The quantum yield for CO production in the photolysis of gaseous acetone is unity for wavelengths between 250 and 320 nanometers. After 20 minutes of irradiation at 313 nm, 18.4 cm cubed of CO (measured at 1008 pascals and 22 oC ) is produced. calculate the number of photons absorbed, and the intensity in J s-1.

Define the concentration of hemoglobin in the solution : The cuvette used had a 1.00 cm sample pathlength. The measured absorbance was 0.180. What was the concentration of hemoglobin in the solution. What would the absorbance of the previous solution be if the pathlength were 1.80 cm |

What are the forces at the two supports : a 15 m beam is supported (hinged supports) at both ends and is loades with a 50 n weight 4 m from one end and a 100 n weight 8 meters from the same end. what are the forces at the two supports |

Find how many revolutions does the tub turn : The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 2.0 rev/s in 8.0 s. Through how many revolutions does the tub turn during this 21-s interval |

How long will it take for ciny to catch up to david : David is running at a constant speed of 6.0 meters per second when he passes Cindy, who is at rest. How long will it take for Ciny to catch up to David |

How to calculate the number of photons absorbed : After 20 minutes of irradiation at 313 nm, 18.4 cm cubed of CO (measured at 1008 pascals and 22 oC ) is produced. calculate the number of photons absorbed, and the intensity in J s-1. |

Define what''s the precent abundance of ga-71 isotope : The atomic mass of Gallium is 69.72 amu which has two isotopes, Ga-69 (atomic mass= 68.92 amu) and Ga-71(atomic mass= 70.92 amu). What's the precent abundance of Ga-71 Isotope |

Estimate the average bulk modulus of earths crust given : Earthquakes at fault lines in Earth's crust create seismic waves, which are longitudinal (P-waves) or transverse (S-waves). Estimate the average bulk modulus of Earth's crust given |

Define smaller differences observed among the pentanols : Even though butanols have the same number of the same atoms, we see large differences in their ability to dissolve water. How do you account for this? How might you account for the much smaller differences observed among the pentanols |

Estimate the uniaxial compressive and tensile strengths : Estimate C and of the rock mass and estimate the uniaxial compressive and tensile strengths of the rock mass |

## Explain a carbon-containing compound is burned in airIf a 1.00g sample of a carbon-containing compound is burned in air, 0.75g of CO2(the only carbon-containing product) is produced. What is the mass% carbon in the compound |

## Explain geometry of the chromatographic columnTo characterize the elution properties of the solute in a way independent of the geometry of the chromatographic column, the retention constant R = Vo / Ve is used. R is equal to the fraction of solute in the void volume Vo and |

## A 251 ml sample of oxygen is collected over water at 25 dega 251 ml sample of oxygen is collected over water at 25 deg c and 760 torr pressure. if the vapor pressure of water as |

## How many grams of nacl is neededTo make a 325 mL solution of 0.150 M NaCl, how many grams of NaCl need to be weighed out? |

## You are asked to go into the lab and prepare an aceticyou are asked to go into the lab and prepare an acetic acid-sodium acetate buffer solution with a ph of 4.40 plusmn |

## Explain a stronger acid from greatest to leastWhich of these is a stronger acid from greatest to least. I know that CH3COOH, HF, and H3PO4 are weak acids and HI and H2So4 are strong acids. |

## Explain saturated acetone vapor enters a heat exchangerSaturated acetone vapor enters a heat exchanger at a rate of 8.40 L/s and 1 atm, and emerges from the heat exchanger as a saturated liquid at the same pressure. Water at 1 atm enters the heat exchanger at 10.5 C and at a rate of 9.48 mol/s |

## What is the final volumeIf the presure of 50.0 mL of oxygen gas at 100oC increases from 735 mm Hg to 925 mm Hg, what is the final volume? Assume the temperature remains constant. |

## How many total moles of atoms does the sample containA sample of propane,C3H8, contains 13.4 moles of carbon atoms. How many total moles of atoms does the sample contain? |

## Explain biochemical pathway that satisfies each principleFor each of the five principles of biochemistry give an example(step or series) from a biochemical pathway that satisfies each principle |

## State what is the molarity of the acid solutionIf 26.43 mL of a standard 0.1650 M NaOH solution is required to neutralize 25.23 mL of H2SO4, what is the molarity of the acid solution |

## What mass of sodium reactedsample of sodium reacts with 0.497 kg of chlorine forming 819 g of sodium chloride, what mass of sodium reacted |

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd