Science

Recent Questions

Physical science
N2+3H2>2NH3 that occurs at STP What volume of NH3 gas will form if 3g N2 react with enough H2?

Maths literacy.Geography.Business Studies.Life Orientation and Languages
Can i did agriculture and Environmental science on those subjects?

Science
Patrick and Spongebob love to blow bubbles! The ads claim that Super Bubble soap will produce bubbles that are twice as big as regular bubble solution. Sample is made with 5 oz of Super Bubble soap and 5 oz of water, while the other is made with the same amount of water and 5 ...

algebra
complete the table to answer 1-4. i don't put a table here because i can't and it's time consuming, so i made up word problems for the table. 1. for the abc company, you own 5 shares and lost $2 on monday, gained $5 on tuesday, and lost $1 on wednesday. did your net gain or ...

Computer science
need help how do this program. Use the top-down modular approach and pseudocode to design a suitable program to solve it. Alberta Einstein teaches a business class at Podunk University. To evaluate the students in this class, she has given three tests. It is now the end of the...

Science - physics
a jet airplane lands with a speed of 122 m/s and can accelerate uniformly at a max rate of - 6.2m/s2 as it comes to a rest. can this airplane land in 1.0 km runway

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...

english
How does the episode with Victor's father and the episode with the lightning strike as described in this excerpt function similarly? They both involve the reading of books about science. They both involve interactions with parents or guardians. They both suggest a certain ...

english
All that had so long engaged my attention suddenly grew despicable. Which of the following assertions is supported by this text? The forces of nature are not predictable enough for the narrator. The forces of nature are responsible for the shift in focus of the narrator. The ...

Science
The type of graph used to show how a part of something relates to the whole is which of the following? A)circle graph B)bar graph C)line graph D)direct proportion My Choice is A

science
A solution is prepared by dissolving 0.490 g of an unknown compound in 50.00 mL of water. The freezing point of the solution is –0.201°C. Assuming the compound is a non-electrolyte, what is the molecular mass of the compound? Use 1.00 g/mL as the density of water.

Science
Why is the use of the inquiry process a practical way to approach science?

Science
What elements have the highest ionization energy and why?

SCIENCE!
the second worksheet of SCIENCE! for today performing an experiment read the following statements and then answer the questions. 1. a scientist wants to find out why sea water freezes at a lower temperature than fresh water. 2. the scientist goes to the library and reads a ...

SCIENCE!
last worksheet for SCIENCE! for today analyzing elements of a scientific method read the following statements and then answer the questions. 1. you and your friend are walking along a each in maine on january 15, at 8:00 am. 2. you notice a thermometer on a nearby building ...

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...

SCIENCE!
i was not taught in my science class any of this, probably a review over 6th grade science, because i learned these in 6th grade.(im in 7th grade now) identifying Errors read the following paragraph and then answer the questions. andrew arrived at school and went directly to ...

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...

english
How does the episode with Victor's father and the episode with the lightning strike as described in this excerpt function similarly? (5 points) They both involve the reading of books about science. They both involve interactions with parents or guardians. They both suggest a ...

english
And thus for a time I was occupied by exploded systems, mingling, like an unadept, a thousand contradictory theories and floundering desperately in a very slough of multifarious knowledge, guided by an ardent imagination and childish reasoning, till an accident again changed ...

english
All that had so long engaged my attention suddenly grew despicable. Which of the following assertions is supported by this text? The forces of nature are not predictable enough for the narrator. The forces of nature are responsible for the shift in focus of the narrator. The ...

english
What is the main effect of the scene with the lightning strike on the reader? 1. It suggests the narrator has little understanding of the world. 2. It suggests the power of nature is beyond the control of the narrator 3. It suggests the shifting nature of the narrator's ...

english
What is the main effect of describing key events in the narrative as "accidents" or as happening by chance? They suggest the events are not entirely negative in their effects on the narrator. They suggest the events cannot be retold objectively by the narrator. They suggest ...

