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Ellen

Questions and answers by Ellen

Questions (138)

A 25.00mL sample of a household cleaning solution was diluted to 250.0mL in a volumetric flask. A 50.00mL aliquot of this
1. 5 answers
2. 2,607 views
How would you graph y= x^3 +1?I know the slope for the equation is y'= 3X^2. assign numbers to x and solve for y to get the
1. 1 answer
2. 460 views
7th grade--how do I determine the slope of a set of stairs? Thanksyou find it by measuring thr rise over the run i.e. the
1. 1 answer
2. 372 views
The difference of two numbers is 9. The sum of 3 times the greater number and 4 more than the lesser number is 51. What are the
1. 3 answers
2. 445 views
I need help with this question:replace the underlined nouns in this paragraph with personal pronouns.Write the pronouns on the
1. 4 answers
2. 1,160 views
X5 x X4
1. 4 answers
2. 283 views
in- 0 1 2 3 4 Xout- 1 4 10 0's output is 1 and 1's output is 4, then 3's output is 10....wat is the rule to this??? and wat are
1. 1 answer
2. 279 views
in- 0 1 2 3 4 Xout- 1 4 10 0's output is 1 and 1's output is 4, then 3's output is 10....wat is the rule to this??? and wat are
1. 1 answer
2. 314 views
What does Endoplasmic Reticulum means or is?
1. 1 answer
2. 326 views
How did the fighting at Lexington and Concord affect the relationship between the colonies and the Great Britain?
1. 2 answers
2. 494 views
What did the First Continental Congress achieve?
1. 1 answer
2. 418 views
If negative 20 equals 168, negative 15 equals 153, negative 10 equals 138, negative 5 equals 123, 0 equals 108, 5 equals 93, 10
1. 10 answers
2. 1,593 views
If negative 20 equals 168, negative 15 equals 153, negative 10 equals 138, negative 5 equals 123, 0 equals 108, 5 equals 93, 10
1. 6 answers
2. 583 views
What are some interesting facts about the uniforms in the Revolutionary War?
1. 1 answer
2. 470 views
9k+6<39 -
1. 3 answers
2. 271 views
Sorry the question didn't come out right. It was supposed to read. 9k + 6 is < or equal to 39.
1. 2 answers
2. 484 views
dwrs can you show your work? Can figure out who you got the 3?
1. 1 answer
2. 281 views
So since 2/3 of Spinner 1 is sedans (The 3rd is a truck), and 1/2 of Spinner 2 is purple (the other half is a green), write a
1. 3 answers
2. 674 views
So since 2/3 of Spinner 1 is sedans (The 3rd is a truck), and 1/2 of Spinner 2 is purple (the other half is a green), write a
1. 2 answers
2. 502 views
Name 3 documents and or important people involving the government?For example: as one of the documents, The Articles of
1. 3 answers
2. 664 views
consider three consecutive even intergers, the least of which is x. Write a polnomial representing the product of these three
1. 1 answer
2. 448 views
(p+3)(p-4)(p-3)(p+4)
1. 1 answer
2. 253 views
X- 0 1 2 3 4 5 6Y- -7 -4 -1 2 5 8 11 this is a x and y table I need to find out wat the rule is to get y. So the equation would
1. 5 answers
2. 759 views
okayso the decimal is 0.001 and I need to convert it to a fraction and a precent? how do I do that??
1. 3 answers
2. 591 views
What does P-E-M-D-A-S mean?I know they are the orders of operation, but I forgot what each letter stand for??? HELP!
1. 3 answers
2. 344 views
so, how do u really say this quote in french?"You are in love when suddenly reality is in your dreams, and you cannot sleep
1. 2 answers
2. 620 views
You were busy working on a problem using 4 big squares, 8 rectangles, and 8 small squares. Your partner accidentally knocked
1. 1 answer
2. 990 views
You were busy working on a problem using 4 big squares, 8 rectangles, and 8 small squares. Your partner accidentally knocked
1. 1 answer
2. 532 views
You were busy working on a problem using 4 big squares, 8 rectangles, and 8 small squares. Your partner accidentally knocked
1. 2 answers
2. 546 views
Whats Christmas anyways?Like, how did it become a true holiday? What is the story behind it?
1. 1 answer
2. 438 views
A) List two examples of pairs of numbers that share a common factor.B) List a variable pair with a common factor. C) Why do u
1. 3 answers
2. 493 views
What is the differance between a discrete graph and a continuous graph?Thanks so much!
1. 1 answer
2. 395 views
Hi! i am wondering if you can explain amendmant 7 in more depth.Thanks!
