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August 20, 2014

Homework Help: Science: Scientists

Recent Homework Questions About Scientists

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Math
A scientists income over 3 years was $72,000, $76,000, and $77,000. He won an award the next year, so his income was $1,080,000. By how much does the outlier increase the scientist mean annual income? Pleas help me and work out the problem
Tuesday, January 10, 2012 at 9:04pm

English
Thank you very much for your corrections. Here are some more sentences I'd like you to check. 1) An example of a desolate place is Frankenstein’s laboratory, where the scientist is confined in order to create the monster. 2) Frankenstein is not set in a dark castle ...
Sunday, January 8, 2012 at 5:54pm

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Tuesday, December 27, 2011 at 4:22pm

chemistry
A scientist collects a sample of carbon dioxide that contains 1.5 x 1025 molecules of CO2. In grams, what is the mass of the sample?
Tuesday, December 20, 2011 at 1:09pm

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Saturday, December 17, 2011 at 10:37pm

English
I left out the last two sentences. Thank you. 1) Walton is the double of Frankenstein since he manifests the same ambition, the wish to overcome (go beyond is possible?) human limits in his travelling towards the unknown. 2)Frankenstein and his creature are complementary: they...
Tuesday, December 13, 2011 at 3:10am

science
who would be considered to be the "first ocean scientist"?
Sunday, December 11, 2011 at 2:57pm

Chemistry
A researcher is studying the decomposition of A as shown by the general reaction below: 2 A(g) 4 B(g) + 2 C(g) Initially, the scientist fills an evacuated 1.772 L flask with 3.710 x 10-1 moles of species A. Upon equilibrium, it is determined that the concentration of A is 4....
Friday, December 9, 2011 at 8:08pm

scientist
How could measuring the orbit of a comet help scientists understand when it will next be visible from earth
Thursday, December 1, 2011 at 4:46pm

English
Which of the following publications are both listed under the "Magazines" results? A. Astronomy and Science B. Odyssey and Natural History C. Science News and Earth Island D. The Economist and American Scientist
Tuesday, November 29, 2011 at 1:52pm

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Monday, November 28, 2011 at 1:08pm

Physics
A weight with mass m lies on a surface with no friction. The weight is also connected to a spring with springconstant k and then the weight is driven with outer force F(t)=F0sin(Ωt). There is a friction in the spring and he‘s described with –bv(t). With a help ...
Wednesday, November 16, 2011 at 9:51am

algebra
a scientist has a 25% acid solution.how many liters of each does the scientist need to make 15L of a solution that is 28%.write a system of equations and solve using any method.
Thursday, November 10, 2011 at 12:48am

Introduction to Psychology
As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group B will sleep in total...
Tuesday, November 8, 2011 at 8:34pm

scientist
what are some background information for the stoichiometry lab involving hcl and naco3
Tuesday, November 8, 2011 at 6:32pm

Introduction to Psychology
As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group B will sleep in total...
Tuesday, November 8, 2011 at 11:05am

Psychology
As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group B will sleep in total...
Monday, November 7, 2011 at 1:25pm

political science
In need of help on my political science homework please help with these questions Only these questions left! One reason why the US has only 2 major parties is that it has: A. insufficient opportunities to bribe candidates B. too much involvement by religious groups C.single-...
Sunday, November 6, 2011 at 3:59pm

PLZ ANSWER CHEM QUESTION
a chemist reacted 64 grams of Ru with O2. This reaction produced 160 grams of ruthenium oxide and 4 grams of leftover O2. How much of the reactants would this scientist need to make 320 grams of the product with no leftover O2? Ru + O2 = RuO2 + O2 leftover
Thursday, November 3, 2011 at 10:29pm

Science
-What is Pot of Gold? -What did inferences could scientist make from Pot of Gold on Mars?
Wednesday, November 2, 2011 at 9:01pm