Science
Need some help? How is the model of King Tut like other models used by scientists?

science
Is tundra abiotic or biotic

Science
1)A scientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. To do this, he sprays the chemical on three plants he has in the laboratory. None of the plants survive. The scientist reports that the ...

SCIENCE!
more on hypotheses hypotheses help explain puzzling situations or events. hypotheses answer "how", "what, and "why" questions. explain each of the following situations with a hypothesis: 1. you hang a bird feeder, fill it with food, but no birds come to it. hypothesis: birds ...

Political Science
Does the representation system in the U.S. Senate still make sense today? Why or why not?

Political Science
Develop an argument for a strong national government, or for greater state sovereignty and independence.

Math
On average it takes Miguel 45 minutes to compete his math assignments and 30 minutes to complete his science assignments. If he had 24 math assignments this grading period , what was his total minutes spent on math ?

Science
Which of the following is not an example of acceleration. A a person jogging atn3 m/s along a winding path B a car stopping at a stop sign. C a cheetah running 27m/s east D a plane taking off

Science
A truck whose bed is 2.5m long 1.5 m wide and 1.0 m high is delivering sand for a sand sculpture competition. About how many trips must the truck make to deliver 7 m3 if sand

Science
Why do NBA players wear shoes made of rubber? Think about friction, durability, weight and other factors that make rubber the perfect material for the soles of basketball shoes.

Science
can you name two hemisphers in duluth ga

science
find the direction p of the line of intersection of the plains x+3y-z=5 and 2y +4z=3

science
(1) A sample of the hydrate CuSO4.5H2O has a mass of 12.5g. (a) how many molecules of hydrogen are contained in this hydrate? If the hydrate is completely dehydrated.

Science
Fishnets g cxx busty gzfu gd I bzy Gozo duo chv blog

science
The potential energy (in J) of a system in one dimension is given by: 2 3 U(x) = 5 − x + 3x − 2x What is the work done in moving a particle in this potential from x = 1 m to x = 2 m? What is the force on a particle in this potential at x = 1 m and x = 2 m? Locate ...

biology-science
organism: 7 characteristics that make up all organisms biosphere: name our biospherE?

science
A body of mass 20kg moving with a velocity of 8m/s collides with a stationary body of mass 10kg and the two stick together.They then move with a common velocity V.Find the value of V.

Science
1. The senses are used to make which of the following? (1 point.) inferences predictions evaluations observations*****

Science
You are exercising on a hot day. Your body temperature goes up. You begin to sweat. The sweat cools your body. Sweating is an example of: A. Input. B. Process. C. Output. D. Feedback.*** I think D?

physical science
If the park is 360 meters wide and the tram takes 6 minutes to get to the other side, how fast is it moving?

Science
After developing a hypothesis a scientist is ready to test it by

science
which of the following properties of water explains its characterization as the universal solvent. a)kinetic energy of liquid water molecules b)high specific heat c)polarity of water molecules d)high surface tension I chose C

science
which of the following properties of water explains its characterization as the universal solvent. a)kinetic energy of liquid water molecules b)high specific heat c)polarity of water molecules d)high surface tension

science
A certain quantity of electricity deposits 0.54grams of silver nitrate solution. What volume of H2 will be liberated by the same quantity of electricity at 27 ° C and 750 mm of Hg pressure

physical science
A 8.kg box is sliding across the horizontal floor of an elevator the coefficient of kinetic friction between the box and the floor is 0.310. Determine the kinetic frictional force that acts on the box when the elevator is accelerating downward with an acceleration whose ...

Science
in a cricket match a spin bowler bowls a ball from one end of the pitch to rough spot on the pitch which is 18.6 metres from where he lets go of the ball if the ball takes 1.4 seconds to hit the spot calculate its average speed

Math and Science
Integration of curriculum areas can be pictured in a weblike structure in which mathematics is always at the center and science and other subjects are attached by radials true or false

Early childhood
integration of curriculum areas can be pictured in a weblike structure in which mathematics is always at tech center and science and other subjects are attached by radials

science
solution A was prepared by dissolving 0.63g of HNO3 in 100cm3 solution. Solution B is a sodium calcium hydroxide solution of unknown concentration. state a balanced chemical equation for the reaction

Physical Science
A transparent object made of glass without any color (A) absorbs all frequencies of visible light and re-emits them from atom to atom through the object. (B) absorbs all frequencies of visible light and transforms the energy into thermal energy (C) has atoms or molecules whose...

