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What happens if we add 200 mg of calcium hydroxide in 100 g of water at 20 ° C?
1. 1 answer
2. 382 views
Is it possible to separate Bi, Cu and Ag from a mixture containing:c(BiO+)=0,08M c(Cu2+)=0,242M c(Ag)=0,106M c(HClO4)=1M Eo Bi =
1. 0 answers
2. 422 views
Calculate pH and concentration of H2SO3, H2SO3- and SO32- in NaHSO3 c=0,05M.Ka1= 1,23*10^(-2) Ka2= 6,6*10^(-8) Results attached
1. 2 answers
2. 3,771 views
Enter the formulae of the products and give their states. Type your answer using the format Na2SO4(aq) for Na2SO4(aq). Do not
1. 1 answer
2. 619 views
A large screen at a theater measures 65 feet diagonally. The aspect ratio (width compared to height) of the screen is 21:9. What
1. 1 answer
2. 614 views
A horizontal water pipe goes from a large diameter to a small diameter and then back to the first diameter as shown in the
1. 1 answer
2. 1,638 views
Please answer ! Answer everything!A right rectangular prism is intersected by a horizontal plane and a vertical plane. The cross
1. 2 answers
2. 1,040 views
if a varies inversely as b and a=2, when b=15 find a when b=6
1. 1 answer
2. 455 views
Two objects of different masses are joined by a light rod.a) Id the moment of inertia about the center of mas the minimum or
1. 0 answers
2. 848 views
1. Which of the following correctly describes the image below? protein Molecule RNA Molecule amino Acid carboxylic Acid
1. 3 answers
2. 6,289 views
I've done this one multiply times yet it never seems to work out, I'm supposed to simplify yet it never works outtan(csc^-1(x/x-
1. 1 answer
2. 369 views
A large box has a mass of 500kg and the coefficient of static friction for the box and the floor is 0.45, and the coefficient of
1. 1 answer
2. 700 views
A mystery surprise box is sliding down a ramp at a constant speed. The box has a mass of 55.0kg and the ramp makes a 40.0œ
1. 1 answer
2. 600 views
just trying to find out what temperature the water in my celcius heating system needs to be to achieve an air tempature of 68
1. 1 answer
2. 483 views
Use the van der Waals equation of state to calculate the pressure of 3.60 mol of NH3 at 489 K in a 4.50-L vessel. Van der Waals
1. 5 answers
2. 4,925 views
A salesperson contacts eight potential customers per day. From past experience, we know that the probability of a potential
1. 1 answer
2. 1,644 views
Draw two number lines that show 0.20 and 1/5 are equivalent
1. 8 answers
2. 4,807 views
A drone 125 ft high sights a landing pad with an angle of depression of 15 degrees. what is the horizontal distance between the
1. 1 answer
2. 599 views
A skier speeds down a smooth ski slope which is at an angle of θ = 21° with the horizontal. The mass of the skier is 75 kg.
1. 0 answers
2. 1,256 views
You fashion a sling shot with a rather long and wide rubber band and practice hurling pebbles. You pull back on the center of
1. 1 answer
2. 1,592 views
Gisela has 135 cds 11 are pop music she has 3 times as many rocks cds as she had classical how many rocks cds does she have?
1. 5 answers
2. 2,081 views
Calculate the standard heat of reaction at 250C (298K) and 1 atm pressure of3FeO(s) + 2Al(s) → Al2O3(s) + 3Fe(s) in terms of
1. 1 answer
2. 1,259 views
A mover has to move a heavy sofa of mass 146 kg to the second floor of the house. He uses a rope to pull the sofa up a ramp from
1. 1 answer
2. 1,581 views
What is the commission on a sale total of $300,000 if you keep 8%?help!
1. 1 answer
2. 390 views
The fence in David's backyard is 14 feet 5 inches long how many total inches is that
1. 1 answer
2. 368 views
You are given a recipe for a buffer that contains 5% (w/v) MgSO4.7H2O. However, you only have MgSO4 anhydrous available to you.
1. 2 answers
2. 909 views
by 3 pm the temperature had increased by another 5 degrees. was the temperature at 3pm positive or negative
1. 4 answers
2. 1,085 views
I'm having trouble turning mM to mOsmoles. The equation goes like this: red blood cell are placed into a beaker filled with .5L
1. 0 answers
2. 716 views
A constant force of friction of 50 N is acting on a body of mass 200kg moving initially with a speed of 15m/s. How long does the
1. 2 answers
2. 1,765 views
A square football field 3 mi. wide.
1. 1 answer
2. 364 views
If the perimeter of a rectangle is 48 ft. and the width is 9 ft., what is the length of the rectangle?
1. 1 answer
2. 365 views
The perimeter of a rectangle is 56 meters. If the width of the rectangle is 7 meters, find the length.