Chemistry
A mettallurgist decided to make a special alloy. He melted 30 grams of Au(Gold) with 30 grams of Pb. This melting process resulted to 42 grams of an Au-Pb alloy and some leftover Pb. This scientist wanted to make 420 grams of this alloy with no leftovers of any reactants. how ...
Monday, October 31, 2011 at 8:53am

science
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 350 of a solution that has a concentration of ions of 0.500 ?
Friday, October 28, 2011 at 10:58pm

science
why do scientist only change one varieble at a time during a experiment ?
Thursday, October 20, 2011 at 10:29pm

Chemistry
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 625 of a solution that has a concentration of ions of 0.800
Thursday, October 13, 2011 at 5:04pm

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 400 mL of a solution that has a concentration of Na+ ions of 1.00 M?
Thursday, October 13, 2011 at 1:59pm

Physical Science
True or False. To a scientist, work is done when a force is exerted through a distance.
Tuesday, September 27, 2011 at 5:31pm

science
a scientist has two samples of a substance. both samples have the same temperature. one sample has a mass of 10 g. the other sample has a mass of 20 g. compare the average kinetic energy and total kinetic energy of the particles in each sample.
Monday, September 26, 2011 at 7:54pm

REGENTS(PRACTICE)
A scientist wants to determine the best conditions for hatching brine shrimp eggs. In a laboratory, brine shrimp hatch at room temperature in glass containers of salt water. The concentration of salt in the water is known to affect how many brine shrimp eggs will hatch Design...
Wednesday, September 21, 2011 at 4:41pm

scientist
scientists do their experimental tests more than once,so they can reduce the effects of chance errors.This is called conducting
Tuesday, September 20, 2011 at 7:57pm

dayli science
write one or two sentences that contain these words:hypothesis,solutin,prolem,scientis​t
Tuesday, September 20, 2011 at 2:32pm

scientist
why do scientists do experiments
Wednesday, September 14, 2011 at 4:56pm

scientist
Which of the following BEST describes the theory of natural selection?
Sunday, September 11, 2011 at 1:21pm

science
what is the 14 letter word called conducting ____________, its when scientist reduce effects for chance errors.
Wednesday, September 7, 2011 at 10:43pm

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Sunday, September 4, 2011 at 8:38pm

Biology
1. A medical scientist is designing an experiment to test the results of a new drug that she hypothesizes will greatly reduce and possibly eliminate the side effects of a new cancer treatment. If this experiment is to be set up correctly, she must (A) divide the patients into ...
Wednesday, August 31, 2011 at 9:46pm

science
scientist do their experimental test more than once so they can reduce the effects of chance errors this is called conducting what
Wednesday, August 31, 2011 at 7:35pm

scientist
Which is the best reason for the smaller number of drone bees compared to the number of worker bees in a beehive?
Saturday, August 27, 2011 at 10:00am

Literacy 4
Please check my work. Thank you. 1. Government documents in a library are classified according to which of the following schemes? A. Superintendent of Documents B. Government Printing Office C. Dewe Decimal D. Library Of Congress Answer #1 is A 2. You're using the ...
Friday, August 26, 2011 at 1:33pm

psychology
HYPOTHETICAL EXPERIMENT: You, as an eager young behavioral scientist, have noted that many people don't wash their hands when they are in a public rest room, unless there is someone there who they believe is watching them. Because you are very aware of the public health ...
Thursday, August 18, 2011 at 7:26pm

scientist
How do I turn up the sound on a stereo without turning the volume button up?
Monday, August 15, 2011 at 8:19pm

History
Can some one help me with these questions? Because Japan was hit by the worldwide economic depression in the 1930s, military leaders were able to gain power. Question 1 answers True False Question 2 text Question 2 After Japan withdrew from the League of Nations they aligned ...
Tuesday, August 9, 2011 at 7:20pm

biology
A scientist wishes to determine how effective a vaccine is in protecting rats against a contagious disease. What experimental procedure should the scientist use to determine the vaccine's effectiveness?
Sunday, July 31, 2011 at 5:41pm

scientist
What is the law which states that volume and temperature are directly related?
Monday, July 25, 2011 at 7:56am