Science
A scientist is testing the effects of fertilizer on peanut production. He plants 4 peanut plants and applies a different amount of fertilizer to each plant. Two of the plants die. Can he conclude that the amounts of fertilizer used on those plants were lethal? What other ...

Physical Science
33 A. If the woman is 2 meters in front of the mirror, how far behind the mirror will she see her image? B: Is this a real image or a virtual image? C: How could you prove your answer to B?

Science study skills
What is the importance of questioning in the SQ3R system? 1.) Questioning helps you read the material quickly. 2.) Questioning keeps your brian actively trying to find answers while you are reading. 3.) Questioning helps you identify questions that will be on the test. 4.) ...

Science study skills
What is the most effective way to begin studying a lesson? 1.) Make up questions about the lesson. 2.) Look at the headings and subheadings of the lesson to get an idea of what the lesson is about. 3.) Review the lesson that comes after it.] 4.) Look ahead to see if the ...

science
A bolt of mass 0.3 kg falls from The ceiling of an elevator moving down with a uniform speed of 7m/s.It hits the floor of the elevator and does not rebound.What is the heat produced by the impact?g=9.8m/s to the power 2 .

Science
Turning on the switch in a flashlight starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this system is an example of a process? A. Turning on the switch is a process. B. The conversation of ...

Science
A chemist notes that a solution turns blue when a chemical reaction takes place. Which of the following correctly describes the chemist's data? A.The data is a qualitative observation*** B.The data is a quantitative observation C.The data is a prediction D.The data is a ...

Science
A biologist determines that a lizard's body temperature is 29 degrees C. Which of the following correctly describes the biologist's data? a) it is a qualitative observation b) it is a quantitative observation*** c) it is a prediction d) it is a classification

Science
You walk into the kitchen and see a broken egg on the floor. Which of the following is an inference you can make based on this observation? a) The egg rolled off the kitchen counter*** b) the dog will eat the egg off the floor c) there are pieces of broken eggshell on the ...

Science
a wire of length 4m and radius 1 mm has a resistance of 1 ohm.what length of the wire of the same material at the same temperature and of radius 2 mm will also have a resistance of 1 ohm

BHEKISISA
ENGLISH.ISIZULU.LIFE SCIENCE. LIFE ORIENTATION.MATH LITERACY.HISTORY ND GEOGRAPHY. am doing grade 11 so has am doing this subject iwant to know which career i must task when i pass my matric plz help me

Science
do radioactive elements occur naturally on earth

Science
does the air in our atmosphere contains elements that we breathe with every breath

u.s. history
Use the quote below to answer the following question. “[T]hese Powers . . . are so distributed among the Legislative, Executive, and Judicial Branches, into which the general Government is arranged, that it can never be in danger of degenerating into a monarchy, an Oligarchy...

Science
The lesion is located in the right thorax just lateral to the mid-saggital plane

Science
How is 0.00069 written in scientific notation? A)69 x 10^–5 B)6.9 x 10^4 C)0.69 x 10^–3 D)6.9 x 10^–4 My Choice is A

science
An ant travelled along the vector a whose magnitude is 10 meters and direction is 45 degree to horizontal and then moved along vector b whose magnitude is 9 meters and direction is 0 degree with horizontal . Find its displacement

life science
Two breaking tubes,two drnking staws,clear lime water

science
A combination of two prism one of flint &other of crown glass produces dispersion without deviation.The angle of the flint glass prism is 15degree . Calculate the angle of crown glass prism & the dispersion separation of red & violet rays an emergence from spectroscope.refra. ...

Science
There can be several controlled variables. If an experiment is to be useful, only one variable at a time can be manipulated intentionally. All other variables must be controlled throughout all parts of the experiment. If more than one variable is altered, the results of an ...

