smith
Most popular questions and responses by smith
chemistry
When aqueous solutions of potassium hypochlorite and nitric acid are mixed, an aqueous solution of potassium nitrate and hypochlorous acid results. Write the net ionic equation for the reaction. Use H+ for the hydronium ion.
asked on March 3, 2014 
chemistry
If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92liter solution, what is the resulting molarity? 0.44 M CaCl2 0.70 M CaCl2 2.3 M CaCl2 3.0 M CaCl2
asked on November 7, 2010 
Math
According to the National Center for Health Statistics, the mean height of an American male is 69.3 inches and the mean height of an American female is 63.8 inches. The standard deviation for both genders is 2.7 inches. According to Chebyshev’s Theorem
asked on November 15, 2017 
chemistry
if it requires 35.0 milliliters of 0.50 molar NaOH to neutralize 25.0 milliliters of HCl, what is the concentration of the HCl solution? Balanced equation: NaOH + HCl yields NaCl + H2O
asked on November 17, 2010 
chemistry
Which of the following gases effuses the fastest at a given temperature? Ne CH4 Ar H2
asked on October 31, 2010 
math
Cazz receives a semimonthly paycheck from a jazz club of $4,500.00. He is married and is entitled to 1 withholding allowance. Using the percentage method, calculate the amount of income tax that should be withheld from his paycheck each pay period.
asked on October 1, 2015 
Chemistry 1150
Instant cold packs, often used to ice athletic injuries on the field, contain ammonium nitrate and water separated by a thin plastic divider. When the divider is broken, the ammonium nitrate dissolves according to the following endothermic reaction:
asked on February 25, 2014 
chemistry
How many liters of fluorine gas, at standard temperature and pressure, will react with 23.5 grams of potassium metal?
asked on October 31, 2010 
Physics
A 7.30 kg sign hangs from two wires. The first wire is attached to the left end,and pulls 28.0 N directly left. What is the X component of the force of the second wire
asked on June 11, 2019 
chemistry
What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)? 6.4 L 22.4 L 32.0 L 78.4 L
asked on October 31, 2010 
Human Development
Blake amuses and challenges his teachers with his independent thinking. He’s selfreliant and responds appropriately to corrections and criticism. Blake’s parents probably use the _______ style of child rearing. A. permissive C. authoritative B.
asked on March 29, 2011 
chemistry
If 35.8 grams of LiCl are dissolved in 184 grams of water, what is the concentration of the solution in percent by mass?
asked on November 29, 2010 
chemistry
How many grams of methane gas (CH4) are in a 15.8 liter sample at 1.2 atmospheres and 27°C
asked on October 31, 2010 
English 10
Which sentence correctly punctuates a nonessential appositive phrase? A. Aries, one of thirteen constellations in the Zodiac, contains four stars. B. Aries one of thirteen constellations in the Zodiac contains four stars. C.Aries, one of thirteen
asked on November 18, 2014 
Physics
A locomotive creates a 59400 force which creates an acceleration of 0.145 m/s. What is the mass of the locomotive
asked on June 12, 2019 
chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas?
asked on October 31, 2010 
mat
A family left their house in two cars at the same time. One car traveled at an average of 7 miles per hour faster than the other. When the first car arrived at the destination after 5 & 1/2 hours of driving, both cars had driven 599.5 miles. If the second
asked on January 24, 2017 
Calc
Oil spilled from a ruptured tanker spreads in a circle whose area increases at a constant rate of 6.5 {\rm mi}^2{\rm /hr}. How rapidly is radius of the spill increasing when the area is 10 {\rm mi}^2? The radius is increasing at
asked on November 3, 2015 
math
ht tp://ww w.you tube.c om/watch?v=xjV HHE22r3I
asked on March 14, 2012 
chemistry
If 2.1 moles of CaCl2 are dissolved in enough water to make a 0.92liter solution, what is the resulting molarity?
