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Donna
Questions and answers by visitors named
Donna
Questions (316)
A scientist is plotting the circular path of a particle on a coordinate plane for a lab experiment. The scientist knows the path
4 answers
1,253 views
If equal masses of O2 and N2 are placed in identical containers at the same temperature, which of the following statements is
3 answers
1,733 views
To measure the static friction coefficient between a 1.6-kg block and a vertical wall, the setup shown in the drawing is used. A
5 answers
7,825 views
How many moles of potassium sulfate would you need to prepare 1200 grams of 5.0% sulfate (m/m) solution?
Calculate the volume of
4 answers
1,973 views
Calculate the volume of solution of 3.6 M NH4CI needed to prepare 350.0ml of 1.24 M NH4CI.
How many grams of ammonium chloride
3 answers
1,025 views
A daily lottery is conducted in which two winning numbers are selected out of 100 numbers. How many different combinations of
5 answers
4,871 views
Max is building a spherical model of earth. He is building his model using 2-inch long pieces of wood to construct the radius.
4 answers
1,162 views
Which trophic levels have the most biomass? Which have the most energy? Why?
The second law of thermodynamics requires that the
2 answers
755 views
What is a situation where you think it is especially important to make a positive first impression? How do you try to ensure you
2 answers
931 views
The kingston parks and recreation dept. is planning a new that will be 100 yards long and 85 yards wide. The dept. recommended
1 answer
536 views
Todd has indigo, yellow, pink, and red flowers in his green house. The ratio of indigo flowers to yellow is 3 to 5. The ratio of
2 answers
666 views
Can someone please help me with this problem?
An iron nail placed in a beaker with a solution of silver nitrate will cause pure
3 answers
1,673 views
Consider a system of notebook computers for a college math laboratory. The set of computers costs $10,000 and will be salvaged
1 answer
394 views
Consider a system of notebook computers for a college math laboratory. The set of computers costs $10,000 and will be salvaged
1 answer
474 views
Summarize the multifactorial model and how it relates to the diagnosis of illnesses.
Select two health problems Explain what role
2 answers
1,078 views
Summarize the multi-factorial model and how it relates to the diagnosis of illnesses.
3 answers
425 views
How do you plan to support your thesis with compelling arguments and counterarguments? For Homelessness and violence against
12 answers
743 views
Can you please help me with the following questions? please.
1. how much work do you do on a 25-kg backpack when you walk a
1 answer
499 views
1. how much work do you do on a 25-kg backpack when you walk a horizontal distance of 100 m?
-I got 2,500 J 4. if you friend
3 answers
1,808 views
My granddaughter needs help with a worksheet.
Use the factor-label method and include all work. Calculate the mass of 500.0cmx3
1 answer
319 views
A small spherical insulator of mass 8.00*10^-2kg and charge +6.00*10^-7C is hung by a thin wire of negligible mass. A charge of
2 answers
984 views
A small spherical insulator of mass 8.00*10^-2kg and charge +6.00*10^-7C is hung by a thin wire of negligible mass. A charge of
2 answers
729 views
If 3xy^3 - 4x = 10y^2, find y ' (x)
a) (4 + 3y^2)/(9xy^2 + 20y) b) (4 - 3y^2)/(9xy^2 - 20y) c) (3 + 4y^2)/(20xy^2 + 9y) d) (3 -
3 answers
608 views
You are carrying out the titration of 100.0 mL of 1.000M acetic acid with 1.000 M sodium hydroxide. Ka = 1.76x10^-5 of acetic
3 answers
847 views
For a reaction between sodium phosphate and strontium nitrate write out the following:
a) The balanced molecular equation b) The
4 answers
6,471 views
In lab, we did an experiment with electrochemical cells with solutions of ZnSO4, CuSO4, Al2(SO4)3 and MgSO4 and their respective
11 answers
5,275 views
Qualitively explain the effect of changing concentration of Cu^2+ using your experimental observations and the Keq values below
3 answers
3,495 views
Which solution would increase the osmotic pressure of water the most?
a) KBr b) NaCl c) MgCl2 d) glucose
2 answers
964 views
1. Find y'(x) when
xsecy - 3y sinx = 1 a) (3ycosx - sec y) / (xsec^2y - 3sinx) b) (3cosx - sec x) / (xsecytany - 3sinx) c)
2 answers
715 views
Find y'(x) when cos y - y^2 = 8
a) -siny - 2y b) - (1/sin y - 2y) c) 0 d) - (8/cos y - y) So if I implicitly differentiate: y'(x)
3 answers
477 views
Write rate law expressions?
