1. Science
    IF 8.5g of KOH powder are placed in 100g of water at room temperature of 20degree Celsius, what is the final temperature of the solution. KOH K+OH H=-57.61 KJ/MOL KOH
  2. science
    Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up individual stars. *** • ...
  3. science
    Special telescopes, such as the Chandra X-ray Telescope, help astronomers see different kinds of electromagnetic radiation besides visible light. Why is this helpful? • X-Rays give off a spectrum of light that tell astronomers what elements make up individual stars. *** • ...
  4. Science- bio- Please help!!
    Pretend you are a medical professional and it your job to make an I.V. solution for a patient that has a total cellular solute count of 1.19%. What would be the perfect I.V. solution to administer to your patient?
  5. Marine Science
    Describe the phases of the nitrogen cycle, in the marine environment, starting with the death of a fish. Could someone help me with this? I just need it explained to me, I've watched and read many articles.. but still do not understand very well
  6. Science
    Lesson 10:introduction to genetics unit test science 8A unit 2: introduction to genetics Connexus Wht are the awnsers any1:P 👍
  7. Science
    1. What is the response of cells in the collecting tubules in the nephrons when antidiuretic hormone AHD is secreted? a. The tubules become impermeable to water b. Serum potassium retention increases c. Large quantities of dilute urine are formed d. Water is reabsorbed from ...
  8. Science
    When an electric current passed through water during the process of electrolysis, two gases are formed. One gas has a boiling point of -183 degrees Celsius and the other has a boiling point of -253 degrees Celsius. Has a physical or a chemical change occurred? Explain.
  9. Science
    1) What subatomic particles are located in the nucleus and have no effect on the charge of the atom? a) Protons and neutrons b) Electrons c) Neutrons d) Protons 2) The electron can be found in what location of an atom? a) Orbit b) Center c) Attached to protons d) Both the ...
  10. science
    need answers for introduction for science unit test
  11. Science
    What are the three types of plate boundaries? Can you please not give me the answer, just a website! Thanks!
  12. science
    this system gives the body its shape
  13. Science
    Rate of change in velocity is known as
  14. science
    in the kidney what is the correct sequence of formation of urine involves the following processes? a). glomerular filtration, reabsorption, tubular secretion b). reabsorption. filtration, secretion c). filtration, secretion, reabsorption d). reabsorption, secretion, filtration
  15. Science
    Given the parent genotype AaBbCCDDEe, what is the probability of each of these gametes forming? a) ABCDE b) either ABCDE or abCDE Would the answer for a) be 1/8 and for b) be 1/2?
  16. Science Help!
    How does sea-floor spreading occur? A)New materials are being added to the asthenosphere B) Earthquakes break apart the ocean floor C)Sediments accumulate at the areas of the spreading D)Molten material beneath Earth's crust rises to the surface
  17. Science
    Explain the value or importance of using the International System of Units when describing motion. Provide an example that supports your reasoning.
  18. science
    Interpret Data. write the chemical equation for the following reaction: The elements sodium and chlorine combine to yield the compound sodium chloride. need help any help answer or a link idc
  19. Computer Science
    You want to buy a new car, and you are thinking about two alternatives, car A and car B. You like both cars, and you are considering keeping whichever one you buy for many years to come. As a result, you want to evaluate the total cost of ownership of both cars over many years...
  20. science
    Balance the equations. AI+CuO-->AI2O3=Cu Fe2O3=C-->Fe=CO2 SO2=O2-->So3 i need help please
  21. Computer Science
    You want to buy a new car, and you are thinking about two alternatives, car A and car B. You like both cars, and you are considering keeping whichever one you buy for many years to come. As a result, you want to evaluate the total cost of ownership of both cars over many years...
  22. history
    What were some differences between the Byzantine and Arab Empires? (Select all that apply.) the byzantine empire forbade trade with Visigoth and Frankish nations, whereas the arab empire encouraged seagoing trade. the byzantine empire had great regard for science and ...
  23. science
    A body fired vertically up reaches a maximum heigh H where is kinetic energy 75% of potential energy
  24. Science Portfolio
    1st Safety Rule What you should before you start a lab 2nd Safety Rule What you can/should do DURING the Lab 3rd Safety Rule Of what you can/should do After a lab
  25. Science
    How did the indicator of barium hydroxide appear in the absence of carbon dioxide by yeast cell
  26. Science help
    identify the terms or phrases that are paired together correctly a. deserts and dwarf trees b. temperate and deciduous forest and evergreen trees c. subarctic taiga and moss d. tundra and permafrost (my answer) In which bione would you find the main types of plant life to be ...
