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Jess

Questions and answers by visitors named Jess, page 4

Questions (494)

CH3CH2NH2(aq) + H2O(l) <-> CH3CH2NH3+(aq) + OH-(aq)Kb = 5.0e-4 Ethylamine, CH3CH2NH, a weak base reacts with water according to
1. 4 answers
2. 9,768 views
Ca(s) + 2H+(aq) → Ca2+(aq) + H2(g)An experiment is performed to determine the volume of hydrogen gas produced when calcium
1. 3 answers
2. 1,107 views
An electrochemical cell based on the decomposition of H2O2 can be constructed based on the half-reactions in the table below.Hal
1. 3 answers
2. 2,208 views
Solve for A and B0.433= (45.6*A) + (3.152*B) 0.3363= (11.92*A) + (37.675*B)
1. 1 answer
2. 347 views
0.433= (45.6*A) + (3.152*B)0.3363= (11.92*A) + (37.675*B) Solve for A and B using matrices
1. 1 answer
2. 398 views
Zinc has three major and two minor isotopes. For this problem, assume that the only isotopes of zinc are the major ones,
1. 4 answers
2. 2,258 views
cr(s)--->Cr^3(aq)+3e- and Pb2+(aq)+2e---->Pb(s) write a balanced equationPlease help thanks
1. 1 answer
2. 342 views
do monocytes derive from killer T cells?
1. 1 answer
2. 315 views
cotx + tanx=
1. 1 answer
2. 319 views
Annabelle wants to move to a new city. If her chance of getting a job in Montreal is 10%, andher chance of getting a job in
1. 1 answer
2. 449 views
Is 0.052 or 0.05 a bigger number?
1. 7 answers
2. 7,384 views
A Youth Correction Center completed a study to explore the proportion of delinquentbehaviour, according to birth order, among
1. 1 answer
2. 425 views
Find the slope of the functions graph at a given point. Then find an equation for the line tangent to the graph there.f(x)=2*squ
1. 2 answers
2. 891 views
r = -5x^2 + 73xCan someone show me the steps to complete the square for that equation? I don't really understand them.
1. 1 answer
2. 426 views
9x^4 - 148x^2 + 64
1. 1 answer
2. 316 views
Suppose that for a company manufacturing calculators, the cost, revenue, and profit equations are given byC = 70,000 + 20x R =
1. 4 answers
2. 5,273 views
If a price-demand equation is solved for p, then price is expressed as p = g(x) and x becomes the independent variable. In this
1. 2 answers
2. 1,169 views
A charter fishing company buys a new boat for $224,000 and assumes that it will have a trade-in value of $115,200 after 16
1. 3 answers
2. 2,521 views
How do you find the intersection of the lines 5x + 2y = 60 and 3x + 2y = 45?
1. 1 answer
2. 431 views
I need help filling in the blanks for this price chain in marketing:Manufacturer's Price.............$15.55 Manufacturer's
1. 2 answers
2. 544 views
N(t) = 100t / (t + 9)where t >=0 Find lim x approaching to infinity N(t)
1. 3 answers
2. 384 views
Dogwood florist opened a business January 1st 2010. During 2010, they had the following transactions and economic events. For
1. 2 answers
2. 502 views
An office machine is purchased for $6000. Under certain assumptions, its salvage value, V, in dollars, is depreciated according
1. 2 answers
2. 793 views
Given V(t) = 125,000e^(t/8) find V('t)
1. 1 answer
2. 306 views
Can someone please help me work out how to get to the answer of:tanx + tan (pi-x) + cot (pi/2+x) = tan (2pi-x)
1. 1 answer
2. 439 views
Find the critical points of f(x) = 0.05x + 25 + (180/x)
1. 1 answer
2. 398 views
P(x) = 12x / (1-x)What are the critical points and where is P(x) increasing and decreasing?
1. 1 answer
2. 310 views
Does an x and y intercept of 0 mean that there is no x or y intercept? Or is 0 an intercept?
1. 1 answer
2. 246 views
What would the derivative of c(x) = (10 - x) + 1.4*sqrt((x^2) + 25)
1. 1 answer
2. 293 views
A parcel delivery service a package only of the length plus girth (distance around) does not exceed 24 inches.A) Find the
1. 4 answers
2. 3,396 views
A fence is to be built to enclose a rectangular area of 800 square feet. The fence along 3 sides is to be made of material $4
1. 4 answers
2. 4,760 views
The projected rate of increase in enrollment at a new college is estimated by dE/dt = 6,000(t+1)^-3/2 where E(t) is the
1. 3 answers
2. 3,826 views
I am doing a report on finding the major challenges in the future of my university with regards to their revenue and expenses. I
1. 1 answer
2. 470 views
We have been requested by a large retailer to submit a bid for a new point-of-sale credit checking system. The system would be
1. 1 answer
2. 1,017 views
Caradoc Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for
1. 1 answer
2. 1,202 views
Gerber Banana Plum Granola costs $0.89 per 5.5-oz serving; each serving contains 140 calories, 31 g of carbohydrates, and 0% of
1. 2 answers
2. 685 views
Quadrilateral RUBY is a rectangle.Which of the following statements MUST be true? Check all that apply: [] All four of the sides
1. 4 answers
2. 950 views
Writing to explain: The digit 5 is usually rounded up, but it can also be rounded down. How would you round the numbers in the
1. 2 answers
2. 703 views
complete the sequence of numbers4.25, 5, 5.75, _______, ______ ?