1. 1 answer
2. 452 views
A sail on a sailboat has a base of 10 ft. and a height of 18 ft. and needs to be sealed with water repellent. One can of water
1. 3 answers
2. 444 views
Sally is making a tablecloth and wants to put lace around the edges. How much lace will she need to purchase if the radius is
1. 2 answers
2. 528 views
The hydrocarbon emissions at idling speed in parts of million (ppm) for automobiles of 1980 and 1990 model years are given for
1. 0 answers
2. 1,261 views
1) Microscopic hairs of the windpipe are always __________.2) The cilia of the windpipe move harmful substances __________. 3)
1. 3 answers
2. 883 views
I am writing a 300 word short story(or a "'personal' narrative essay") for the prompt: lessons we learn affect one's future.So
1. 1 answer
2. 1,005 views
So we did this lab about how we are to measure the half life of the beta decay of indium 116 (the indium 116 is captured by
1. 0 answers
2. 682 views
The Golden Gate Bridge in San Francisco has a main span of length 1.28 km, one of the longest in the world. Imagine that a steel
1. 1 answer
2. 3,008 views
What is the significance in the observation of discrete spectral lines in the emission spectrum of hydrogen??
1. 0 answers
2. 601 views
A converging lens has a virtual object located a finite distance away. Which of the following must be true? (Select all that
1. 0 answers
2. 826 views
I am just about the processes of writing a short story and I am looking for a word/phrase that can properly describe a
1. 2 answers
2. 535 views
A pair of speakers separated by distance d = 0.900 m are driven by the same oscillator at a frequency of 670 Hz. An observer
1. 2 answers
2. 5,576 views
A pair of speakers separated by distance d = 0.900 m are driven by the same oscillator at a frequency of 670 Hz. An observer
1. 0 answers
2. 982 views
I did a lab about Standing waves on a string and it asked me the following qeuestions:Discuss any errors arising from the method
1. 2 answers
2. 867 views
Suppose you have a string that is being made to vibrate at a specific frequency, f. The speed of waves on the string is v. The
1. 1 answer
2. 910 views
A stretched string is attached to an oscillator. On which of the following quantities does the wavelength of the waves on the
1. 4 answers
2. 909 views
Which of the following equations gives the relationship between S and T in the table below?S 1 2 3 4 5 6 T 1 4 7 10 13 16 How do
1. 2 answers
2. 3,385 views
1. Cate went on a trip of 120 miles at x miles per hour. Returned over same route at 5miles/hour faster than previous rate.If
1. 5 answers
2. 627 views
PLease explain how to do thisAdd or Subtract (m^2-m+3)+(m-1)
1. 1 answer
2. 1,198 views
I brought a book and paid $1.80 in sales tax. If the tax was 8%, what was the cost of the book. How do I solve this problem?
1. 3 answers
2. 694 views
Each day, Wyatt created both humorous and touching poetry in his attic room.his attic room both humorous and touching poetry
1. 2 answers
2. 905 views
Sra. does this essay look ok? It is comparing the Hispanic views on death and the US view.Cultura hispana celebra la muerte de
1. 5 answers
2. 660 views
How can we find the value in decimal stored in the AC register, after executing the MARIE program
1. 0 answers
2. 374 views
9. Which event did NOT change the culture of the United States during the early 1920s? (1 point)a. bank failures that closed
1. 2 answers
2. 947 views
Suppose that Betsy’s utility function is given by the equation U=Y0.3 where Y is measured in thousands of dollars. Betsy’s
1. 0 answers
2. 804 views
You have 250 g of water in an aluminium calorimeter with a mass of 125 g. Howlong will it take to increase the temperature of
1. 1 answer
2. 2,173 views
What are each of these are like:1. Control 2. Conformity 3. Equality 4. Individualism
1. 1 answer
2. 357 views
1. (2cosx-2secx)(3cosx^2+3secx^2+β)2. (16tanxsecx-4secx)/(8tanxsecx+4secx) 3.sinxcosx^3+cosx^4 (hint: GCF) 4. (cosβ+sinβ)^2
1. 3 answers
2. 673 views
1. (-8cosxsinx+4cos2x)^2 +(4cosx^2+8sinxcosx)^22. cos(α-β)cosβ-sin(α-β)sinβ 3. 1+(sinx-cosx)(sinx+cosx) 4.
1. 2 answers
2. 714 views
A parachutist drops out of a plane at an altitude of 150m and accidentally drops his camera. If the parachute opens the instant
1. 1 answer
2. 693 views
Simplify:1. sin(α+β)+sin(α-β) 2. (-8cosxsinx+4cos2x)^2 + (4cos^2x+8sinxcosx)^2 3. sqrt(sin^4xcosx) * sqrt(cos^3x)
1. 2 answers
2. 1,128 views
The area of a circle is given by the formula A = ðr2, where r is the radius. If increasing the radius of a circle by 1 inch
1. 1 answer
2. 2,928 views
Hola Sra. Do these look ok?Part I Complete el párrafo por llenar los espacios en blanco con la forma correcta de los verbos
1. 3 answers
2. 3,046 views
Equation M: y = 3x + 4Equation P: y = 3x + 7 Which of the following options is true about the solution to the given set of
1. 2 answers
2. 1,146 views
How much energy is needed to completely remove an electron from n = 2 in a hydrogen atom?