  27. Science
    Explain why science is a continuous progression of study. No, I'm not trying to plagiarize, I just want an example of what you would write, so I can figure out what I'll write in my own words. I learned that plagiarism has consequences the hard way.
  28. Science
    An animal that has body parts arranged around a central point has: A.bilateral symmetry. B.radial symmetry. C.asymmetry. D.a distinct head and tail end.
  29. Science
    If don't mind could you check my answers for environmental science 1.The interdisciplinary study of humanity’s relationship with other organisms and the non-living physical environment is termed: a) ecology b) sociology c) political science d) risk analysis e) ...
  30. Science
    Using a complete sentence, state what would mostly likely to happen to the production of oxygen by duckweed plants if the intensity and duration of exposure to light were increased
  31. Science
    If don't mind could you check my answers for environmental science 1.The interdisciplinary study of humanity’s relationship with other organisms and the non-living physical environment is termed: a) ecology b) sociology c) political science d) risk analysis e) environmental ...
  32. Science
    how are carbon atoms incorporated into organic molecules by plants?
  33. Science
    Explain what the difference is between a scientific law and a scientific theory. My answer: A scientific theory predicts why something might happen and when more information goes into the theory it can better predict. But a law is something that no matter what will always be ...
  34. Science check my answers please
    1. Convert 4.0 kilometers (km) to meters (m). (1 point) 0.04 m 40 m 400 m 4,000 m (my answer) 2. For his science project, Austin wants to determine if the pH of standing rainwater changes over time. He collects a jar of rainwater and places it indoors in a spot that does not ...
  35. science
    A bullet m9ving at a speed of 10m/s strikes a wooden plank . The bullet penetrates the plank 2cm deep and remains embedded in it . The acceleration of the bullet is?
  36. Science
    Earth's aatmosphere, oceans, and continents began to form during the first several hundred million years of..... A.Precambrian time. B.The Paleozoic era. C.The Mesozoic era. D. The Cenozoic era.
  37. Math,science and technology
    I need some help in a weekly reader
  38. Science
    Does the MidAtlantic Ridge have gabbro and peridotite rocks?
  39. science
    Both a globe and flat world map can model features of Earth. Give an example of when you would use each of these models.
  40. Science
    What caused the outer planets to have surfaces of liquids and gases
  41. To Chemistry students
    Our primary chemistry tutor has gone on a trip for about a week and a half. In the meantime, you should make good use of the tutorials here: https://www.khanacademy.org/ Once there, you can make an account for yourself if you wish. You don't have to, but you can. This is an ...
  42. science
    If a man weighs 194 pounds and is 69 inches tall where is his center of gravity?
  43. phisical science
    On a winter day the temperature drops from –15°C to –25°C overnight. If a pan sitting outside contains 0.20 kg of ice, how much heat is removed from the ice for this temperature change?
  44. Science
    What is the density of a book whose mass is 1,800 g and whose volume is 300 cm3? *My Answer*You want to identify the numbers first, density = mass ÷ volume. Which would give you, 1800g ÷ 300 cm³ = 6 g/cm³. *Cant Figure Out *What is the mass of a ball whose density is 0.250...
  45. Earth Science
    Minerals are classified into groups based on _______. Characteristics?
  46. Science
    Why was the tert. Butyl chloride finally washed with water,?
  47. Science
    How does a higher heat capacity affect the amount of time it takes for an object’s temperature to change?
  48. Science
    Why do scientists use models? a: Scientists use models to learn about things that are too small, too large, or too complex to observe directly. < b:Scientists use models because doing so is always part of the scientific method. c:Scientists use models because they always ...
  49. science
    What mass of NaNO3 can be formed by 0.20 grams of NaSO4.3H20?
  50. Science
    Definition of Critical Thinking The first reading contained the following definition of critical thinking: According to the article, Critical Thinking as Defined by the National Council for Excellence in Critical Thinking, Critical thinking is the intellectually disciplined ...
  51. Science
    Eight Elements of Thought and Reasoning There are eight elements of thought in reasoning. We often use more than one element at the same time. For example, your Point of View includes Assumptions. Therefore, we can assume that these elements are two aspects of the same thing. ...
