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Questions Asked on September 14, 2012

calculate the lattice energy of sodium oxide (Na2O) from the following data:Ionization energy of Na(g): 495 kJ/mol Electron
1. 3 answers
2. asked by Meeeee
3. 9,805 views
Algebra BD bisects <ABC. Solve for x and find m<ABC.m<ABD = 4x - 16, m<CBD = 2x + 6 Please teach me how to work this.
1. 9 answers
2. asked by Jane
3. 7,776 views
Please help...a computerized spin balance machine rotates a 25 inch diameter tire at 480 revolutions per minute. (a) find the
1. 1 answer
2. asked by Michelle
3. 6,972 views
At 23°C, Kp = 0.075 for the equilibrium:NH4HS (s) ↔ NH3 (g) + H2S (g) A sample of solid NH4HS is placed in a closed vessel
1. 2 answers
2. asked by Nicole
3. 6,250 views
A spring of negligible mass has a force constant k = 1600 N/m. You place the spring vertically with one end on the floor. You
1. 4 answers
2. asked by Anonymous
3. 4,607 views
Mary needs to row her boat across a 100m wide river that is flowing to the east at a speed of 1.0m/s. Mary can row with a speed
1. 1 answer
2. asked by Jake
3. 3,683 views
Suppose the price of widgets falls from $7 to $5 and consumption of widgets rises from 15 widgets a month to 25 widgets.
1. 2 answers
2. asked by steve
3. 3,675 views
Now that you've spotted the problems of shift of person and shift of number, revise the paragraph by removing these
1. 3 answers
2. asked by Anonymous
3. 3,541 views
Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to the threshold of hearing)
1. 1 answer
2. asked by Morgn
3. 3,130 views
A partly-full paint can has 0.83 U.S. gallons of paint left in it. (a) What is the volume of the paint, in cubic meters? (b) If
1. 2 answers
2. asked by Emily
3. 2,926 views
14. A racing car accelerates uniformly through three gears, changes with the following average speed:20 for 2.0 s 40 for 2.0 s
1. 5 answers
2. asked by Mariam
3. 2,690 views
Maria ran in a 42 km marathon she covered the first half of the marathon from 0600 to 0715 hours and stopped and rest. She
1. 5 answers
2. asked by Jenibel
3. 2,583 views
8. One nanometer is about 0.00000003937 of an inch. What is this number in standard notation?a. 3.937 x 10^-8 b. 3.937 x 10^8 c.
1. 14 answers
2. asked by Nyla
3. 2,432 views
Conrad taxi service charges $1.50 for the first mile and $0.90 for each additional mile. How far can Mr. Kulp go for $20 if he
1. 5 answers
2. asked by Miranda
3. 2,281 views
Which of the following best describes kinematics?a) Kinematics is a part of mechanics that involves the description of motion.
1. 1 answer
2. asked by Kevin
3. 2,239 views
A water-skier is moving at a speed of 16.7 m/s. When she skis in the same direction as a traveling wave, she springs upward
1. 1 answer
2. asked by Morgn
3. 2,142 views
A wire tooth brace used by orthodontists. The top-most tooth is protruding slightly, and the tension in the wire exerts two
1. 2 answers
2. asked by marissa
3. 1,906 views
The engine of a 1250 kg car provides a forward directed force of 3,560 N. If the car accelerates at a rate of 2.60 m/s2, what is
1. 1 answer
2. asked by nate
3. 1,903 views
The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest
1. 2 answers
2. asked by Claire
3. 1,758 views
I am a number between 7 million and 8 million. All my digits are odd. All the digits in my thousand period are the same. All the
1. 11 answers
2. asked by taesia
3. 1,719 views
2. Find the product of 2 1/2 and 2/5.a. 2 2/10 b. 2 3/7 c. 2 4/9 d. 2 9/10 3. Which of the following makes the statement true?
1. 10 answers
2. asked by Nyla
3. 1,654 views
To find the equation of a line, we need the slope of the line and a point on the line.Since we are requested to find the
1. 7 answers
2. asked by maura
3. 1,613 views
a force of 20 N gives an object an acceleration of 5 m/s2. (a)What force would be needed to give the same object an acceleration
1. 1 answer
2. asked by tracey
3. 1,591 views
Find the limit, if it exists. (If an answer does not exist, enter DNE.)lim (x, y)→(0, 0) of (x^2 + y^2)/[((x^2 + y^2
1. 2 answers
2. asked by Becky
3. 1,565 views
Calculate the following integral:∫ sec^4 (3x)/ tan^3 (3x) dx For this one, can I bring up the tan to tan^-3?