1. 1 answer
2. 354 views
How does the ozone effect the wind patterns
1. 1 answer
2. 354 views
Account Word Problems like this I seem not to get the concept , please give me an exam as how to figure out this problem.1. The
1. 2 answers
2. 615 views
If you poked 3 holes in a vertical line in a bottle filled with water, which hole will spurt water the furthest? Why?-thanks so
1. 3 answers
2. 503 views
Explicitly explain how to tell an answer is correct when solvingi systems of equations.-thanks so much!
1. 2 answers
2. 996 views
Solve sytems of equations for7x-3y=31 and y-5=3x I need to find what x and y equal. thanks!
1. 1 answer
2. 432 views
A 4422.0 kg truck is parked on a 10.8° slope. What is the friction force on the truck?
1. 5 answers
2. 492 views
A pendulum consists of an object of mass 1.07 kg that hangs at the end of a massless bar, a distance 1.14 m from the pivot
1. 4 answers
2. 457 views
We did a flame testing lab today with the following metal ions:Sodium, Na^+1 Barium, Ba ^2+ Calcium, Ca ^2+ Copper, Cu ^2+
1. 5 answers
2. 1,375 views
Rewrite each polynomial as the product of two binomials.1. y^2 + 6y + 9 2. 25x^2 - 10x + 1 3. 36 - y^2 I don't understand how to
1. 1 answer
2. 468 views
Rewrite each polynomial as the product of two binomials.1. y^2 + 6y + 9 2. 25x^2 - 10x + 1 3. 36 - y^2 I don't understand how to
1. 4 answers
2. 637 views
1. Oanh walked from her home to the grocery store at 3 mi/h and jogged home at 6 mi/h. Her total round trip was 15 minutes
1. 5 answers
2. 602 views
What are the three aspects of Orientalism
1. 3 answers
2. 826 views
I need help understanding how to slove two step equations. Example -10 - k=-36
1. 2 answers
2. 822 views
I am writing my father's obituary - he passed away unexpectedly on Monday. He was from a very small town and always quoted verse
1. 1 answer
2. 472 views
A 0.40 - kg object connected to light spring with a force constant of 19.6 N/m oscillates on a frictionless horizontal surface.
1. 2 answers
2. 937 views
What arguments can you make against the common assumption that marketers only worry about advertising?
1. 1 answer
2. 462 views
A hollow plastic spherical bobber of mass 0.005 kg and volume of 50 cm3 floats on the surface of a lake supporting a submersed
1. 5 answers
2. 1,855 views
If a temperature increase from 18.0 to 34.0 triples the rate constant for a reaction, what is the value of the activation
1. 2 answers
2. 656 views
The rate constant of a reaction at 30 was measured to be 5.7×10^-2. If the frequency factor is 1.2 x10^13 /s what is the
1. 1 answer
2. 435 views
The following reaction was monitored as a function of time: AB--->A +BA plot of 1/[AB] versus time yields a straight line with
1. 3 answers
2. 746 views
The following reaction was monitored as a function of time: AB--->A+BA plot of 1/[AB] versus time yields a straight line with
1. 1 answer
2. 812 views
If 5.00 mL of HCl require 4.03 mL of 0.9581 M NaOH to just consume the HCl, what is the concentration of the HCl?
1. 3 answers
2. 492 views
If 5.05mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of HCl was added to 1.00 g of an
1. 4 answers
2. 1,167 views
what is the pH of 0.15 M NaF?
1. 3 answers
2. 1,087 views
Calculate the pH of the solution that results from the mixture. 170 mL of 0.12 M C2H5NH2 with 285.0 mL of 0.22 M C2H5NH3Cl.
1. 3 answers
2. 885 views
Consider the titration of 21.0 mL sample of 0.110 M HC2H3O2 with 0.130 M NaOH. what is the initial pH? what is the volume of
1. 7 answers
2. 1,404 views
A volume of 50.0 mL of aqueous potassium hydroxide was titrated against a standard solution of sulfuric acid. What was the
1. 2 answers
2. 1,086 views
Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of
1. 2 answers
2. 1,311 views
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What
1. 4 answers
2. 1,346 views
Typically, when a person coughs, he or she first inhales about 2.50 L of air at 1.00atm and 25 degreesC. The epiglottis and the
1. 7 answers
2. 4,863 views
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What
1. 4 answers
2. 2,295 views
80.0 mL of water is initially at room temperature (22degrees C). A chilled steel rod at 2 degrees C is placed in the water. If
1. 2 answers
2. 760 views
A calorimeter contains 21.0 mL of water at 14.0 degreesC. When 1.90 g of X (a substance with a molar mass of 70.0 g/mol) is
1. 1 answer
2. 749 views
the relationship between rotational speed and net force is direct right? and also can u say why it is direct
1. 1 answer
2. 401 views
The hoover dam produces 2x10 to the 9 Wof electricity. It is composed of 7x10 to the 9 kg of concrete. To produce 1 kg of
1. 2 answers
2. 879 views
A mass of 0.38 kg is attached to a spring and is set into vibration with a period of 0.22 s. What is the spring constant of the
1. 3 answers
2. 1,457 views
A trapeze artist swings in simple harmonic motion with a period of 3.2 s. The acceleration of gravity is 9.81 m/s2 . Calculate
1. 4 answers
2. 2,589 views
Consider a pendulum of length 4.557 m. The acceleration of gravity is 9.832 m/s2 .a) What is its period at the North Pole?
