Answers created by Simon Moore

• Back to user's profile
• Next
• A car is traveling at a speed of 38.0 m/s on an interstate highway where the speed limit is 75.0 mi/h. Is the driver exceeding the speed limit?
  
• An experiment calls for 50 percent of saline solution carl has 50 milliliters of a 10 percent saline solution, how many milliliters of pure saline solution should carl add to obtain the required 50 percent solution?
  
• When should you use "dissatisfied" and when should you use "unsatisfied"?
  
• Why is there no gas pressure in a vacuum?
  
• What are degenerate orbitals?
  
• What will cause a decrease in gas pressure in a closed container?
  
• When fluorite is exposed to ultraviolet light, does it melt?
  
• How would you contrast intensive and extensive physical properties?
  
• How many ml of a 0.2w/w% NaOH solution (d=1.2 g/ml) contains 1.32g solute ?
  
• What is the highest point on earth?
  
• How would an increase in pressure affect the following reaction? N2 (g) + O2 (g) Two arrows stacked on top of each other. The top arrow points to the right. The bottom arrow points to the left. 2NO (g) The equilibrium would shift to the right. The eq
  
• Why is an alkyl group is denoted by #"R"#?
  
• The doctor orders a medication as #"5.00 mg/kg"# of body weight. The dosage the nurse gives the patient is #"425 mg"#. How much does the patient weigh in pounds?
  
• Is dyneema fiber conductor of electricity?
  
• If you have solids that need to be dissolved, what can you do to speed the process up?
  
• How would I convert the following to ppm? 3 grams of lead found in 30kg of soil.
  
• In the following sentence, should "Who" or "Whom" be used in the blank space?: ___ understands the contents of this document?
  
• In the following sentence, should "Who" or "Whom" be used in the blank space?: To ___ should this be addressed to?
  
• Why are resonance structures necessary?
  
• Any 3 reasons for profuse use of plastics although it is harmful?
  
• Why does the Antarctic have a large hole in the ozone, when no one even lives there?
  
• How does a solution differ from a colloid?
  
• The density of ether is 0.714 g/mL. what is the mass of 1.45 L of ether?
  
• What do you mean by 18 carat gold?
  
• What would be the volume of 6.00 g of helium gas at STP?
  
• I was always told that apostrophes are used to show ownership. So why is it not correct in this sentence: "The dog did not like it's bath."?
  
• Why must you wear safety glasses or goggles at all times while you are in the laboratory, even when you are not personally working on an experiment?
  
• Calculate the amount of water formed when #"8 g"# of #"H"_2"# is allowed to react completely with oxygen?
  
• Are ozone-depleting substances also greenhouse gases?
  
• What mixtures can be separated by centrifugation?
  
• What does alkyl mean?
  
• #CH_3 OH# and HCI both dissolve in water, but the dissolved HCI conducts electricity, while the dissolved #CH_3 OH# doesn't. Why?
  
• If the heat of combustion of ethanol is #1367kJmol^-1#, how would you calculate the theoretical mass of ethanol required to heat #200mL# of water from #21.0^@# to #45.0^@#?
  
• What is the molarity of 3.5 wt % NaCl dissolved in 1000 mL of distilled water?
  
• Is air a solution?
  
• What does a prefix n- mean when naming alkanes?
  
• What is the difference between a physical and a chemical property?
  
• How does matter differ from weight?
  
• Why might nuclear energy be controversial?
  
• You are instructed to make 150 ML of a 1.5 M potassium nitrate solution. What mass of solute must be measured to make the solution?
  
• Distinguish between a strong acid and concentrated acid?
  
• What is natural gas fracking?
  
• How do chlorofluorocarbons destroy ozone?
  
• Are scrambled eggs a pure substance or a mixture?
  
• How is rain slightly acidic?
  
• Why should you mix the oil slowly when you add it to the egg and vinegar mixture?
  
• Water can be produced from the reaction of hydrogen gas and oxygen. How many liters of hydrogen is needed to completely react with 5 liters of oxygen?
  
• How is aluminum oxide a metal compound when it has oxygen in its molecular formula which is a nonmetal?
  
• What is the boiling point of milk?
  
• Does ph paper work on metals?
  
• Is CH2 an alkyl group?
  
• During vaporization of water which of the following statements is not true?
  
• Why don't protons attract electron?
  
• What is laughing gas called? ?
  
• How much of the world's oil production currently comes from offshore regions?
  
• How do you identify an electrophile from a nucleophile?
  
• How can I explain the enthalpy of a system?
  
• Are corrosion and oxidation the same thing?
  
• If 15.00 g of solid zinc reacts with 100.0 mL of 4.00 M hydrochloric acid, what volume of hydrogen gas is produced at 25°C and 1.00 atm?
  
• Why is uncontaminated water colorless?
  
• When you blow air into a balloon, not only there will be increase in it's pressure but also it's volume. Is it a violation of Boyle's law?
  
• When a mixture of water, sand, and salt is filtered, what passes through the filter paper?
  
• Are synthetic vitamins any different from natural ones talking about their actions in the human body?
  
• What safety equipment should always be used when working with glass or chemicals?
  
• Why is ethyl acetate insoluble in water?
  
• Why are ionic compounds easily soluble in water?
  
• What are trans fats?
  
• Why is the product of vegetable oil and methanol a better fuel than vegetable oil itself?
  
• What is the source of most salt in the ocean?
  
• How is ethylene glycol made?
  
• What is the difference between nonbonding and antibonding orbital?
  
• Is boiling point a cooling process?
  
• At what temperature would gas occupy 3L?
  
• Do bases conduct electricity ?
  
• Question #9e1e5
  
• How much energy (in joules) is required to raise the temperature of 200g of liquid water from 20c to 50 c?
  
• Question #97d78
  
• Question #dfcec
  
• Question #d1cc8
  
• What is the test to distinguish between ethanol and ethanoic acid?
  
• Question #7ab96
  
• Question #eb5df
  
• Does copper metal and copper(II) oxide have the same physical and chemical properties?
  
• If I hold a 5-cm piece of copper wire over heat until it glows red/then allow the wire to cool/inspect it once again. Then would I classify it as a physical change or chemical change???
  
• Question #7ddac
  
• Question #f678c
  
• Question #97f68
  
• Children's Liquid Motrin contains 100. mg of the pain reliever ibuprofen per 5 mL. If the dose for a 75 lb child is 2.5 teaspoons, how many grams of ibuprofen would the child receive? ( 1 teaspoon = 5 mL.)
  
• Question #873be
  
• Silver emits light of 328.1 nm when burned. What is the energy of a mole of these photons?
  
• Question #ead66
  
• How many phases are in a homogeneous mixture?
  
• Is making glue an example ot a chemical change or a physical change? How do you know?
  
• Could you separate a colloid by filtering? Explain
  
• Are aryl or phenyl same? If not , please elaborate.
  
• I have a confusion regarding the nomenclature of phenol compounds, ? Please let me explain why Resorcinol is not named as 3 - Hydroxy phenol ????
  
• What is the difference in isbutyl and sec butyl? How , please explain.
  
• Question #97b95
  
• Question #42a90
  
• Question #c5a85
  
• Next