1. 2 answers
2. asked by Robert
3. 1,420 views
required to heat 38.0 g of copper (cu) from 122 degree celsius to 246 degree celsius
1. 1 answer
2. asked by Anonymous
3. 1,419 views
The moon is about 240.000 miles from Earth. What is this distance written as a whole number multiplied by the power of ten?
1. 21 answers
2. asked by Jordan
3. 1,390 views
two trains are traveling toward each other adjacent tracks. one of the trains 230 feet long and is moving at a speed of 60 miles
1. 1 answer
2. asked by Taylor
3. 1,370 views
By violating the Navigation Acts and developing their own trading patterns, were the American colonies also creating their own
1. 3 answers
2. asked by Jackie
3. 1,343 views
I have some questions and answers. Can you please go over them and let me know how I did on it?1. When a manager performs
1. 10 answers
2. asked by Kati
3. 1,336 views
he distance between 2 points (x1,Y1) and (x2,y2) is given by d = square root (x1-x2)^2 + (y1-y2)^2a - pick 2 arbitrary points in
1. 0 answers
2. asked by Greg
3. 1,296 views
"The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed
1. 1 answer
2. asked by Travis
3. 1,284 views
I honestly need help on this question.Determine whether statement(3)follows from statements(1)and(2)by the law of detachment or
1. 1 answer
2. asked by stef
3. 1,275 views
I'm doing a chemistry lab called colorimetric equilibrium study of a complex ion. But I just have one question which is how to
1. 0 answers
2. asked by Katie
3. 1,184 views
The popularity of an individual Hindu deity was largely a reflection ofa) its ranking by the Hundred Schools of Thought. b) the
1. 2 answers
2. asked by anon
3. 1,153 views
A large population has a mean of 200 and a standard deviation of 40. Which one of the following best describes the percentage of
1. 1 answer
2. asked by Natalie
3. 1,152 views
Find a formula for the inverse of the function.y = ln(x + 1)
1. 1 answer
2. asked by Anonymous
3. 1,131 views
If there are 5 teams in one league and 6 teams in another league and if each team from one league plays one team from the other
1. 0 answers
2. asked by Steph
3. 1,101 views
the perimeter of the rectangular playing field is 462 yards. The length of the field is 5 yards less than the triple width. What
1. 1 answer
2. asked by Anonymous
3. 1,087 views
Jim has a total of 77 red and blue marbles. The number of blue marbles is 5 more than twice the number of red marbles. How many
1. 6 answers
2. asked by Terralyn
3. 1,072 views
The "wapple" of a number is defined as the number of positive odd intergers less than that number.1. what is the wapple of 19?
1. 1 answer
2. asked by gary
3. 1,067 views
An object is dropped from a height H above the ground. This free-falling object requires 0.904 s to travel the last 34 m before
1. 1 answer
2. asked by maura
3. 1,065 views
Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The
1. 4 answers
2. asked by kaitlyn
3. 1,057 views
algebra with pizzazz!In music,what does allegro means?
1. 3 answers
2. asked by Mary
3. 1,052 views
Conrad taxi service charges $1.50 for the first mile and $0.90 for each additional mile.-How far can Mr. Kulp go for $20 if he
1. 2 answers
2. asked by Meagieting
3. 1,030 views
Dinitrogen oxide (N2 O) gas was generatedfrom the thermal decomposition of ammo- nium nitrate and collected over water. The wet
1. 2 answers
2. asked by Anonymous
3. 1,017 views
If n(A U B)=22, n(A ∩ B)=8, and n(B)=12, find n(A)If n(A)=8, n(B)=14 and n(A ∩ B)=5, find n(A U B)
1. 1 answer
2. asked by Steph
3. 1,003 views
The engine of a 1250 kg car provides a forward directed force of 3,560 N. If the car accelerates at a rate of 2.60 m/s2, what is
1. 0 answers
2. asked by John
3. 999 views
HELP.Problems 4 - 7: Write an equation for the line in point/slope form and slope/intercept form that has the given condition.