1. 4 answers
2. 1,711 views
Stuck! Help!2.5 cubed? Xxxxx
1. 1 answer
2. 348 views
The measure of one angle in a linear pair is 30 more than twice the measure of the other angle. Find the measure of the angles.(
1. 4 answers
2. 1,854 views
There are about 300,000,000 US citizens. If we wanted to assign each person a uniqueidentifier, using DNA sequences, how long a
1. 2 answers
2. 541 views
A segment of double-stranded DNA contains 31% Adenine (A) bases.a. What are the percentages of the other three bases in the DNA
1. 1 answer
2. 1,267 views
One of the characters Mendel studied was the position of the flowers. He crossed plantsthat had flowers at the tips of the stems
1. 1 answer
2. 483 views
Two objects attract each other gravitationally with a force of 2.9 10-10 N when they are 0.29 m apart. Their total mass is 4.0
1. 1 answer
2. 892 views
A projectile is fired straight up at a speed of 15 m/s.How long does it take to reach the top of its motion? The acceleration of
1. 2 answers
2. 852 views
A projectile is fired straight up at a speed of 15 m/s.How long does it take to reach the top of its motion? The acceleration of
1. 3 answers
2. 1,416 views
Consider a frictionless track as shown in the figure below. A block of mass m1 = 5.75 kg is released from A. It makes a head on
1. 1 answer
2. 703 views
Él no va nunca.He never goesÉl ve alguien.He sees someone. Él no ve nadie.He doesn’t see anyone.
1. 5 answers
2. 416 views
I'm not sure what these questions mean and I have to answer them for homework¿Qué necesitas para comer en cereal?does this ask
1. 6 answers
2. 1,259 views
Please check-I'm having a problem interpreting these questions and I have to answer them for homework. Could you please check my
1. 5 answers
2. 669 views
I'm so confused with these-please check them.¿Estudias algo los sábados? No, no estudio nada los sábados.Do I need the no, no
1. 3 answers
2. 521 views
What is the likely source of error from reading a graph where the absorbance (y-axis) versus concentration (x-axis) shows
1. 1 answer
2. 514 views
The formaldehyde content of a pesticide preparation was determined by weighing 0.3124g of the liquid sample into a flask
1. 5 answers
2. 3,381 views
The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call
1. 4 answers
2. 1,317 views
The call letter of a radio station must have 4 letters.The first letter must be a K or a W. How many different station call
1. 3 answers
2. 897 views
Given that g is the inverse function of f, and f(3)=4, and f'(3)=5, then g'(4)= ?
1. 1 answer
2. 787 views
determine the intervals where f(x) = e^((-x^2)/2) is increasing and where it is decreasing
1. 1 answer
2. 383 views
Universal instruments found that the monthly demand for its new line of Galaxy Home Computers t months after placing the line on
1. 5 answers
2. 3,596 views
A square is made up of section A and section B. Section A is 500 sq. ft. and section B is 750 sq. ft. What percent of the square
1. 1 answer
2. 386 views
Solve using set builder notation, show all work. 12x-25 is greater than or = to 3x-5(x+6)
1. 3 answers
2. 1,087 views
mx3-nx2+5x-1 is divided by x-2 the remainder is -39. When divided by x-1 the remainder is 3. What are the values of m and n.
1. 3 answers
2. 1,181 views
Four consecutive integers have a product of 360 Find the integers by writing a plynomial equation that represents the integers
1. 4 answers
2. 2,588 views
If the government imposes a price ceiling of $100 on a market, what would happen in the market as a result of protests of price
1. 1 answer
2. 1,332 views
How many grams of I2 are present in a solution if 33.75mL of 0.140M Na2S2O3 solution is needed to titrate the I2solution?
1. 3 answers
2. 826 views
Write the total and net ionic equations for the following molecular reaction:HgNO3 (aq) + NaCl (aq) -> HgCl (s) + 2 NaNO3 (aq)
1. 1 answer
2. 648 views
if -2x+5=2-(5-2x), what is the value of x?
1. 1 answer
2. 322 views
The Henry's law constant for CO2 at 20°C is 3.7*10^-2 M/atm. What mass of CO2 (in grams) is present in 355 mL of soda drink if
1. 4 answers
2. 3,176 views

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