Homework - PHA Science
... of 2.175 g of lysine gave 3.94 g CO2 and 1.89 g H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. a) Calculate the empirical formula. b) If the molar mass is about 150 g, calculate the molecular formula. ...
... of 2.175 g of lysine gave 3.94 g CO2 and 1.89 g H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. a) Calculate the empirical formula. b) If the molar mass is about 150 g, calculate the molecular formula. ...
Chemical Thermodynamics : Georg Duesberg
... Boundary condition: ground level pressure is p0 so that p = p0 exp(-Mgh/RT) An exponential decrease of p with height. Equal Δh's always give the same proportional change in p. Note the assumptions: ...
... Boundary condition: ground level pressure is p0 so that p = p0 exp(-Mgh/RT) An exponential decrease of p with height. Equal Δh's always give the same proportional change in p. Note the assumptions: ...
Keq Assignment
... 5. For the reaction: carbon monoxide burns in oxygen to produce carbon dioxide You are given the following equilibrium conditions: [O2] = 1.30 × 10-3M [CO2] = 2.50 × 10-4M Keq = 3.60 × 10-3M Write the balanced equilibrium equation and calculate [CO] ...
... 5. For the reaction: carbon monoxide burns in oxygen to produce carbon dioxide You are given the following equilibrium conditions: [O2] = 1.30 × 10-3M [CO2] = 2.50 × 10-4M Keq = 3.60 × 10-3M Write the balanced equilibrium equation and calculate [CO] ...
practice problems of chap4_5 - Chemistry
... need to get the molar mass of the compound first. M=dRT/P=mRT/VP =0.100g*0.082 L• atm / (mol • K)*(20+273.15)K/[(22.0/1000)L*1.02atm]=107.1g/mole. The molar mass of the empirical formula SF4 is 32.07+4*19.00=108.07g/mole. This is very similar to the calculated value 107.1g/mole. So the molecular for ...
... need to get the molar mass of the compound first. M=dRT/P=mRT/VP =0.100g*0.082 L• atm / (mol • K)*(20+273.15)K/[(22.0/1000)L*1.02atm]=107.1g/mole. The molar mass of the empirical formula SF4 is 32.07+4*19.00=108.07g/mole. This is very similar to the calculated value 107.1g/mole. So the molecular for ...
CML738 Elias 2017 fluorine chemistry
... 2. Size wise, fluorine and hydrogen mimic each other and the van der Waals radii of fluorine (1.35 Å) is close to that of hydrogen (1.10Å) which translates to the fact that only limited extra steric demands are present on the receptor sites by an exchange of H by F. 3. The C-F bond distance (1.26-1. ...
... 2. Size wise, fluorine and hydrogen mimic each other and the van der Waals radii of fluorine (1.35 Å) is close to that of hydrogen (1.10Å) which translates to the fact that only limited extra steric demands are present on the receptor sites by an exchange of H by F. 3. The C-F bond distance (1.26-1. ...
Question 2
... Sodium hydrogen carbonate, NaHCO3, combines with HCl as indicated below. NaHCO3(aq) + HCl(aq) NaCl(aq) + CO2(g) + H2O(l) a) What volume of 1.5M HCl solution should be present to combine totally with 0.14 moles of NaHCO3? b) How many moles of CO2 are produced when 0.49 g of NaHCO3 combines with exc ...
... Sodium hydrogen carbonate, NaHCO3, combines with HCl as indicated below. NaHCO3(aq) + HCl(aq) NaCl(aq) + CO2(g) + H2O(l) a) What volume of 1.5M HCl solution should be present to combine totally with 0.14 moles of NaHCO3? b) How many moles of CO2 are produced when 0.49 g of NaHCO3 combines with exc ...
THERMOCHEMISTRY or Thermodynamics
... • Be careful not to confuse these values with STP. Thermochemical standard states of matter – For pure substances in their liquid or solid phase the standard state is the pure liquid or solid. – For gases the standard state is the gas at 1.00 atm of pressure. • For gaseous mixtures the partial press ...
... • Be careful not to confuse these values with STP. Thermochemical standard states of matter – For pure substances in their liquid or solid phase the standard state is the pure liquid or solid. – For gases the standard state is the gas at 1.00 atm of pressure. • For gaseous mixtures the partial press ...
1044771584 - Papacambridge
... (a) (i) Write the chemical equation for the reaction of ammonia with hydrogen chloride. ...
... (a) (i) Write the chemical equation for the reaction of ammonia with hydrogen chloride. ...
AP Chem II Instructor: Mr. Malasky Name Period ______ Due Date
... ____ 5. The value of ΔG˚ at 25˚C for the decomposition of gaseous sulfur dioxide to solid elemental sulfur and gaseous oxygen, SO2(g) → 2 S (s,rhombic) + O2(g) is __________ kJ/mol. A) +395.2 B) +269.9 C) -269.9 D) +300.4 E) -300.4 ____ 6. The value of ΔG˚ at 25˚C for the formation of POCl3 from it ...
... ____ 5. The value of ΔG˚ at 25˚C for the decomposition of gaseous sulfur dioxide to solid elemental sulfur and gaseous oxygen, SO2(g) → 2 S (s,rhombic) + O2(g) is __________ kJ/mol. A) +395.2 B) +269.9 C) -269.9 D) +300.4 E) -300.4 ____ 6. The value of ΔG˚ at 25˚C for the formation of POCl3 from it ...
Atomic and molecular vibrations correspond to excited
... Same lapse rate > moist adiabatic lapse rate (Thunderstorm) ...
... Same lapse rate > moist adiabatic lapse rate (Thunderstorm) ...
The Atmosphere Atmospheric structure
... Same lapse rate > moist adiabatic lapse rate (Thunderstorm) ...
... Same lapse rate > moist adiabatic lapse rate (Thunderstorm) ...
Industrial gas
Industrial gases are a group of gases that are specifically manufactured for use in a wide range of industries, which include oil and gas, petrochemicals, chemicals, power, mining, steelmaking, metals, environmental protection, medicine, pharmaceuticals, biotechnology, food, water, fertilizers, nuclear power, electronics and aerospace. Their production is a part of the wider chemical Industry (where industrial gases are often seen as ""speciality chemicals"").The principal gases provided are nitrogen, oxygen, carbon dioxide, argon, hydrogen, helium and acetylene; although a huge variety of gases and mixtures are available in gas cylinders.The industry producing these gases is known as the industrial gases industry, which is seen as also encompassing the supply of equipment and technology to produce and use the gases.Whilst most industrial gas is usually only sold to other industrial enterprises; retail sales of gas cylinders and associated equipment to tradesmen and the general public are available through gas local agents and typically includes products such as balloon helium , dispensing gases for beer kegs, welding gases and welding equipment, LPG and medical oxygen. Very small scale gas supply is not confined to just the industrial gas companies. A wide variety of hand-carried small gas containers, which may be called cylinders, bottles, cartridges, capsules or canisters are available to supply LPG, butane, propane, carbon dioxide or nitrous oxide. Examples are whippets, powerlets, campingaz and sodastream.