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Chemicals usually have both physical and health hazard. Identify the following if it b hazard. Health Hazard Mutagen Physical Hazard Barbeque have this benzo (a] pyrene that can cause cancer Physical Hazard Fire Toxins Physical Hazard Chemical burn Physical Hazard Explosives Large amount of smoke being inhaled Physical Hazard Spill of caustic soda in your skin Physical Hazard Health Hazerd Dlog

Concentrated sulphuric acid is used in this experiment to O help the crystal growth of acetylsalicylic acid speed up the reaction of aspirin synthesis increase the activation energy O avoid impurities getting trapped into the aspirin crystals P Type here to search

Note: no need for explanation, just answer it all with letters. Thank you

I'm taking a practice test and I'm having some trouble and was hoping you could help.  This is not graded I just need help See attached:

Choose any class of biological molecule and describe a disease or condition that is related to a problem with your body using that molecule.

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Find one pertinent analytical procedure for each of following questions relating to food safety analysis. Question 1: The presence of lead, mercury and cadmium in canned tuna Question 2: Correct use of food labelling

When you are calculating water hardness, all the compounds in the water are considered to be -------- ? Select one:   Limestone CaCO3 Hydrates MgCO3

What is the difference between single use, limited use and reusable chemical protective garments?

TRUE OR FALSE __________ 6. Glassware is clean when no water droplets cling to the inner wall of the vessel. __________ 7. When smelling the odor of a chemical substance, fan your hand over the substance toward your nose which should be centimeters away from the substance. __________ 8. An accident as simple as breaking a beaker containing distilled water in the sink does not need to be reported to the laboratory instructor. __________ 9. Students should turn off cell phones, iPads, and other electronic devices during the laboratory class. __________ 10. It is a good laboratory protocol to call other students’ attention when they do not practice good laboratory safety procedures.

Posttest Direction. Read the questions carefully. Write the letter of the correct answer. 1. Water exists in three states of matter and continuously moving through a cycle on Earth. At which stage in the water cycle does water transform from a gas to a liquid? a.evaporation c. precipitation b. condensation d. Sublimation 2. Carbon dioxide (CO2) forms when coal burns in the presence of oxygen. Which of the following is the BEST evidence that a chemical reaction occurs when the coal burns? a. Production of mechanical energy c. A new substance is produced b. Production of electricity d. Formation of precipitate 3.Which of these does NOT happen during a chemical change? a. New substances are formed with different chemical properties. b. Attractive force between atoms of molecule formed or break. c. The chemical properties of the substances before and after the reaction are the same d. Energy is always released or absorbed. 4. A granular substance is added to a liquid. Which of the…

Carbon dioxide concentration (parts per million) Examine the graph and answer the following questions. Part A Atmospheric Carbon Dioxide What was the average rate of increase in carbon doxide concentration between 1900 and 19407 410 400 Express you answer in parts per million per year to two significant figures. 300 380 a ? 370 360 ppm/year 350 340 Submit Bequest Anawer 330 320 310 Part 8 Complete previous parts) 300 290 - 1860 1880 1900 1920 1940 1960 1980 2000 2020 Provide Feedback Next> Year

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Question 20 of 26 > While driving your rental car on your vacation in Europe, you find that you are getting 13.4 km/L of gasoline. What does this value correspond to in miles per gallon? 13.4 km/L = mi gal about us privacy policy terms of use contact us help careers DD F12 F11

What chemicals do you think are most harmful to your own health? How are you exposed? How could you go about determining whether or not each of these chemicals was harmful to you?

Which branch of chemistry would be the most relevant to a learner that plans on becoming a nutritionist? A physical chemistry B C D biochemistry inorganic chemistry nuclear chemistry

Sulfur compounds cause "off odors" in wine, so winemakers want to know the odor threshold — the lowest concentration of a compound that the human nose can detect. The odor threshold for dimethyl sulfide (DMS) in trained wine tasters is about 2525 micrograms per liter of wine (?g/L).(�g/L). The untrained noses of consumers may be less sensitive, however. The DMS odor thresholds for 1010 untrained students are given. DMS odor thresholds 30 30 42 35 22 33 31 29 19 23   Assume that the standard deviation of the odor threshold for untrained noses is known to be ?=7 ?g/L.     Give a 95% confidence interval for the mean DMS odor threshold among all students. Use the four‑step process. Give your answer as an interval in the form (lower bound, upper bound). Give your numbers to two decimal places. What is the confidence interval ?

All these chemicals mentioned below name ways to avoid them and to clean them up if spilled?  Hazards or safety concerns associated with these chemicals: Zinc sulfate: can cause irritation Copper(II) sulfate: this can cause skin and eye irritation Potassium nitrate: a fire hazard when in contact with combustible material Silver nitrate: can cause skin, respiratory, and eye irritation such as reddish to the body. Aluminum nitrate: thus can cause severe irritation and burns like irritation of the nose, throat, and lung with coughing, wheezing, and/or shortness of breath.

If a 185-lb patient is prescribed 145 mg of the cholesterol lowering drug Tricor daily, what dosage is the patient receiving in mg/kg of his body weight? (1 lb = 454 g, 1 kg = 1000 g) O A. 17.3 mg/kg B. 1.726 mg/kg O C. 1.73 mg/kg D. 1.28 mg/kg E. 0.783 mg/kg

3. What are volatile chemicals? A. Chemicals that exist as gases at ambient conditions (room temperature and pressure) B. Chemicals that are very reactive. C. Chemicals that can evaporate easily at ambient conditions. D. Chemicals that are liquids at ambient conditions.

Organic solvent has a density of 1.12g/mL and is insoluble in water. If organic solvent is mixed with water, water will be the top layer..