1. 1 answer
2. 890 views
Hola Sra.! Do these look ok?Escriba un párrafo (por lo menos 5 oraciones) para contestar cada una de las preguntas siguientes.
1. 3 answers
2. 1,844 views
Sinx/Cscx -1+sinx/Cscx +1= 2tan^2x
1. 0 answers
2. 508 views
Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the
1. 4 answers
2. 1,432 views
A container of gas at 24 psi is compressed to one eighth its original volume. What is the new pressure of the gas? Answer in
1. 1 answer
2. 899 views
A chemist prepares a sample of hydrogen bromide and ﬁnds that it occupies 249 mL at 60◦C and 552 Torr. What volume would it
1. 2 answers
2. 3,137 views
Solve tan(40/90) for the double angle cos(2theta). I know I use the x^2 + y^2 = r^2 formula and cos(2theta) = cos^2theta -
1. 1 answer
2. 692 views
A sample of oxygen that occupies 2.5 × 10−6 mL at 508 mm Hg is subjected to a pressure of 1.2 atm. What will the ﬁnal
1. 1 answer
2. 625 views
You are skiing and have a mass of 47 kg and are on a slope making an angle of 37 degrees above horizontal. The coefficient of
1. 11 answers
2. 578 views
Hola Sra. Are these correct?Part I Indique si las palabras dadas son sinónimos, antónimos o que no son relacionadas. 1.
1. 4 answers
2. 2,467 views
Hi! Can someone please help me with these? Thanks! :)Directions: Look for the direction angle for vector v. If necessary, round
1. 1 answer
2. 652 views
u = <7, -3> and v = <-2, 4>. Find u + 3v.
1. 1 answer
2. 350 views
1.How much energy is emitted by 1 mol ofsodium ions emitting light at this wavelength? Answer in units of kJ. This is what I did
1. 3 answers
2. 984 views
Sra. Do these look correct?Part I LOS MANDATOS AFIRMATIVOS. Forme mandatos afirmativos directos según el ejemplo: Ejemplo:
1. 4 answers
2. 2,056 views
A bag contains 5 red and 4 green apples. Michael takes one apple at random from the bag. His sister Ashley then takes an apple
1. 1 answer
2. 1,369 views
A 2.0 kg mass is attached to a string that is 1.0 m long and moves in a horizontal circle at a rate of 4.0 revolutions per
1. 4 answers
2. 1,393 views
A 50 cm diameter wheel rotates through 25 radians.How do I figure out the amount of distance it will move?
1. 1 answer
2. 4,295 views
With an average acceleration of −1.3 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.7
1. 1 answer
2. 973 views
At a parade 1/4 of the participants have red hair, 1/6 of them have brown hair, and the rest of the participants have black
1. 6 answers
2. 733 views
a batter hits a baseball into the air. If the horizontal component (X-component) of the velocity is measured to be 20.4 m/s, if
1. 1 answer
2. 484 views
a bullet is fired horizontally from the top of a cliff that is 15 m above a long lake. if the muzzle speed is 478, how far from
1. 1 answer
2. 529 views
I'm having a tough time with these two questions. I think I have it, based on the indicator, but I'm not positive that the
1. 2 answers
2. 586 views
6% of what number is 10 1/2?Who would you solve this question?
1. 1 answer
2. 340 views
Are my answers correct? Please help. Thank you!18-20) Some arguments have complex premises, where too much information is given.
1. 3 answers
2. 1,073 views
A 0.156 kg ice puck collides with a 0.170 kg ice puck. Both were originally moving at the same speed. Which one has the larger
1. 0 answers
2. 625 views
The quantity demanded x of a certain brand of DVD player is 3000/week when the unit price p is $485. For each decrease in unit
1. 0 answers
2. 1,183 views
If 0.45 M of ammonia solution has a pH of 9.20, what is the H+ concentration of the solution?
1. 1 answer
2. 717 views
[a bullet weighing 50gm hits a 10cmwall with velocity 100ms-1 and comes out of the wall. If the frictional force on the bullet
1. 3 answers
2. 633 views
How did party leaders resolve the disputed election of Rutherford B. Hayes and southern demands for removal of troops in the
1. 4 answers
2. 1,108 views
What was the chief goal of the Compromise of 1850?to resolve Texas's statehood issues to preserve the Union <-- to improve the
1. 4 answers
2. 1,635 views
The length of a rectangle is 4/5 feet. The width is 5/8 feet. How much greater is the length of the rectangle than the width?
1. 2 answers
2. 408 views
13pi/12=________ degrees: Round to the nearest hundredth.
1. 1 answer
2. 474 views
Convert 35 degress to radian measure.Convert 250 degress to radian measure.
1. 1 answer
2. 500 views
Sra. are these correct?Part I ¿Qué harías? Completa las oraciones siguientes en una manera lógica utilizando la forma
1. 4 answers
2. 1,245 views
Sra. Are these correct?Part I ¿Pretérito o imperfecto del subjuntivo? Llene los espacios en blanco con la forma del PRETÉRITO
1. 1 answer
2. 2,437 views

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