  52. Science
    Fair-Minded Qualities After reading this week’s lectures on the qualities of a Fair-Minded Thinker, select one quality you feel you possess and describe how you embody this quality. Next, select two qualities you feel you need to improve upon. Using the five step decision ...
  53. Science:Earth Science
    Explain how energy conservation can help with decreasing air, water and land pollution. This is an essay question. This is my answer. Answer: Energy conservation can help with decreasing air, water, and land pollution because of the different alternatives we have for energy. ...
  54. Science
    a biologist diluted a blood sample with distilled water. While observing the sample with a microscope, she noted that the red blood cells had burst. This bursting is most likely the result of which process?
  55. Science
    animals with bilateral symmetry
  56. Science
    Use your periodic table of elements. Take any element of your choosing (from period 4 or above) and answer the following questions: What is the element's name and symbol? Is it a metal, nonmetal, or metalloid? Which family does it belong to? How many protons, neutrons, and ...
  57. Science
    what is Ti(HPO4)2 Titanium Hydrogen Phosphate? Does it occur naturally in soil material? if yes in what state does it occur?
  58. Physical Science
    How do you find the mass if they give you the joules and the velocity? Please help me! I'm really confused...
  59. Physical Science
    Two objects were lifted by a machine. One object had a mas of 2 kilograms, and was lifted at a speed of 2 m/sec. The other had a mass of 4 kilogram was lifted at a rate of 3 m/sec. ----------------------------------------​--- a) Which object had more kinetic energy being...
  60. Physical Science
    The potential energy of an apple is 6.00 joules. The apple is 3.00-meters high. What is the mass of the apple? Please help! I have no idea how to solve this. :(
  61. science
    Kelly needs to separate a mixture of sand and sawdust. She tried using tweezers to pick out the pieces of sawdust, but that didn’t work. Her grandfather suggested she use water. How will water help Kelly separate the mixture?
  62. Science
    Why must organisms reproduce? A. Organisms must reproduce to maintain genetic similarity in the species. B. Organisms must reproduce to continue to build genetic diversity into the species. C. Organisms must reproduce to continue the species.*** D. Organisms must reproduce to ...
  63. Science
    1 the term used to describe how light is reflected from a minerals surface is A.glow. B.streak. C. Density. D.luster.
  64. science
    what is the substrate for primase ?
  65. science
    do we just breathe with oxygen or oxygen is mix with other gases.
  66. math
    Three subjects Geography, Science and English in the library are in the ratio of 5:7:8 which they had increased by 20%,40% and 50%. Find the ratio of increased books # Please guys can you assist me this question#
  67. math
    Three subjects Geography, Science and English in the library are in the ratio of 5:7:8 which they had increased by 20%,40% and 50%. Find the ratio of increased books # Please guys can you assist me this question#
  68. Science
    When 2-propanol was used as the developing solvent, two substances moved with the solvent front (Rf = 1) during TLC analysis on a silica gel plate. Can you conclude that they are identical? If not, what additional experiment would you perform?
  69. science
    what is the substrate for primase ?
  70. English
    They watch science programs in their spare time! Instructions: Select the correct answer. My answers are with capital letter 1. Jason wanted to pass on ... A. something who he had been told. B. SOMETHING, WHICH HE HAD BEEN TOLD. C. something that he had been told. D. something...
  71. Science
    State and explain five causes of disability in children during the post natal period.
  72. science
    2. On the Celsius scale at what temperature does water boil a. 0° B. 212° c. 100° d. 32° 3. There are 1,660 megawatts of wind energy produced globally every year which is equivalent to__ A. 1,660,000 watts B. 1,666,000 killo watts C. 16,600,000 watts D. 166,000,000 killo ...
  73. Science
    Which of the following represents a heterogeneous mixture? 1)saltwater 2)air 3)bleach and water 4)chicken noodle soup I think #3 Thank you.
  74. science
    Hi! My heartful request to explain thé photosystem and blackmans law of limiting factor in simple and understandable word as possible.
  75. Science
    Aggression that develops when the animal is confused about what the owner wants is _______ aggression. A. territorial B. conflict-related C. pain-induced D. fear I am stuck in between A and B please help me
  76. Environmental science
    Assume the biomass of the organism at the bottom of the trophic is 5,000 lbs. predict the approximate mass of each of the remaining levels, explain why the mass is changing.