Math
Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long does it take for the ball to hit the ground (H=0)? (Use the quadratic formula to solve this problem, ...
Sunday, July 24, 2011 at 2:49pm

science
which of the following topics involving bees would an environmental scientist consider to be the most important ? 1. the effects of insecticides on bees and subsequently the pollination of agricultural crops 2. the amount of honey production needed for export to another ...
Monday, July 11, 2011 at 2:15pm

English - Native speakers
Can we say : Scientist have a little hope of finding a cure for cancer or little hope.Can we say both? A little means positive and little negative
Thursday, June 23, 2011 at 10:19am

English
Can you please check if these sentences are correct? In particular, I'd like you to help me find an introductory sentence to my paragraph and a proper conclusion (with reference to the theme of the double). 1) Explore the theme of the double as it occurs in the works of ...
Monday, June 20, 2011 at 11:29am

scientist
What is the effect of the temperature. Outside on attendance at westside
Wednesday, June 15, 2011 at 10:23am

Psychology
As a scientist, Carl is concerned with the intensity of lights in the modern human environment. In his research project, Group A consists of volunteers who have agreed to sleep each night for a week with a 150 watt light bulb hanging over their bed. Group B will sleep in total...
Sunday, June 5, 2011 at 7:50pm

English
can someone overlook my answers to help with the questions that are wrong at let me know which ones are right. Bold = my answers I chose (right) Wind can create alterations in the surface layers of rock. Wind Is one cause of erosion. Which of these sentences combines the ...
Tuesday, May 31, 2011 at 8:32pm

chemistry
now lets say that this scientist wants to make 50 mL of a 0.250 M KC solution. How much of the 1.00 M "stock" solution whould he use
Wednesday, May 25, 2011 at 4:54pm

chemistry
suppose that a scientist needs to make 100 mL of a 1.00 M solution. What mass of solid KC needs to be used
Wednesday, May 25, 2011 at 4:53pm

grammar
proper adjectives how do you put these proper adjectives in sentences. 1. a hearing in Congress 2. an ancient theater in Greece 3. the moons around Mars 4. beaches in Israel 5. a scientist from England 6. a colorful scene in Paris 7.the people of Sudan 8.teachings of Islam 9. ...
Friday, May 13, 2011 at 8:00pm

chem
A scientist wants to make a solution of potassium phosphate, K3PO4 for a lab experiment. How many grams of K3PO4 will be needed to produce 575ml of a solution that has a concentration of K+ ions of 1.4M.
Tuesday, May 10, 2011 at 11:04am

english
(I need to complete an out line with a introduction and a thesis sentence or statement but I can find what I am looking for here is the article) This question expresses a commonly held (by women) negative stereotype about guys of the male gender, which is that they cannot find...
Saturday, May 7, 2011 at 2:50pm

biology
14 points Save A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and analyses the Carbon ...
Saturday, May 7, 2011 at 9:01am

science - biology
A photosynthesis experiment uses Chlorella to track the route taken by 14C in photosynthesis. The 14C is provided from CO2 and no new sources of CO2 are available. After the experiment the scientist extracts all of the starch produced and analyses the Carbon present. She ...
Saturday, May 7, 2011 at 8:57am

english
ndicate whether a sentence is a run-on or correct. If the sentence is a run-on, correct it using your knowledge of coordination and subordination. 1. My mother is very politically conservative; she’s written in King George III for president in the last two elections. 2. ...
Friday, April 29, 2011 at 9:22pm

scientist
how can u help me with terrestrial and aquATIC BIOMES
Monday, April 25, 2011 at 10:12pm

reading
what this the answer for this question We can conclude from paragraph a)theories are often revised. b)theories are never modified. c)theories are always changed. d)theories are mostly illogical. The concept that the Earth is a sphere can be traced back 2,500 years to the Greek...
Tuesday, April 19, 2011 at 5:56pm

scientist
what is ensebles?
Saturday, April 16, 2011 at 6:47am

english
Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?
Wednesday, April 6, 2011 at 7:18pm