1. 11 answers
2. 1,895 views
Four runners ran the relay, Bill ran his lap in 22.738 seconds, Troy ran in 21.874 seconds, Grace ran in 20.32 second, and
1. 4 answers
2. 834 views
correct the following sentence:elvis our cat play with his toy and then he played on the scratching post There are 6 errors but
1. 2 answers
2. 644 views
How do you find the surface area of cones and cylinders?
1. 4 answers
2. 456 views
the directions for lemonade say to put 2 cups of liquid concentrate into one gallon of water. if olivia only wants to make one
1. 3 answers
2. 825 views
* I need help writing research essay.The topic is to write about an issue or problem that you want to change. Well, I am mostly
1. 4 answers
2. 523 views
In a garden, a birdbath 2ft 6 in. tall casts an 18-in. shadow at the same time an oak tree casts a 90-ft shadow. How tall is the
1. 3 answers
2. 2,173 views
What characteristics and talents in addition to these do you possess that will make you a great leader and member of the class
1. 6 answers
2. 469 views
A Jewlery box has length of 3 and a half, a width if 1 and a half, and a height of 2 units. What is the volume if the box I
1. 2 answers
2. 555 views
This piece focuses on the increase use of smartphones of youths in South Korea.Should I reword that phrase?
1. 2 answers
2. 1,208 views
n(n-1)-4How do I solve stuff like this?
1. 3 answers
2. 375 views
How much energy (in kilojoules) is released when 13.3g of steam at 114.5∘C is condensed to give liquid water at 67.0∘C? The
1. 4 answers
2. 1,634 views
Consider the resonance structures for the carbonate ion.O--C-O(-) l O(-) (-)O-C--O l O(-) (-)O-C-O(-) l l O How much negative
1. 4 answers
2. 785 views
Label each reactant according to it role or roles in the chemical reaction?Two different (OH-) + (HBr) ----> (HOH) + (Br-) (OH-)
1. 3 answers
2. 1,428 views
A box contains 8 blue balls, 3 white balls, and 5 red balls, and that we choose two balls at random from the box.What is the
1. 2 answers
2. 660 views
I have been trying to figure out how to solve multi-step equations. Such as 1/2x+1/4x=16. How do you solve these? I can't seem
1. 1 answer
2. 401 views
I'm a high school senior and I'm planning on applying to SBU. I have a 4.0 gpa, a 1690 on the SAT(am going to retake), a 24 on
1. 13 answers
2. 855 views
gold has a density of 19.30 g/cm3 . What si the mass of a bar of gold 15 cm x5 cm x 8 cm
1. 3 answers
2. 579 views
Water has a density of 1.0g/cm3. Aperson sits in a bath 150cm in length and 90 cm width. Thw water had a depth of 60cm befor the
1. 2 answers
2. 510 views
Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 175 boxes,
1. 4 answers
2. 2,208 views
In three successive years the price of the common shares of Bedrock Resources Ltd. fell 40%, 60%, and 70% ending the third year
1. 1 answer
2. 461 views
A 0.2800 g sample of an unknown acid requires 28.22 ml of 0.1199 M NaOH for neutralization to a phenolphthalein end point.a.)
1. 4 answers
2. 1,461 views
A 0.2800 g sample of an unknown acid requires 28.22 mL of 0.1199 M NaOH for neutralization to a phenolphthalein point.a.) How
1. 3 answers
2. 731 views
Mass 1 with a unknown mass starts at rest at the top of a frictionless from a height of 13 meters. It then slides down the
1. 1 answer
2. 485 views
1. Write a balanced molecular equation for the reaction of solid AgNO3 with aqueous NaCl. Be sure to include the correct number
1. 2 answers
2. 917 views
Write a proof.1. Prove: If the diagonals of a parallelogram are perpendicular, then the parallelogram is a rhombus. 2. Prove: If
1. 3 answers
2. 1,400 views
john invested $4000 into stocks(s) and bonds(b). The stocks earned 7% interest. the bonds earned 9% interest. if the investment
1. 2 answers
2. 503 views
If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under
1. 3 answers
2. 1,274 views
A 65.0 kg ice skater moving to the right with a velocity of 2.5 m/s throws a 0.15 kg snowball to the right with the velocity of
1. 1 answer
2. 804 views
Quadrilateral GHIJ is a scale drawing of quadrilateral ABCD with a scale factor r. Describe the following statements as always
1. 4 answers
2. 1,575 views
A car and driver weighing 7740 N passes asign stating “Bridge Out 27.7 m Ahead.” She slams on the brakes, and the car
1. 3 answers
2. 710 views
A piece of iron (Cp = 0.450 J/(gi°C)) that has a mass of 21.5 g and an initial temperature of 100.0°C is submerged in X g of
1. 3 answers
2. 597 views
What part of speech is idle in this sentence? "The kids are left idle with nothing to do."