  77. Environmental science
    If anyone doesn't mind could they explain the biogeochemical cycle. What are the sinks? How do they work ? How do humans affect them?
  78. Science
    Bullet of mass 30g travels at a speed of 1500m/s,calculate its kinetic energy.
  79. science
    Goose grass grows tightly around other plants such as hawthorn bushes. suggest two reasons why this method of growth is an advantage for the goose grass.
  80. science question
    Calculate the number of mole in 65.5 ug of carbon and 7.9mg of Ca
  81. science
    Which of the following would increase the effect of tides on Earth (high tides get higher, low tides get lower) - slowing the rate of rotation of the Moon. - increasing the rate of rotation of the Moon. *** - decreasing the distance between the Earth around the Sun - ...
  82. Science
    CORRECT THIS ANSWER PLS: Liz is examining a plant cell under a microscope. She sees many small green organelles inside the cell. Her teacher explains that the process of photosynthesis takes place inside these organelles. What type of organelle is Liz looking at? A....
  83. Science
    What is the relationship between drainage density and a) Rainfall b) Vegetation c) Soil Erodibility
  84. science
    Caculate the mass of photon with wavelength 3.6 A^
  85. science
    Which of the following would increase the effect of tides on Earth (high tides get higher, low tides get lower) - slowing the rate of rotation of the Moon. - increasing the rate of rotation of the Moon. *** - decreasing the distance between the Earth around the Sun - ...
  86. Science, Maths
    A block and tackle of 5 pulleys is used to raise a load of 5o kgf steadily through a height of 20m. The work against friction is 2000J.Calculate the work done by effort, efficiency and mechanical advantage.
  87. Science
    A diver curls up when he performs a stunt. Explain. Calculate the angular momentum of a body rotating with 20rpm and M.I 4kg m²
  88. science
    Which of the following would increase the effect of tides on Earth (high tides get higher, low tides get lower) - slowing the rate of rotation of the Moon. - increasing the rate of rotation of the Moon. *** - decreasing the distance between the Earth around the Sun - ...
  89. science
    The main cause of the changing location of the tides on earth is -rotation of the Earth on its' own axis - magnetic forces of the Moon - the revolution of the Moon around the Earth *** -the position of the Sun
  90. BASIC SCIENCE
    DRAWING OF A CELL
  91. science
    He many isomers can be obtained from C4H10
  92. Science -Physics
    The shaker cart,shown in the figure,is the latest extreme sport craze.You stand inside of a small cart attached to a heavy-duty spring,the spring is compressed and released,and you shake back and forth,attempting to maintain your balance. Note that there is also a sandbag in ...
  93. Science-physics
    A mass of 0•5 kg is attached to a spring. The mass is then displaced from its equilibrium position by 5cm and released. It's speed as it passes the equilibrium position is 50cm/s. A)calculate the spring constant of the spring. B)calculate the maximum acceleration of the ...
  94. Science
    Draw picture graph of the above question?
  95. Science
    Suppose three seeds were kept at 30c and sprouted in 6,5 and 4 days. What is the average number of days that these seeds took to sprout?
  96. Science
    Is the South American Plate and African Plate convergent continent to continent boundary?
  97. Physical Science
    Hello! Thanks for checking my question out! ____ 3. During a phase change, the temperature of a substance (1 point) a) increases. b) decreases. c) does not change. d) increases or decreases. My Answer: C Could someone please check my answer? Thanks! - Da Fash
  98. Physical Science
    Hello! Thanks for checking my question out! ____ 5. If the volume of a cylinder is reduced from 8.0 liters to 4.0 liters, the pressure of the gas in the cylinder will change from 70 kilopascals to (1 point) a) 35 kilopascals. b) 105 kilopascals. c) 140 kilopascals. d) 560 ...
  99. Physical Science
    Hello! Thanks for checking my question out! ____ 2. Which of the following is NOT a clue that a chemical change has occurred? (1 point) a) change in color b) production of a gas c) formation of a precipitate d) change in shape My Answer: D Could someone please check my answer...
  100. Physical Science
    Hello! Thanks for checking my question out! ____ Fill in the Blank 10. The _______________ theory of matter states that all particles of matter are in constant motion. (1 point) My Answer: kinetic Could someone please check my answer? Thanks! - Da Fash
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