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, \rm Na_3PO_4, for a laboratory experiment. How many grams of \rm Na_3PO_4 will be needed to produce 250 mL of a solution that has a concentration of \rm Na^+ ions of 0.600 \it M?
Wednesday, March 30, 2011 at 6:47pm

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 500 mL of a solution that has a concentration of Na+ ions of 0.700 M
Sunday, March 27, 2011 at 5:25pm

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 450 mL of a solution that has a concentration of Na+ ions of 0.700 M
Sunday, March 27, 2011 at 4:59pm

English
I have some doubts on how to rephrase a few sentences on Dr. Jekyll and Mr Hyde. I hope you can have a look at them. 1)The story is told from the point of view of Mr. Utterson, a London lawyer and friend to the brilliant scientist Dr Henry Jekyll. 2) After relating a ...
Monday, March 14, 2011 at 6:21pm

Grammar
My aunt works at Woods Hole as a scientist. What are the nouns in the sentence? Is is aunt, Woods hole and scientist?
Wednesday, March 9, 2011 at 6:27pm

English
Can you help with writing a paragraph using all these words? Scientist, encourages, limitations, robotics, asthma, and fit. All the words must be in the paragraph.
Wednesday, March 2, 2011 at 1:23pm

college algebra (maths 112)
To conduct a new experiment, a scientist needs a 23% salt water solution. How much of a 13% solution must be mixed with 45 quarts of a 32% solution to get the proper solution?
Thursday, February 24, 2011 at 8:01pm

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Thursday, February 24, 2011 at 7:43pm

math 12
In a population of 328 snakes at a zoo, it is known that 162 are female. A scientist selected 50 snakes at random to run some tests. What is the probability that the scientist will select at least 30 female snakes?
Sunday, January 23, 2011 at 11:07am

math 12
In a population of 328 snakes at a zoo, it is known that 162 are female. A scientist selected 50 snakes at random to run some tests. What is the probability that the scientist will select at least 30 female snakes?
Wednesday, January 19, 2011 at 6:20pm

scientist
hi i am doing a science fair project.The project is testing memory. The problem is i am not sure how to give the memory test. the article that i found says to give the people that im doing the project on single digit numbers then double digits, but im not sure how to construct...
Thursday, January 13, 2011 at 1:01pm

math
What were the headlines after a mad scientist trained two eggs to attack a candy store with sharp sticks?
Wednesday, January 12, 2011 at 8:05pm

main ideas study unit
scientist generally agree that earth is getting warmer due to what call the green house effectt. a greenhouse used for plant stay warm because sunlightand heat come through the glass roof are mostly trapped by the grass something like that happen on earth. the atmosphere act ...
Wednesday, January 12, 2011 at 12:38pm

scientist
Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
Wednesday, January 12, 2011 at 11:27am

English 1
Underline the correct pronoun in parentheses. 1. Many so-called Founding Fathers are famous one or two of (his, his or her, their) accomplishments, but anyone who knows (his, his or her, their) history knows that Franklin is known for many things, including (his, her, his or ...
Wednesday, January 5, 2011 at 7:16am

English 1
1. Many so-called Founding Fathers are famous one or two of (his, his or her, their) accomplishments, but anyone who knows (his, his or her, their) history knows that Franklin is known for many things, including (his, her, his or her, their) inventions. their, his or her, ...
Tuesday, January 4, 2011 at 11:49am

biology /check please
Use each terms below just once to complete the passage. (1)experimental results ,(2) experiment(s), (3)hypotesis ,(4) laws ,(5) scientific journals , (6)theory ,(7) valid ,(8) verify. When (experimental) results are reported in (scientific journals) other scientits may try to...
Thursday, December 23, 2010 at 2:02am

computer
Synex industries are a company based in Sri Lanka which is excels in nuclear waste management. The company profile is given below. Metric Values Company Name Synex Industries Total Number of Employees 1027 Nationality of Employees Russian, Chinese, German and Sri Lankan Levels...
Thursday, December 23, 2010 at 1:16am