2NOCl(g) --> 2NO(g) + Cl2(g) S2O3^2-(aq) + H^+(aq) --> HSO3^-(aq) + S(s) (Sulfur initially forms a
2 answers
1,100 views
The burning of methane in oxygen is a highly exothermic reaction. Yet a mixture of methane and oxygen gas can be kept
3 answers
2,868 views
The rate constant of a first order reaction is 4.60x10^-4/s at 350 degrees Celsius. If the activation energy is 104 kJ/mol,
4 answers
1,030 views
You are to evaluate how well the author used the points described in the text book about conformity and persuasion to explain
9 answers
663 views
Can you help me with these questions and explain why the answers are chosen. I think I have the answers but not quite sure how
1 answer
520 views
Do you believe certain attributes are universally attractive? What are these attributes? Do you believe on's sense of beauty is
3 answers
502 views
Describe how a person moves through each of the five stages of Levinger's ABC's of relationships model. As you write your
4 answers
595 views
Find the domain of the function
p(x)= x2 - 2x+7 The 2 next to the x is supposed to be an exponent.
6 answers
355 views
$ 45= 3 books 3 Pens
$ 177= 11 Books 12 Pens Cost of b= P=
3 answers
313 views
How do I know if a quadratic equation will have one, two, or no solutions
4 answers
404 views
I need help determining what impact the following has on force:
The factor of 2 is added to force and the mass is cut by 1/3. Can
4 answers
346 views
What is the difference between an instinct and a learned behavior?
2 answers
540 views
Your boss, the CEO of Wal Mart is interested in expanding operations into India. You have been asked to prepare a presentation
2 answers
583 views
What does a rooster do to defend itself when being attacked?
1 answer
257 views
Consider the following scenario: You own your company and would like to go global. Research a potential market and product to
2 answers
513 views
Is OB Mod a form of manipulation? And if it is, is it unethical for managers to manipulate the behavior of employees?
2 answers
954 views
A 30 kg girl and a 25 kg boy face each other on friction-free roller blades. The girl pushes the boy, who moves away at a speed
4 answers
1,890 views
If lynn can ytpe a page in p minutes, what piece of the page can she do in 5 minutes?
1 answer
285 views
The entire family chartered a boat for the day for $840. Unfortunately, one couple had severe colds and had to cancel, so the
1 answer
387 views
The three most commonly spoken languages in North America
2 answers
509 views
Which of the following statements regarding sex hormones is true?
A.Female sex hormones aren't involved in the primary
4 answers
905 views
What grammar is the "Yes" in this senence:
Yes, we can go to the store, but Bobby will need to stay home.
4 answers
438 views
Happiness in the contemporary world
5 answers
373 views
happiness where spiritual traditions are in conflict with science and contemporary life.
3 answers
423 views
We see indications that a child's role in perceptual development is passive when we observe? A. irrelevent information made
3 answers
381 views
Describe an item that you purchased and list three main reasons you purchased that product as oposed to another product. Then,
3 answers
407 views
Sean had 24 coloured pencils.
This is a mutiple choice question. He was given a new set of coloured pencils which contained twice
1 answer
483 views
Hi, I was wondering how would you translate this phrase into spanish?:
I met many new people today. Thanks much!
4 answers
569 views
How do you say 'deli' as in a grocery store deli? thanks
3 answers
343 views
Assuming that the base of a building is 330 ft. above sea level, give a total correction to sea level for the station pressure
1 answer
390 views
A 100.0 mL of 0.200 M methylamine, CH3NH2, is titrated with 0.100 M HCl. Calculate the pH after 70.0 mL of 0.100 M HCl has been
3 answers
1,854 views
Estimate the rate of freshwater mass production (kg s-1) b the melting of the North American ice sheet, assuming its melting
1 answer
382 views
need a website that shows polygons
1 answer
139 views
Two people are about to begin an 18000 km trip across Asia in a Land Rover. They know that each tire will last for exactly 12000
1 answer
371 views
A force of 400.0N is exerted on a 1,250N car while moving it a distance of 3.0m. How much work is done on the car.