asked on November 28, 2010 
chemistry
The presence of a catalyst provides a reaction pathway in which the activation energy of a certain reaction is reduced from 188 kJ/mol to 86 kJ/mol which increases the rate of the reaction. How many times faster is the reaction with the catalyst at 307 K,
asked on June 12, 2012 
chemistry
Under certain conditions, neon (Ne) gas diffuses at a rate of 7.0 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. What is the approximate molar mass of the unknown gas? 6.5 g/mol 11 g/mol
asked on October 31, 2010 
us history
cryptogram grid
asked on December 2, 2009 
Algebra
What number is not part of the domain of the function g(x)=x+2/x1 How can you tell? I am stuck.
asked on October 25, 2016 
chemistry
What would be the resulting molarity of a solution made by dissolving 21.9 grams of KCl in enough water to make an 869milliliter solution?
asked on November 29, 2010 
chemistry
A 0.5917 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 1.5683 g. What is the mass
asked on March 3, 2014 
chemistry
. Which of the following will result in a chemical change? A. Melting ice to obtain water B. Evaporating alcohol into vapor C. Drying wood in a shed D. Burning coal in a furnace 2. A salt is obtained as a reaction between A. a nonmetal and a metal. B. a
asked on July 2, 2013 
AP Calculus
True or False If f'(c)=0=f''(c)is less than 0, the f(c) is a local maximum. Justify your answer.
asked on December 15, 2010 
hypothesis statistic
how a t Test can be employed in hypothesis testing by the use of directional vs. nondirectional hypotheses. Discuss types of research where using the t statistic may be an appropriate alternative to using a zscore. Respond to at least two of your fellow
asked on December 15, 2010 
chemistry
Why is the ionic compound NaCl (table salt) able to dissolve in a glass of the molecular compound water (H2O)?
asked on November 29, 2010 
chemistry
Water is a polar solvent. Which of the following will not dissolve in water? sugar table salt vinegar olive oil
asked on November 7, 2010 
College Chemistry
A 38 L gas tank at 35 Celsius has nitrogen at a pressure of 4.65 atm. The contents of the tank are transferred without loss to an evacuated 55.0L tank in a cold room where the temperature is 4 Celsius. What is the pressure of the tank??
asked on March 2, 2010 
math
Please help solve this question. Thx in advance. Nick, Ryan, Simon, and James from the band Dandelion sang a few songs at their first concert. Always three of them were singing, and one was playing the guitar in accompaniment. James sang the most songs of
asked on January 5, 2018 
art urgent
achile de gas in the uniform of a cadet by edgar degas how was proportion used in this image to create a mood of tranquility to create an optical illusion to create a sense of perspective in the image to make sure the person was drawn correctly
asked on November 5, 2015 
algebra II
If a pro basketball player has a vertical leap of about 25 inches, what would his hang time be? Use V=48T^2 Answer:_______seconds.
asked on October 23, 2010 
Health
What shortterm and longterm health conditions are direct consequences of the obesity epidemic? What individual and societal changes can help reverse the obesity epidemic?
asked on April 28, 2009 
Math
The sales price of a car is 12,590, which is 20% off the original price. What is the Original price?
asked on March 11, 2008 
Math
If sally can paint a house in 4hrs, and John can paint the same house in 6hrs, How long will it take for both of them to paint the house together?
asked on March 11, 2008 
Math
Jim is able to sell a handcarved statue for $670 which was a 35% profit over his cost. How much did the statue originally cost him? How do you find the answer to this?
asked on March 11, 2008 
finance
suppose the Wrights found that both Tom and Sue had a life insurance protection gap of $50,000. Present the steps in sequence how Wrights should proceed to search for protection to close that gap?
asked on June 25, 2008 
math
What is the theoretical probability of getting tails if you flip a coin 40 times? a)If you did this experimental would you result be the same? Why? b) Is is possible to flip a coin 40 times and get tails each time? Explain.