Science (Energy)
Ok i have done 2 experiments (See below) the question i need help with is i need to explain the difference for the two combustions and i just dont know, please help me and thankyou for your help. The Combustion Of Marshmallows Aim To investigate how much energy is transferred ...
Friday, December 17, 2010 at 8:19am

Bio
As a scientist, you are assigned the task of finding out if the disappearance of a particular fish species from a lake in the Northwestern United States is due to acid rain resulting from industrial air pollution. Identify alternative hypotheses that could explain the ...
Wednesday, December 8, 2010 at 3:22pm

Bio
As a scientist, you are assigned the task of finding out if the disappearance of a particular fish species from a lake in the Northwestern United States is due to acid rain resulting from industrial air pollution. Identify alternative hypotheses that could explain the ...
Wednesday, December 8, 2010 at 9:21am

Science
how could measuring the orbit of a comet help scientist understand when it will next be visible from earth
Thursday, December 2, 2010 at 11:39pm

math
what were the headlines after a mad scientist trained two eggs to attack a candy store with sharp sticks
Tuesday, November 30, 2010 at 5:17pm

English
Can you please check these sentences on Shelleys's Frankenstein? Thank you very much for your help. 1) The monster can be compared to Rousseau’s primitive man, since he comes to life free from social constrictions and unspoilt by civilization. 2)However, the monster ...
Monday, November 29, 2010 at 10:20am

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na_3PO_4, for a laboratory experiment. How many grams of Na_3PO_4 will be needed to produce 550 mL of a solution that has a concentration of Na^+ ions of 0.500 it M?
Thursday, November 11, 2010 at 8:58pm

biology
wherever in the universe life exists, some of those life forms must be colored. why would a scientist make this statement.
Monday, November 8, 2010 at 11:30pm

AP Chem
Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...
Monday, November 1, 2010 at 1:04am

11th grade AP Chemistry
Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...
Saturday, October 30, 2010 at 3:26pm

psychology
It is the proper role of a psychological research scientist to: question data. make safe predictions. keep research methods accessible only to those involved in the research. avoid making predictions.
Saturday, October 30, 2010 at 2:00pm

statistics
there are 100 males and 100 females in a club. 80 of the men and 10 of the women are scientists. what is the probability one person is chosen to interview p(female scientist)
Sunday, October 17, 2010 at 7:45pm

science
why can a scientist use boiling point or melting point to identify an unknow substance?
Monday, October 11, 2010 at 5:40pm

Chemistry
A scientist has 0.46 mL of a solution. How would she convert this volume to microliters?
Sunday, October 10, 2010 at 2:12pm

Science
How sediments,fossil, and ice core record Earth's geologic history? It record Earth's geologic history by giving scientist an idea of when certain climates or events happen.(Is this a good answer?) Thanks
Wednesday, October 6, 2010 at 7:20am

10th grade
scientist needs 5L of 12% solution. She has on 10% and 17% solution. How much of each does
Friday, October 1, 2010 at 6:36pm

chemistry
A scientist wants to make a solution of tribasic sodium phosphate, , for a laboratory experiment. How many grams of will be needed to produce 400 of a solution that has a concentration of ions of 1.20 ?
Wednesday, September 29, 2010 at 6:45pm

high school
How does a scientist reduce the frequency of human error and minimize a lack of accuracy? a.Take repeated measurements. b.Use the same method of measurement. c.Maintain instruments in good working order. d.all of the above
Tuesday, September 28, 2010 at 12:25pm

science
how do scientist often name ecosystem?
Monday, September 27, 2010 at 8:52pm

science
what is an example of a question a scientist could test and how would you test it?
Monday, September 27, 2010 at 8:14pm

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