4 answers
2,850 views
Estimate the solubility of lead (ll) chloride in grams per liter.
ksp= 1.7 x 10^-5
2 answers
823 views
What is the measure of the dent angle for a star-shaped polygon with 20 points and a dent angle of 12 degrees?
3 answers
516 views
A multiple choice answers for the question. What is the measure of the dent angle for a star-shaped polygon with 20 points and a
2 answers
958 views
explain how the meter, liter, and gram are related
1 answer
320 views
How can I construct a stem and leaf plot with the midterm test scores of the seventh-period typing class with the list below?
77,
2 answers
746 views
Consider the right circular cone shown. if the radius of the circular base remains the same and the height varies, what is the
3 answers
1,158 views
a right rectangle and a right triangle prism have the same height. If the lenght of the side of the rectangle base is twice the
1 answer
506 views
A right rectangle and a right triangle prism have the same height. If the lenght of the side of the rectangle base is twice the
6 answers
702 views
How can I construct a stem and leaf plot with the midterm test scores of the seventh-period typing class with the list below?
77,
1 answer
484 views
how to I figure how much copper is in 2.154 gram of copper sulfide?
3 answers
361 views
HOW MANY GRAMS OF MAGNESIUM ARE REQUIRED TO PRODUCE 2.154 GRAMS OF PRODUCT? STEP BY STEP EXPLAINATION
1 answer
414 views
how to figure out how many grams of magnesium are required to produce 2.154grams of product?
1 answer
394 views
how many grams of magnesium are required to produce 2.154 g of magnesium nitride?
1 answer
363 views
The boiling point of water at 756 mm Hg is 99.85 degree C. What mass percent of surcrose (C12H22O11) should be present to raise
4 answers
578 views
If equal masses of O2 and N2 are placed in identical containers at the same temperature, which of the following statements is
3 answers
442 views
An aqueous solution of hydrogen peroxide, H202 (MW=34.01amu), is labeled 10.0% by weight. What is the molal concentration of
1 answer
456 views
The boiling point of a liquid at atmospheric pressure is the temperature:
a. at which bubbles of vapor expand within the liqud b.
2 answers
668 views
A 0.05 molal aqueous solution boils at 373.102 K. What is the salt in question?
a. AlCl3 b. NaHSO3 c. MgCl2 d. NH4Cl e. NaCl I
3 answers
549 views
Farmers¡¦ Revolt
„h Create a bullet point list of the factors that led to political stalemate and the subsequent farmers¡¦
3 answers
693 views
How might a foundation in medical technology help you in fulfilling your education? How might a basic understanding of medical
3 answers
1,013 views
For a continuous random variable x, the population mean and the population standard deviation are 80 and 15 respectively. You
1 answer
434 views
Find the slope and the y-intercept of the line, 5x=8y+72
1 answer
342 views
Create a five to seven-point bullet point list of the factors that led to political stalemate and the subsequent farmer's revolt
2 answers
513 views
For the linear program
Max 2A + 7B s.t. A + B ¡Ý 12 2A + 2 B ¡Ü 26 B ¡Ý 1 A, B ¡Ý Which of the following would be found
1 answer
397 views
Which of the following mathematical relationships could be found in a linear programming model? Choose YES if the relationship
4 answers
1,112 views
Which of the following mathematical relationships could be found in a linear programming model? Choose YES if the relationship
3 answers
946 views
For the linear program
Max 2A + 7B s.t. A + B greater than or equal to 12 2A + 2 B less than or equal too 26 B greater than or
2 answers
589 views
Max 2A + 7B
s.t. A + B greater than or equal to 12 2A + 2 B less than or equal too 26 B greater than or equal to 1 A, B greater
1 answer
459 views
Which of the following mathematical relationships could be found in a linear programming model? Choose YES if the
relationship
4 answers
754 views
For the standard normal random variable Z, compute the following probabilities. For the following problems, use four decimal
1 answer
457 views
two of the forms of a linear equation are standard form and slope-intercept form. explain when each one is more useful
1 answer
450 views
how do I solve:
-1 cubed-(-1)to the fourth +(-1) to the fifth - (-1)to the sixth thanks
3 answers
359 views
What is an inequality
6 answers
310 views
You are planning to spend no less than $8000. and no more than 12,000 on your landscaping project. Write an inequality that
4 answers
884 views
I have been trying this on my own and just want to know if this is right are not
2. Suppose that the linear equation y = 0.3x +
4 answers
577 views
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