asked on June 21, 2017 
Differential Equations
Consider the system shown below of two masses of mass m, coupled together between two fixed walls via springs with varying spring constants. Let x(t) and y(t) be the horizontal displacements of the two masses as a function of time. (a)Write down a system
asked on October 13, 2014 
algebra
If a pro basketball player has a vertical leap of about 20in., what is his hang time? Use the hang time function v=49t^2
asked on November 9, 2011 
algebra
Rationalize the denominator, assume that all expressions under radicals represent postive numbers. sqrt:a  sqrt:b/sqrt:a + sqrt:b
asked on November 8, 2011 
math
How much money must I start out with if I want to end up with 20,000 over 5 years with and intrest rate of 5% a year.
asked on February 14, 2011 
chisquare test
the assumptions for using a chisquare test. Research articles provide practical examples from the research to support your assumptions. Include a citation of one article you used for your research
asked on December 15, 2010 
analysis of variance
which analysis of variance should be applied when an experiment has more than one independent variable. Discuss the assumptions and limitations of the analysis of variance in comparison with the t test including a discussion of post hoc tests
asked on December 15, 2010 
psy325
For each of the following samples that were given an experimental treatment, test whether these samples represent populations that are different from the general population: (a) a sample of 10 with a mean of 44, (b) a sample of 1 with a mean of 48. The
asked on December 15, 2010 
math
A rectangular window is 5 ft by 8 ft. Becky wants to replace the glass in the window. How many square feet of glass should she buy?
asked on June 23, 2010 
college trig
From a point on the ground a person notices that a 110ft tree on top of a hill subtends an angle of 3°. If the angle of elevation to the bottom of the tree, represented by angle A in the figure below, measures 37°, find the height h of the hill
asked on March 26, 2010 
math
961 = X squared + Y squared + Z squared Find possible values for X, Y, Z
asked on July 14, 2018 
math
the length of each edge of a cube is of length 3m. the edges are increased by 20%. Calculate the percentage increase in the volume of the cube.
asked on April 7, 2017 
Maths
The ball of a float value is a sphere 200mm in diameter. Calculate the volume and surface area of the ball
asked on November 17, 2015 
Physics
A student applies a force of magnitude 39.0 N at an angle of 22.6o with the horizontal to push a 4.00kg textbook 1.00 m across a table from rest to a final speed of 1.75 m/s. Find the work done by friction on the textbook.
asked on July 18, 2012 
math
To advertise their business, Toni and Mandy can either purchase flyers or email addresses. They can print, distribute and pay the postage of 3 million flyers for $450. Find the unit price for the flyers.
asked on October 7, 2011 
statistic
how a t Test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students. Why would this t Test be preferred to using another test statistic?
asked on December 15, 2010 
11th grade English
Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?
asked on May 16, 2010 
governmnet
Describe the basic character of the unitary states. how can one reconcile the concept of the unitary state with the principles of the Declaration of Independence?
asked on April 2, 2009 
math
one decimeter is equal to....how many centimeters
asked on March 27, 2008 
math or physics
Find the distance from 0 to 3 of the ∫ l3t5ldt. I don't understand how the answer is 41/6.
asked on September 21, 2018 
Math
63r3
asked on December 11, 2016 
math
if you got 12 yds of fabric and each skirt require 7/8 how many skirts can be made
asked on October 7, 2016 
Pre calc
estimate, correct to three decimal places all the zeros of the polynomial p(X) = x^4  4x^3 +5x 1
asked on May 17, 2016 
maths
if the angle of elevation of A from B is 65' what is the angle of depression of BB from A
asked on May 14, 2016 
Physics
A speedboat increases in speed from 21 m/s to 30.9 m/s in a distance 191 m. a)Find the magnitude of its acceleration. Answer in units of m/s^2. b)Find the time it takes the boat to travel this distance. Answer in units of s.
asked on February 5, 2014 
math
8x + 5y = 144 4x + y = 36
asked on November 5, 2013 
Introduction to Psychology
Alexander, a fifth grade teacher, believes that Kimberly's behavior is a result of poor parenting, The school concerned with her inability to focus, attend to directions, and recall information from the previous day or events from earlier in the day.
