Answers created by Sarita Rana

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• How to separate flour and iron fillings?
  
• What is the molarity of a solution made by dissolving 4.88 g of KCl in 423 mL of solution?
  
• Question #41687
  
• 3.01e22 Ag+ ions is present in? options a) 85 grams of AgNO3 b) 0.85g AgNO3 c) 8.5g AgNO3 d) 18.5g AgNO3
  
• Question #91b45
  
• What is the freezing point of a nonionizing antifreeze solution containing 388g ethylene glycol #C_2H_6O_2# and 409 g of water?
  
• Question #9f6eb
  
• How many electrons are found in a sample of dioxygen gas contained in a #"0.448 L"# container at STP?
  
• Solid arsenic reacts with Oxygen gas to synthesize solid arsenic trioxide. How many moles of arsenic trioxide will be produced from 3.4 moles of oxygen gas?
  
• At what temperature in Celsius will 19.4 g of molecular Ozone exert a pressure of 1820 mmHg in a 5.12 L cylinder?
  
• What number is considered neutral on the pH scale?
  
• Question #04d04
  
• Question #904a3
  
• Question #d33e2
  
• 15g of copper(ii) chloride reacts with 20g of sodium nitrate. Calculate the mass of sodium chloride formed?
  
• Question #fb091
  
• Question #addd0
  
• What are the two types of energy changes that can occur in a chemical reaction?
  
• Question #0222b
  
• What is the basic formula for a binary acid?
  
• How do you balance #Fe(s) + S(s) -> Fe_2S_3(s)#?
  
• Question #1827a
  
• Question #669e0
  
• Why must we mention the oxidation state of iron in iron oxide?
  
• Question #08218
  
• What is the disproportionation reaction of #H_3PO_3#?
  
• Question #ac033
  
• Question #0dfe4
  
• What are the molarity, molality, and mole fraction of ethylene glycol (#"C"_2"H"_6"O"_2#) in an aqueous solution that contains 40 % by mass of the solute? The density of the solution is #"1.06 g/mL"#.
  
• Question #d66e3
  
• What is the equation for freezing point?
  
• Question #ddb45
  
• Question #94034
  
• Is cooling hot water an exothermic process or an endothermic process?
  
• What occurs when two or more nonmetals share valence electrons?
  
• Question #e5a81
  
• What is nickel's electron configuration?
  
• What will the acid always have extra?
  
• Question #f9abf
  
• What is a reaction in which all the reactants form only products called?
  
• Question #c6bc1
  
• What does the kinetic theory state?
  
• How do aldehydes affect bacteria?
  
• Question #7b1dc
  
• What is the ground-state electron configuration of a neutral atom of helium?
  
• Question #efc3c
  
• What does a chemical's MSDS tell you?
  
• What do the formulas for table salt, #NaCl#, and water, #H_2O#, indicate about these compounds?
  
• Determine the final pH of a 0.200M triprotic phosphoric acid solution?
  
• Question #058cb
  
• Question #225d9
  
• What family is iron in?
  
• What type of chemical reaction will absorb more energy than it releases?
  
• What element has a mass number of 40?
  
• Which of the beryllium halides, if any, are considered ionic compounds?
  
• What element has atomic number of 9?
  
• Where do trees obtain carbon from?
  
• Question #9bc1e
  
• Why is vinyl carbocation unstable?
  
• Certain elements have special affinities for other elements. This causes them to bind together in special ways to form what?
  
• What type of chemical bond are found between water molecules?