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Chemistry
Chemistry
High School
gaseous butane ch3ch22ch3 will react with gaseous oxygen o2 to produce gaseous carbon dioxide co2 and gaseous water h2o. suppose 2.32 g of butane is mixed with 4.4 g of oxygen. calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. be sure your answer has the correct number of significant digits.
Chemistry
College
12. What is the most common source of pollution? nuclear gas coalO oil
Chemistry
High School
This is a machine that converts electrical energy into mechanical energy.A. Generator B. MotorC. Electricity(why do my questions keep getting deleted?)
Chemistry
College
Forty miles above the earth's surface the temperature is 290 K and the pressure is only 0.19 mm Hg. What is the density of air (in grams per liter) at this altitude? (Assume the molar mass of air is 29 g/mol.)
Chemistry
High School
the volume of a balloon containing an ideal gas is 3.78 l at 1.05 atm pressure. what would the volume be at 2.75 atm with constant temperature and molar amount? view available hint(s)for part a the volume of a balloon containing an ideal gas is 3.78 l at 1.05 atm pressure. what would the volume be at 2.75 atm with constant temperature and molar amount? 9.90 l 1.44 l 0.764 l 10.9 l
Chemistry
High School
I need to the the answers for the boxes
Chemistry
College
Calculate the mole fraction of HSO in a solution of 583 g of HSO (98.079 g/mol) in 1.50 kg of water (18.0153 g/mol).0.06660.07130.282.12
Chemistry
College
8. Balance the following equation:NH3(g) + F2(g) NF4(g) + HF(g)a. How many moles of each reactant are needed to produce 4.00 moles of HF?b. How many grams of F2 are required to react with 1.50 moles of NH3?c. How many grams of NF4 can be produced when 3.40 grams of NH3 reacts?
Chemistry
High School
What mass of KCO, in grams, is present in 0.273 L of a 0.998 M solution?
Chemistry
High School
sodium hydroxide can react with the solvent, ethanol, in this experiment instead of making the enolate. why is this not a problem?
Chemistry
High School
prepare a solution of the following concentration: 23 micromoles/liter. measure its absorbance at 400 nm. how will you prepare 1 ml of the assigned solution? below, enter the volume of pnp stock solution you will pipette, and the amount of 0.100 m sodium bicarbonate. answer in microliters.
Chemistry
High School
how many mls of a 0.500 m h2so4 solution is needed to react completely with 20.0 ml of 0.395 m naoh? please include 2 decimal places.
Chemistry
High School
the salt of codeine, codeine bromide (c18h21o3nh br- ) has analgesic and antitussive properties. calculate the ph of a 0.324 m codeine bromide solution. pkb of c18h21o3n is 7.95. keep your answer to 3 decimal places.
Chemistry
High School
how many orientations to bh2cl and ch3cl have, respectively
Chemistry
High School
4. What is this called? When the wave is going side to side but has a line in the middle
Chemistry
High School
how would ingsoc translate into oldspeak? explain what it is and how it is used to give ingsoc power.
Chemistry
High School
the major side effect of ingesting activated charcoal is a) vomiting b) headaches c) abdominal pain d) black stools
Chemistry
High School
hydrogen bonding is crucial to the transpiration-cohesion-tension mechanism. true or false
Chemistry
High School
will the rate constant increase, decrease or stay the same if the initial concentration of substance a is doubled? explain
Chemistry
High School
The end point in a titration of a 42ml sample of aqueous (CH3COOH) was reached by addition of 14ml of 0. 2M titrant. The titration reaction is CH3COOH+NaOHCH3COONa+H2O What is the molar concentration of (CH3COOH)?
Chemistry
High School
Michael has not exercised for months, and one day, plays four hours of basketball.That might he complain of the next day?OartheriosclerosisOrhinorrheaO thrombocytopeniaOmyalgia
Chemistry
College
40 grams of KCI are dissolved in 100 mL of water at 45C. How many additional grams of KCI are needed to make the solution saturated at 80 C?
Chemistry
High School
Camphor (C10H16O) has an energy of combustion of -5903. 6 kJ/mol. When a sample of camphor with mass 0. 1204 g is burned in a bomb calorimeter, the temperature increases by 2. 28C. Calculate the mass of water used in the calorimeter in kilograms.
Chemistry
High School
A reaction between gaseous sulfur dioxide andoxygen gas to produce gaseous sulfur trioxidetakes place at 600C. At that temperature,the concentration of SO2 is found to be 1.61mol/L, the concentration of O2 is 1.40 mol/L,and the concentration of SO3 is 3.80 mol/L.Using the balanced chemical equation, findthe equilibrium constant for this system.
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