1 answer
2. asked by gregory
3. 703 views
The fuel efficiency for a certain midsize car is given by E(v)= -0.016v^2+1.408v+3.8, where E(v)is the fuel efficiency in miles
1. 2 answers
2. asked by Barb
3. 688 views
A small fast-food restaurant invests $4,000 to produce a new food item that will sell for $4.59. Each item can be produced for
1. 1 answer
2. asked by angie
3. 685 views
What mass of solid sodium acetate, NaCH3COO, must be added to 2.50 L of an aqueous solutionof 0.55 M acetic acid, CH3COOH, in
1. 0 answers
2. asked by airman
3. 679 views
What does the slope mean in a scenario
1. 1 answer
2. asked by Anonymous
3. 662 views
convert 32.9g of neon into moles
1. 2 answers
2. asked by Iestyn
3. 662 views
What is the osmolarity of a typical oral rehydration solution (ORS) for infants that contains 95mEq/LNa+ , 25mEq/LK+ ,
1. 1 answer
2. asked by Mike
3. 657 views
Find an equation of the parabola that has the indicated vertex and whose graph passes through the given pointVertex:2,-1
1. 1 answer
2. asked by Marie
3. 657 views
the half-life of a positron is very short. it reacts with an electron, and the masses of both are converted to two gamma-ray
1. 0 answers
2. asked by yannick lungu
3. 651 views
Baseball of 0.15 kg is thrown upward at an initial velocity of 35 m/s . tow seconds later a 20 g bullet is fired at 250 m/s into
1. 0 answers
2. asked by Ssn
3. 648 views
A sample of oxygen gas occupies a volume of 3.84 L at 269. K. What volume will the sample occupy at 486. K?
1. 1 answer
2. asked by Paula
3. 644 views
Find the equation of the line that contains the point (3, 2) and is parallel to the line 3x − 9y = 0.I know I solve for y and
1. 1 answer
2. asked by Erica
3. 639 views
How do I solve f(x)=x^3-6x^2+16x-96 using Descartes' Rule of Signs to find the number of positive and negative real roots, along
1. 1 answer
2. asked by Christian
3. 638 views
x intercept of y=30x+20???
1. 5 answers
2. asked by Anonymous
3. 627 views
type of element of elements of neon
1. 1 answer
2. asked by edu
3. 615 views
Which equation is the equation of a line that passes through (-10,3) and is perpendicular to y=5x-7?1- y=5x+53 2- y=-1/5x -7 3-
1. 1 answer
2. asked by Steve
3. 613 views
Excited state electrons lose energy when they move to the ground state.
1. 1 answer
2. asked by Sarah
3. 608 views
According to his prelaboratory theoretical yield calculations, a student's experiment should have produced 1.41 g of magnesium
1. 0 answers
2. asked by Teresa
3. 603 views
how can I use a scale of 1/2in.:15 ft to reproduce a scale drawing of a soccer field?
1. 1 answer
2. asked by Amanda
3. 602 views
What precipitates form when CuSO4 and H3PO4 added together?
1. 0 answers
2. asked by Manali
3. 598 views
what do encyclopedia consist of??i cant use any type of encyclopedia for my research so what would those be??
1. 1 answer
2. asked by Reina Bonilla
3. 598 views
Calculate the number of moles in 74.1 g Pb(C2H3O2)2.
1. 2 answers
2. asked by Meghan
3. 595 views
True FalseAfter emancipation, blacks joined the Confederate Army in droves. I guess this would be true but, much more African
1. 1 answer
2. asked by Anonymous
3. 593 views
A projectile is shot straight up from the earth's surface at a speed of 1.20 x 104 km/hr. How high does it go?
1. 1 answer
2. asked by Sarah
3. 591 views
For a random sample of 12 observations, the sample mean was 407 and the standard deviation was 6. Using the .05 significant
1. 0 answers
2. asked by Jennifer
3. 585 views

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