1. 2 answers
2. asked by 987:)
3. 999 views
x y z rhs1 1 2 3 2 1 6 3 0 3 4 13 multiply some number by r2 and add result to r3(2) have to get o in r3 (1)-
1. 1 answer
2. asked by ann :)
3. 997 views
What are some healthy nutrient sources of protein?
1. 1 answer
2. asked by April
3. 979 views
the currency in Great Britain is pound and the price of a particular British car is 12,000. suppose the exchange rate is 0.67
1. 2 answers
2. asked by ashley
3. 962 views
the acceleration of gravity on the surface of venus is 8.9 m/s2. would a ball thrown upward from venus return to the ground
1. 1 answer
2. asked by tracey
3. 928 views
what are the 4 maps. phyical, population , polical waht is the last one please
1. 1 answer
2. asked by carina
3. 891 views
the ph of a 0.280m solution of a weak base. B has been measured ph --8.69. using this information. calculate the base
1. 0 answers
2. asked by Emily
3. 887 views
• Discussion of factors that enhance or impede information flow in each step of the process in the human memory model
1. 2 answers
2. asked by Michael holmes
3. 876 views
what is the electron configuration of vanadium?
1. 1 answer
2. asked by Pamela
3. 867 views
Billie wishes to test the hypothesis that overweight individuals tend to eat faster than normal-weight individuals. To test this
1. 0 answers
2. asked by lewis
3. 863 views
The driver of a truck slams on the brakes when he sees a tree blocking the road. The truck slows down uniformly with an
1. 2 answers
2. asked by starr
3. 849 views
The Visual Elements:"Street, Dresden", 1907, oil on canvas by Ernst Ludwig Kirchner Describe the shapes in this painting. Are
1. 1 answer
2. asked by Olivia
3. 840 views
each case of almond bars contains 9 smaller boxes. each smaller box contains 24 almond bars. how many almond bars are in each
1. 5 answers
2. asked by Anonymous
3. 822 views
The distance between 2 points (z1,Y1) and (x2,y2) is given by d = square root (x1-x2)+ (y1-y2)^2)a - pick 2 arbitrary points in
1. 1 answer
2. asked by Greg
3. 820 views
Can anyone please help me with this problem?? =/The reaction between solid sodium and iron (III) oxide is one in a series of
1. 1 answer
2. asked by Layla
3. 816 views
What is a complete protein?
1. 0 answers
2. asked by April
3. 807 views
The diagonal of a rhombus are 16cm nd 8cm long.find the measure of the side of a sq. Whose area is the same as that of the
1. 2 answers
2. asked by Simran kaur
3. 807 views
How do i round off the decimal 0.9683 to the nearest tenth, hundredth, and thousandth
1. 3 answers
2. asked by Losa
3. 788 views
7. A cat pushes a ball from a 7.00 m high window, giving it a horizontal velocity of 0.20 m/s. How far from the base of the
1. 2 answers
2. asked by Brooke
3. 788 views
Divers know that the pressure exerted bythe water increases about 100 kPa with every 10.2 m of depth. This means that at 10.2 m
1. 4 answers
2. asked by Anonymous
3. 776 views
What is protein?
1. 0 answers
2. asked by April
3. 768 views
A sprinter explodes out of the starting block with an acceleration of + 2.02 m/s2, which she sustains for 1.12 s. Then, her
1. 1 answer
2. asked by Alex
3. 766 views
a psychologist at a mental hospital was asked to determine whether there was any clear difference in the length of stay of
1. 1 answer
2. asked by sandy
3. 751 views
An object is released from rest on a planet that has no atmosphere. The object falls freely for 5.02 m in the ﬁrst second.