asked on May 30, 2012 
Introduction to Psychology
Behavioral and Psychodynamic perspectives differ in that the former emphasizes the ______ while the latter focuses on _____.
asked on May 30, 2012 
Introduction to Psychology
Dr. Hall believes that thought processes determine behavior.She encourages her patient to examine the way he looks at problems and solves problems. They look for successful and unsuccessful evaluations and strategies.
asked on May 30, 2012 
Math
Beaufort Scale and Wind Effects 0 Smoke rises vertically 1 Smoke shows wind direction 2 Wind felt on face 3 Leaves move, flags extend 4 Paper, small branches move 5 Small trees sway, flags beat 6 Large branches sway, flags beat 7 Large branches sway,
asked on February 22, 2012 
algebra
Write an equation of the line containing the specified point and parallel to the indicated line.(1,4)3x+y=5
asked on August 2, 2011 
psy325
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size (b) 3
asked on December 15, 2010 
Eurpoean History
How did imperial forces entice resistant countries into submission? What role did the promise of democracy play? In your opinion, was this promise kept? Why or why not?
asked on October 21, 2010 
algebra
sarah has dimes and nickels which total $1.65. the number of nickels she has is 3 less than the number of dimes. how many of each does she have?
asked on October 17, 2010 
math
two planes take off from an airport at the same time and head in opposite directions at 260 mph and 275 mph respectively. in how many hours will they be 1605 miles apart?
asked on October 16, 2010 
math
a coast guard ship left the port at 30 mph. four hours later a helicopter was dispatched at 90 mph to intercept the ship. how long will it take the helicopter to catch the ship?
asked on October 16, 2010 
algebra
an insecticide originally contained 1/2 oz of pyrethrins. the new formula contains 5/8 oz of pyrethrins. what percent of pyrethrins of the original formula does the new formula contain?
asked on October 9, 2010 
algebra
Solve by elimination 7r5s=41 5r+7s=61
asked on October 5, 2010 
math
Evaluate 80mi/h x 3 h Be sure to use the proper units
asked on June 26, 2010 
geometry
Let A = {circle, square} and let B = {3, 4, 5}. Find A X B
asked on June 18, 2010 
Government
What's the U.S model of corporate control? What are its consequences for the American society?
asked on May 1, 2010 
college
what kind of government does the Gayanashagowa represent?
asked on April 2, 2009 
Calculus
Find the maximum and minimum values of f(x,y,z)=x+4y+5z on the sphere x^2+y^2+z^2=1.
asked on November 19, 2008 
Personal Finance
What does it mean by 401k Investment Vehicles?
asked on June 14, 2012

Math
Please?!!!
posted on May 14, 2018 
Math
Answer stupids!!???
posted on May 14, 2018 
math
Answer!!!!!???
posted on May 14, 2018 
lan
Thanks!!!!!!!! Jr??!!!!!!!!
posted on May 9, 2018 
English pls help
Answer the question !!!!!!!!!!!!!!!!!!!!!please !!!!!!!!!!
posted on May 9, 2018 
Math
I don't understand the answer henry???
posted on May 8, 2018 
statistics
Yes. Although the selections are not independent, they can be treated as being independent by applying the 5% guideline.
posted on February 25, 2018 
Science
ok
posted on August 12, 2017 
Physics/math
A gun with a muzzle velocity of 1500 feet per second is fired at an angle of above the horizontal. Find the vertical and horizontal components of the velocity. (Round your answer to one decimal place.)
posted on November 30, 2016 
statistics
tell me answe
posted on March 4, 2016 
Algebra
you do it yourself
posted on January 12, 2016 
art urgent
oh sorry for not putting up my choice i believe it is d because it obviously not a or b and my definition of perspective is the illusion of depth which the picture doesnt have much of
posted on November 5, 2015 
MATHS
13
posted on October 18, 2014 
Critical Thinking (philosophy)
questions 125
posted on December 6, 2012 
personl finance
What does it mean by 401k Investment Vehicles?
posted on June 14, 2012