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Jerry
Questions and answers by
Jerry
Questions (201)
How many moles of each ion are present, per liter, in a solution that is labeled “0.221 M
CaCl2 ”? CaCl2 Ca +2 + 2 Cl-
4 answers
1,113 views
Select the correct answer.
An investment banking house conducted a survey to determine how two of its proposed investment plans
2 answers
187 views
Kim, Mei and yante collect stamps. Kim and Mei have 220 stamps more than Yanti. Yanti and Mei have 140 stamps more than Kim. Kim
7 answers
4,307 views
A 20g mass with charge q=+8C hangs from a spring of stiffness k=50N/m. If an infinite plane with charge density sigma=+3C/m^2 is
3 answers
703 views
A loudspeaker emits energy in all direction at the rate of 1.5 J/s. What is the intensity level at a distance of 20m?
3 answers
482 views
I'm in a Grade 12 Data Management Course. The Current unit is Factorials and Permutations. I'm having a trouble with this
3 answers
632 views
Describe the climate and physical characteristics of that biome and the types of organisms that live within it. Give examples of
2 answers
737 views
How much electric charge is needed to produce 1.000kg of Na metal from the Na+ ions in NaCl?
You need one electron per atom. How
1 answer
382 views
A current of 2.50 A is passed through a solution containing Cu+2 ions for 4.00 hours. Calculate the mass of Cu atoms that form
2 answers
728 views
(2x^sqrt of 2x)(3^sqrt of 5x)
1 answer
264 views
sqrt of x-1=x-3
square both sides. Gather terms, factor or use the quadratic equation. I will be happy to critique your work.
1 answer
372 views
How did Jim Crow laws affect the economy?
2 answers
579 views
how do I work a exponential and logarithmic function on a TI83?
1 answer
335 views
In 1992, the life expectancy of males in a certain country was 69.8 years. In 1999, it was 72.6 years. Let E represent life
1 answer
467 views
Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling 40 miles per hour. Train B is
4 answers
589 views
What does copper react with when heated and what is formed as a result?
(When you put copper underneath a fire, would the copper
2 answers
560 views
can not unscramble this math word
mmttuoaeive
1 answer
399 views
can not unscramble this math word
sserwmt
1 answer
381 views
I did a lab in chemistry in which 15-mL jumbo Beral pipets with acetone was heated in boiling water until all of the liquid
1 answer
786 views
A 156.5 g piece of stainless steel was heated to 510 C and quickly added to 25.11 g of ice at -30 C in a well-insulated flask
5 answers
820 views
A 156.5 g piece of stainless steel was heated to 510 C and quickly added to 25.11 g of ice at -30 C in a well-insulated flask
4 answers
530 views
Evolutionary theories often emphasize that humans have adapted to their physical environment. One such theory hypothesizes that
3 answers
1,460 views
Twenty students randomly assigned to an experimental group receive an instructional program: 30 in a control group do not. After
2 answers
674 views
Do students at various colleges differ in how sociable they are? Twenty-Five students were randomly selected from each of three
2 answers
666 views
Four research participants take a test of manual dexterity (high scores mean better dexterity) and an anxiety test(high scores
2 answers
539 views
Factor:
4x^2-12x+9
1 answer
318 views
Find the sum of all n exterior angles of a n-sided convex polygon, where n is any positive integer larger than 3. Show all the
1 answer
401 views
what does homeostasis means?
1 answer
653 views
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to
1 answer
465 views
What are some of the health problems associated with anorexia nervosa, bulimia nervosa, and binge-eating disorder? Explain, from
4 answers
938 views
What are some of the health problems associated with undernutrition? Explain the cycle of malnutrition. Who does it impact?
3 answers
511 views
For the reaction: H2(g) + I2(g) 2HI(g) , Kc = 12.3 at some temperature T. If [H2] = [I2] = [HI] = 3.21 x 10-3 M at this
3 answers
2,025 views
Twenty-seven students averages 70 on their midterm. Could 21 of them have scored about 90?
3 answers
568 views
product of 45% and some number
1 answer
282 views
Working alone it takes Jerry 9 hrs to mop a warehouse. Ruth can mop the same warehouse in 10 hrs. If they worked together how
2 answers
1,033 views
Need to create a poster describing the persuasive technique bandwagon. How do I do it?