Computer science
use a modular approach and pseudo- code to design a suitable program to solve it. Allow the user to enter a series of temperatures in degrees Celsius (C) termi- nated by the input of −999. For each one, find the corresponding tempera- ture in degrees Fahrenheit (F). The ...

life science
what is the removal of trees without adequate replanting?

University, subject science
What is the difference between plasmid and chromosomal DNA? What is Mutant bacteriophage?

science
an automobile of mass 1800kg takes a turn of radius 270m. If the force on the tyres to maintain the motion along the curve is not to exceed 630n, the limiting speed of the vehicle assuming no banking will be

Science
You have 75.0 mL of a 2.50 M solution of Na2CrO4 (aq). You also have 125 mL of a 2.15 M solution of AgNO3 (aq). Calculate the concentration of NO3 when the two solutions are added together.

Science
How to find the volume of the solvent that is added to a diluted solution.

science
Hey im doing grade 11 at 2012 but I drop out at June but I have the results at March report.so how do I do to get a matric or finish school?

science`
When doing an experiment, it is important to follow all of the procedures EXCEPT ______________. Question 1 options: wearing protective goggles arranging and organizing the work space neatly understanding the meaning of the safety precautions using smaller beakers before using...

Science
Give the scientific terminology for each discription 1The chemical synthesis process in plants in which CO2 plays a vital role 2Manure that comes from plants that are planted,but not harvested 3The name of the first step in the ostwald process

science cbse school
6.66m/s2

Science
In a scientific experiment, facts, figures, and other evidence gathered through observations are called? A. Data(?) B. Manipulated Variables C. Responding Variables D. Laws

Science
I have 8 questions and 1 question in the end that I don't need help with. Identify possible variables in the following situations. What variables can affect the sprouting of a bean seed? I think (I didn't answer yet so I'll just go with what I think oh and these aren't multi ...

Life Science
determing whether expired air contains CO2. 1.Formulate hypothesis 2.Aim 3. a) idependent V, dependent and controlled variables 4. methods step by step 5. observation

science
I need help with an acrostic poems or name fororn for lab sa

physical science
zinc electrode is placed in a solution of lead nitrate.write a balanced equation

Math (Probability)
In a random poll of science students, it was determined that 90% of students submitted tests before the deadline. In a random sample of 75, what is the probability that exactly 10 submitted after the deadline? What is the probability that less than 10 submitted after the ...

Science
Explain how you would design an experiment to text your hypothesis.it's about my pet birds.

Science
Explain how you would design an experiment to text your hypothesis.

Science
The combustion of a compound which contains only C and H yields 2.58 g of CO2 and 0.53 g of H2O. What is the empirical formula of the compound? Molar mass of CO2= 44.01 Molar mass of H20= 18.01 2.58g/44.01=0.586 mol CO2 .53g/18.01=.0294 mol H2O I Don't know where I went wrong?

math, science, everything else for 10th grader
If sec x = 17/8; verify that 3 - 4sin^2x /4cos^2x -3 = 3- tan^2x / 1-3tan^2x.. I have used x in place of theta. It isn't multiplication symbol.. ^2 means to the power 2. Pls help

Science
4. Which geographic feature marks the last natural obstacle for Georgia's rivers on their way to the Atlantic Ocean? A) the Floridian Aquifer B) the Vally and Ridge region C) the fall line D) the Marshes of Glynn I got A but I'm not sure if it's right

science
Experiments cannot validate hypotheses, only falsify them. The statement above can be restated in which of the following ways? A. Until disproved, an explanation for an observation is valid. B. Certain concepts cannot be subjected to direct experimentation. C. A hypothesis ...

science
Which of the following nitrogenous bases is found exclusively in DNA? A. Adenine B. Cytosine C. Guanine D. Thymine i think it's D

Science
what are the effects of oxygen on medal.

science
Should designers of Olympic medals use oxygen (O) to make an Olympic medal?

science
An eagle is a carnivore. It MOST LIKELY gets the energy it needs to reproduce from A) oxygen. B) plants. C) the sun.--------- D) rodents.

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