Chemistry

Scientific MethodPART A: Put the following steps of the scientific method in the correct order,1 Data2 Hypothesis3. Conclusion4. Problem5. Variables6. Research7. Procedure
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Why might you have difficulty determining the pH of bleach using ph strips?
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What happens when air moves from an area of high pressure to an area of low pressure?A Clouds are formedB Humidity rises. C Rain falls. D Wind is created.
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How many moles of O2 are needed to react completely with 35 moles of FeCl3? 4FeCl3 + 3O2 > 2Fe2O3 + 3Cl2
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What are the oxidizing agent and the reducing agent in this chemical equation?3Fe5 + 8HNO3 + 3FeSO4 + 8NO + 4H20A) Fes is the oxidizing agent, and HNO3 is the reducing agent.B) HNO3 is the oxidizing agent, and NO is the reducing agent.C) Fes is the reducing agent, and HNO3 is the oxidizing agent.D) HNO3 is the reducing agent, and NO is the oxidizing agent.
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water is a highly polar molecule with strong hydrogen bonding. one of the results of this is that water can climb up a narrow tube. the phenomenom is known as:A. catapult action (aka trebuchet onfire)B. capillary actionC. carpel tunnel syndromD. capitalization
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What happens to many synthetic elements after they are made
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What are the four main parts of the Sun? *
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Base your answer on the pedigree chart below and on your knowledge of biology. The pedigree chart represents the inheritance of color blindness through three generations. Mary and Steve are expecting another child. What is the probability that the new baby will be colorblind
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Who first discovered the phenomenon of radioactivity?
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Calculate the volume that 12.5 g of Co, gas will occupy at atemperature of 40C and a pressure of 1.20 atm.
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Which two substances are among the six most abundant elements in livingthings?A. HeliumB. CalciumC. ChlorineD. Nitrogen
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Which of the following will increase the boiling point of water?Adding more waterAdding sugarRemoving some of the waterNone of the above
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CHEM HELP PLS 30 POINTS!!1. what volume of 0.20 M HCl (aq) is needed to titrate 50 mL of 0.10 M NaOH to the endpoint?A) 10.0 mL HClB) 40.0 mL HClC) 25.0 mL HCl D) 20.0 mL HCl2. what is the molarity of a NaOH solution if 40 mL of the solution is titrated to the endpoint with 15 mL of 1.50 M H2SO4?A) 1.13 MB) 1.47 M C) 0.56 MD) 0.75 M3. suppose that 10.0 mL of HNO3 is neutralized by 71.4 mL of a 4.2 x 10 ^ -3 M solution of KOH in a titration. Calculate the concentration of the HNO3 solution.A) 1.0 x 10 ^ -2 MB) 3.0 x 10 ^ -2 MC) 5.5 x 10 ^ -2 MD) 1.0 x 10 ^ -14 M
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Glycolysis is the process by which energy is harvested from glucose by living things. Several of the reactions of glycolysis are thermodynamically unfavorable (nonspontaneous), but proceed when they are coupled with other reactions. Reaction A: Pi+glucoseglucose-6-phosphate+H2OG=13.8 kJ/mol Reaction B: Pi+fructose-6-phosphatefructose-1,6-bisphosphate+H2OG=16.3 kJ/mol Reaction C: ATP+H2OADP+PiG=30.5 kJ/mol Select every unfavorable reaction. reaction B reaction C reaction A Select every set of coupled reactions where the overall reaction is favorable. reactions B and C reactions A and B reactions A and C What is the net change in free energy if one set of reactions from the previous question is coupled so that the overall reaction is favorable? Note that if you selected more than one set of coupled reactions as favorable in the previous question, you may enter the net change for any one of your selected sets.
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which substance increases in solubility as the temperature decreases
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* Ill give you brainlist* The skeletal system has many functions. Which of the following body functions does the skeletal system NOT do?
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A molecule of which compound has a multiple covalent bond?1. CH42. C2H43. C3H84. C4H10
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why is maple syrup more diluted than maple sap
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The alcohol functional group is composed of elements
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Why would a plant use the energy and resources to grow a fruit?
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Boiling water is an example of what type of what type of thermal energy transfer?convectionconductioninsulationradiation
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A 99.8 mL sample of a solution that is 12.0% KI by mass (d: 1.093 g/mL) is added to 96.7 mL of another solution that is 14.0% Pb(NO3)2 by mass (d: 1.134 g/mL). How many grams of PbI2 should form?Pb(NO3)2(aq) + 2 KI(aq) PbI2(s) + 2 KNO3(aq)
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Please help! BRANLIEST to right answer
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