1. 0 answers
2. asked by michelle
3. 751 views
In a marathon race Chad is out in front, running due north at a speed of 3.87 m/s. John is 98 m behind him, running due north at
1. 0 answers
2. asked by Redgy22
3. 730 views
If f(x) =kx^3-1 and f^-1 (15)=2 find k
1. 1 answer
2. asked by jezebel
3. 716 views
Steven collected data from 20 college students on their emotional responses to classical music. Students listened to two
1. 1 answer
2. asked by lewis
3. 712 views
Emily passes a soccer ball 7.1 m directlyacross the field to Kara, who then kicks the ball 13.7 m directly down the field to
1. 2 answers
2. asked by Anonymous
3. 697 views
what is the answer to "construct a segment whose length is EF - CD and by the way a segment symbol is above the EF and CD
1. 1 answer
2. asked by chenel
3. 696 views
Runner A is initially 2.4 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is
1. 1 answer
2. asked by Fiona
3. 682 views
Write the standard form of the equation of the circle with the given center and radius.1. center (-2, 0) and r = 3
1. 1 answer
2. asked by Pango
3. 676 views
A commuter train travels between two downtown stations. Because the stations are only 1.36 km apart, the train never reaches its
1. 0 answers
2. asked by neeba
3. 673 views
Runner A is initially 2.4 km west of a flagpole and is running with a constant velocity of 8.4 km/h due east. Runner B is
1. 1 answer
2. asked by Fiona
3. 665 views
a tortoise crawling at a rate of 0.1 mph, the hare wants to rest 30 more minutes before chasing the turtle at 5 mph. how many
1. 1 answer
2. asked by Anonymous
3. 656 views
Given your knowledge of dualism, choose the best interpretation of presence of dualism in this excerpt from an Emily Dickinson
1. 1 answer
2. asked by Lilly
3. 653 views
how were the ancient aryans a civilization even though they did not have a writing system
1. 0 answers
2. asked by Alfredo
3. 647 views
A boat that travels at a speed of 6.75 m/s in still water is to go directly across a river and back, as shown in the figure
1. 0 answers
2. asked by dj
3. 626 views
The length of a field is three times its width. If the perimeter is 64 m, what is the width of the field?
1. 3 answers
2. asked by some girl
3. 624 views
In 1973, Congress enacted the Endangered Species Act (ESA) to protect plants and animals from extinction. Many methods are used
1. 2 answers
2. asked by earl
3. 619 views
What is the rule for:Domain: 1, 3, 5, 7 Range: 1, 2, 3, 4 Thanks!
1. 1 answer
2. asked by Maria
3. 606 views
Suppose that a tour bus business incurred implicit costs of $600,000 and explicit costs of $7 million in a specific year. If the
1. 0 answers
2. asked by Kristin
3. 605 views
"The sun emits UV radiation that can have serious health consequences. In particular, so-called UVB radiation is mostly absorbed
1. 2 answers
2. asked by Travis
3. 603 views
Hi I am not good with math. Please tell me how to differentiate mixed numbers, order of operation,subtraction, divide and
1. 0 answers
2. asked by Leah
3. 600 views
2. If a firm increases all of its inputs by 60 percent and its output increases by 90 percent, then you know that:A) it is
1. 0 answers
2. asked by Kristin
3. 598 views
A 316-kg boat is sailing 12.0° north of east at a speed of 1.60 m/s. 39.0 s later, it is sailing 36.0° north of east at a
1. 1 answer
2. asked by marissa
3. 597 views
In an action movie, the villain is rescued from the ocean by grabbing onto the ladder hanging from a helicopter. He is so intent
1. 0 answers
2. asked by Michelle
3. 595 views
A high fountain of water is located at the center of a circular pool as shown in the figure below. Not wishing to get his feet
1. 1 answer
2. asked by kim
3. 593 views
You decide to build a pyramid out of wooden blocks. Each block must rest on the corners off 4 other blocks. If there is one
1. 1 answer
2. asked by Carly
3. 593 views
A 49 kg person drinks 270. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 16% of the energy in milk
1. 1 answer
2. asked by Alyssa
3. 584 views
Give an example of languages L1 and L2 that satisfy the conditions (a)L1L2=L2L1, (b) L2 is a proper nonempty subset of L1, and
1. 3 answers
2. asked by Vicky Muda
3. 583 views
Janet jumps oﬀ a high diving platform witha horizontal velocity of 1.84 m/s and lands in the water 2.9 s later. How high is
1. 0 answers
2. asked by Mara
3. 582 views
A ladder 7.65 m long leans against the side of a building. If the ladder is inclined at an angle of 60.5° to the horizontal,
1. 2 answers
2. asked by kim
3. 580 views

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