1 answer
475 views
Describe what the graph of interval [-4,10] looks like.
3 answers
379 views
A grocer gets food from three suppliers. They deliver every 5 days, 6 days and 7 days, respectively. All three came today. When
3 answers
390 views
How do you do this?
y-5/y+2 = 1/7
1 answer
260 views
Help!
g/r+g - g/r-g
1 answer
348 views
what is x squared plus 12x plus 11 equals
3 answers
318 views
The closing price of Schnur Sporting Goods, Inc., common stock is uniformly distributed between $16 and 29 per share.Exercises
Wh
2 answers
577 views
I conducted the synthesis of an Alum experiment in my lab last week and I'm working on my report. I'm almost done expect I don't
3 answers
669 views
give exact and approximate solutions to three decimal places
(x-5)sq = 18
3 answers
800 views
please help!
The width of a rectangle is 4ft less than the length. The area is 12 ft sq. Find the length and the width.
1 answer
413 views
solve for x
x+1/x=-7/x-12
1 answer
302 views
How do I calcualte and what would my titration curve look like for a 25mL 0.1M H3PO4 solution titrated with 0.1M NaOh.
The
1 answer
478 views
Factor completely
112r^2+392rp+343p^2 Please help
1 answer
327 views
Find the GCF
-30a^4, 5a^5
1 answer
356 views
In the Michaelis-Menten equation, KM = Ks only when the equilibrium assumption is valid. Which of the following conditions would
1 answer
386 views
g(x) = 6
___ 8-3x is the domain {x|x real number and ? = 0 >=8/3 = 8/3 =6 My answer is >= 8/3 I hope I am right!
1 answer
294 views
-2x> 1/9
This is multiplication -2/1 +1/2x > 1/9 +1/2 {x|x < 1/11 Is this correct?
3 answers
307 views
z+y for z = 39 and y=11
__ 10 simplify 39 +11 ______ 10 this is correct?
1 answer
264 views
soybean meal is 12 % protein and corn bean meal is 6%protein what it takes to make 240 IB mixture 7% protein?
1 answer
458 views
How does the project audit differ from the performance measurement control system?
3 answers
519 views
How do you remove everything to the right of the decimal place in Access?
1 answer
321 views
Hi. I realize that Photoshop has features that are specifically designed to create and save images that meet web standards.
1 answer
380 views
Nine rights are necessary to purchase one share of Fogel stock at $50. A right sells for $4. The ex-rights value of Fogel stock
3 answers
543 views
When heated, lithium reacts with nitrogen to form lithium nitride:
6Li+N2 --> 2Li3N What is the theoretical yield of Li3N in
4 answers
2,004 views
A beaker contains 250.0 mL of a 1.00 M HCl solution. How many moles of the acid would remain in the solution after 0.199 moles
1 answer
400 views
A 1.009-g mixture of the solid salts Na2SO4 (molar mass=142.04g/mol) and Pb(NO3)2 (molar mass=331.20g/mol). The precipitate was
2 answers
594 views
Why is it important to learn what sample size was used in a study in which no statistica difference was found?
1 answer
377 views
the local school system asks to submit a proposal to do pre-employment physicalsfor 60 bus drivers. What financial or accounting
1 answer
437 views
A baseball, hit 3 feet above the ground, leaves the bat at an angle of 45' and is caught by an outfielder 3 feet above the
2 answers
957 views
M/5=30 M=?
1 answer
217 views
100= 1/2 50 v* v=? *squared*
10=(50-v)/4 v=?
1 answer
319 views
A hot-air balloon is rising straight up with a speed of 5 m/s. A ballast bag is released from rest relative to the balloon when
2 answers
597 views
Baseball player A bunts the ball by hitting it in such a way that it acquires an initial velocity of 1.3 m/s parallel to the
4 answers
4,130 views
Oxidation State numbers
For Fe3+ i got 3+ b/c Oxidation state monatomic ion = ionic charge and i got that answer wrong. i am
2 answers
581 views
Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no
6 answers
15,015 views
How to solve the equation:
36x-15y+50z=-10 2x+25y=40 54x-5y+30z=-160
2 answers
504 views
A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle:
2 answers
537 views
I don't understand how to set up the triple integral for #26.