1. 3 answers
2. 612 views
A strong lightning bolt transfers about 21.45 C to Earth. How many electrons are transferred? The elemental charge is 1.602 ×
1. 1 answer
2. 481 views
A charge q1 = 5 µC is at the origin, and a charge q2 = 4 µC is on the x axis at x = 6 m. Find the force on charge q2 . The
1. 3 answers
2. 1,015 views
We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 5.7
1. 1 answer
2. 724 views
A plane is flying horizontally with speed215 m/s at a height 2770 m above the ground, when a package is dropped from the plane.
1. 3 answers
2. 625 views
The variables x and y vary directly. When x=12, y=9. Write an equation that relates the variables.
1. 2 answers
2. 555 views
If I were to graph it, the vertex would be (3,-7) so what would my other point be?Write this equation : y =4(x-3)^2 -7 in
1. 3 answers
2. 431 views
describe the end behavior of the graph of the polynomial function. Then evaluate the ntion for x=-4, -3, -2, -1, 0, 1, 2, 3, 4.I
1. 4 answers
2. 1,630 views
list all the possible rational zeros of f using the rational zero theorem. Then find all the zeros of the function.f(x)=x^3+4x^2
1. 3 answers
2. 737 views
Identify the x-intercepts, local maximum, and local minimum of the graph off(x)=x^3+2x^2-13x+10 I am confused on where to begin.
1. 7 answers
2. 1,403 views
1. Two 20.-newton forces act concurrently on an object. What angle between these forces will produce a resultant force with the
1. 4 answers
2. 5,653 views
Between 4am and 5am, the water rises from 1.4m to 1.9m. Therefore, it rises 50 centimetres in 60 minutes. This means that the
1. 1 answer
2. 427 views
How would you simplify this equation??((1/x)-(1/y))/(y^2-x^2)
1. 5 answers
2. 258 views
The data in the following table describe the initial and final positions of a moving car. The elapsed time for each of the three
1. 3 answers
2. 1,102 views
One afternoon, a couple walks three-fourths of the way around a circular lake, the radius of which is 2.12 km. They start at the
1. 1 answer
2. 457 views
Vector Upper A Overscript right-arrow EndScripts has a magnitude of 75 units and points due west, while vector Upper B
1. 2 answers
2. 581 views
Calculate the amount of hydrochloric acid in 25cm3 of 0.100M HCl
1. 4 answers
2. 1,102 views
How do I show my work as to identify the vertex, axis of symmetry, and x intercepts?g(x)= x^2 +2x +1
1. 1 answer
2. 350 views
percent error formula= |experimental value -accepted value| / |accepted value| * 100%% error = |0.846 g/mL - 0.78948 g/mL| /
1. 1 answer
2. 456 views
A rocket blasts off from rest and attains a speed of 42.3 m/s in 13.8 s. An astronaut has a mass of 70.2 kg. What is the
1. 1 answer
2. 458 views
How do you find an endpoint with a midpoint and one endpoint?
1. 1 answer
2. 343 views
reciprocal function of (3x-5)/(x-2)
1. 1 answer
2. 365 views
How do you identify the vertex, the axis of symmetry, max or min value, and the domain and range or a function?y=-1.5(x+20)^2
1. 2 answers
2. 589 views
two blocks are moving down a ramp that is inclined at 30.0. Box 1(of mass 1.55kg) is above box 2(of 3.1kg) and they are
1. 2 answers
2. 487 views
A sprinkler system is designed to water 5/9 acre of land in 1/3 hour. How many acres of land can it water in 1 hour?
1. 1 answer
2. 399 views
4.) In coming to a stop, a car leaves skid marks 80m long on the highway. Assuming a DEceleration of 7.00 m/s^2 (m/s/s),
1. 35 answers
2. 5,776 views
We read a article called, "The Coming of the Pink Cheeks" by Chief Kabongo and Richard Barbe Baker. The question that we have to
1. 2 answers
2. 699 views
1. 2 / 9 + 1 /32. 1 / 7 + 3 /21 3. 2 /3 + 1/5 4. 1/4 + 2/3 5. 112 + 4 6 6. 1/2 + 2/ 5 7. 1/6 + 5 /12 8. 4/6 + 1/3 9. 1 / 5 + 1 /
1. 3 answers
2. 327 views
I'm completely drawing a blank on how to do this.A woman has $500,000 invested into two real estate properties. One yields an
1. 1 answer
2. 519 views
I'm completely drawing a blank on how to do this.A woman has $500,000 invested into two real estate properties. One yields an
1. 2 answers
2. 698 views

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