LINK: h t t p : / / g o o . g l / 5 k C L
1 answer
344 views
I'm not sure how to do #22.
LINK: h t t p : / / g o o . g l / P 0 S e
1 answer
261 views
a)Approximate root 26 by using the linearization of y= root x at the point (25,5) Show the computation that leads to your
2 answers
1,027 views
Complete the table below:
Enter all letters containing appropriate descriptions for each of the equations below. a. precipitation
11 answers
811 views
How do you dilute 100mL of 20ppm Fe3+ to 1,2,4,6,8 ppm, 50mL each?
1 answer
415 views
a driver of a car going 95.0km/h suddenly sees the lights of a barrier 35.0 m aheadd. It takes the driver 95 s before he applies
2 answers
840 views
how many half-lives of radon-222 have passed in 11.46 days?
2 answers
897 views
The Lifetimes of a certain brand of photographic light are normally distributed with the mean of 210 h and a standard deviation
2 answers
1,194 views
A compound is 54.52% C, 9.15% H, and 36.32% O by mass. What is the empirical formula?
The molecular mass of the compound is 132
2 answers
896 views
Complete combustion of 8.00 g of hydrocarbon produced 26.0g of CO2 and 7.99g of H2O. What is the empirical formula for the
3 answers
1,459 views
Calculate the percent composition by mass of each element in Al(OH)3
Use at least 3 significant figures. %Al = %O = %H=
2 answers
1,197 views
how many grams of F are in 335 g of CaF2?
3 answers
1,202 views
What is the empirical formula of a compund composed of 3.25% hydrogen(H), 19.36% carbon(C) and 77.39% oxygen(O) by mass?
2 answers
532 views
An unknown compound contans only C, H, and O. Combustion of 5.70 g of this compound produced 11.4g of CO2 and 4.66g of H2O. What
3 answers
905 views
100 students were asked whether they are taking psychology or biology. 61 were taking pyschology, 18 were taking both and 12
4 answers
1,423 views
08/09/2005 Physics
A crane is lifting a 200 pound object. The crane boom is 50 ft long. The boom forms an 85 degree angle with
2 answers
935 views
A comet is traveling towards the earth. The comet has a mass of 5.50E+12 kg and a radius of 323 m. The comet is traveling with a
1 answer
971 views
There are two particles (1 and 2) that are moving around in space. The force that particle 2 exerts on 1 is given by:
F21(t)=Fx*e
2 answers
848 views
Suppose the time it takes for a purchasing agent to complete an online ordering process is normally distributed with a mean of 8
4 answers
1,456 views
a machine fills containers with a standard deviation of filling weights of 1.5. calculate the mean weight if only 4 % of the
2 answers
1,091 views
Answer the following questions for a mass that is hanging on a spring and oscillating up and down with simple harmonic motion.
3 answers
1,198 views
Romeo takes a uniform 15.0-m ladder and leans it against the smooth (frictionless) wall of the Capulet residence. The ladder's
1 answer
610 views
Firm A has $10,000 in assets entirely financed with equity. Firm B also has $10,000 in assets, but these assets are financed by
1 answer
637 views
At a certain temperature, the Kp for the decomposition of H2S is 0.832
H2S (g) <-- --> H2 (g) + S (g) Initially, only H2S is
13 answers
1,316 views
Which of the following reactions have a positive ΔSrxn? Check all that apply.
A(g) +B(g) -----> 3C(g) A(g)+ B(g)------> C(g) 2A
6 answers
18,482 views
When the oxide of generic metal M is heated at 25.0 °C, only a negligible amount of M is produced.
O2M(s) ----> M(s) +O2(g)
10 answers
10,501 views
A critical reaction in the production of energy to do work or drive chemical reactions in biological systems is the hydrolysis
15 answers
12,517 views
Find the frequency in Hertz (Hz) for the following situations:
a) a basketball team scores 40 points in 300s b) a tuning fork
4 answers
407 views
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