How many mL of 0.150 M NaOH are needed to neutralize 50.00 mL of a 0.120 M solution of H2SO4?

Define 3-phenylpropanal is allowed to mix : Show the product that forms when 3-phenylpropanal is allowed to mix with sodium hydroxide catalyst. |

Evaluate the magnification of the lens : An object is placed 55.5 cm from a screen. Where should a converging lens of focal length 8.0 cm be placed to form an image on the screen, Find the magnification of the lens |

Compute the equivalency point and the ph : A 15 mL sample of 0.100 M Ba(OH)2 is titrated with 0.12M HCl. Calculated the equivalency point, and the pH after 5mL, 10 mL, 15 mL, and 20 mL of HCl are added. |

Evaluate the position and height of the final image : A 1.00-cm-high object is placed 3.80 cm to the left of a converging lens of focal length 7.50 cm. Find the position and height of the final image |

How much naoh are needed to neutralize solution of h2so4 : How many mL of 0.150 M NaOH are needed to neutralize 50.00 mL of a 0.120 M solution of H2SO4 |

What is the speed of the box at the equilibrium position : A 5 kg mass is connected to a spring (1000 N/m) platform which undergoes simple harmonic motion in the vertical direction with two complete oscillations each second. What is the speed of the box at the equilibrium position |

How much force must you exert to keep the pole motionless : You're carrying a 4.0-m-long, 23kg pole to a construction site when you decide to stop for a rest. How much force must you exert to keep the pole motionless in a horizontal position |

Determine the new angular velocity of the two astronauts : Two astronauts of equal mass 92 kg are holding on to opposite ends of a straight rope in space. The length of the rope between them is 18 meters. What is the new angular velocity of the two astronauts |

What is the maximum gain in height of the hoop : A hoop and a disk (both of mass 2 kg and radius of 0.3 m) roll without slipping up a straight incline with an initial velocity of 3.2 m/s. What is the maximum gain in height of the hoop |

## Define the nitrate ion reaction is positiveThe nitrate ion reaction is positive. In this case, is it accurate to state that nitrate ion was present in the original solution? Brie?y explain, referencing specific chemical reactions to support your explanation. |

## Explain what quantity of heat is required to changeWhat quantity of heat is required to change 40.0 g of ice at melting point to liquid water? The heat of fusion of ice is 335 J/g. The answer should be 13400 J Please include steps in solving |

## State acetone or methanol will give the best seperationWhich of the following solvents, hexane, methylene chloride, acetone, or methanol will give the best seperation on a TLC plate of a mixture composed of |

## Find the final temperature of the water70g of ice at 0 degrees celcius. is added to 355mL of water at 25 degrees celcius. Find the final temperature of the water when the ice is fully melted |

## Depict the structure of an organic compoundDraw the structure of an organic compound: a. that has the formula C7H12O and has peaks at 2950 cm-1, 2750 cm-1, and 1745 cm-1 in it's IR spectrum. |

## Explain what is the h3o+ in a buffer that consistsWhat is the [H3O+] in a buffer that consists of 0.30 M HCOOH and 0.20 M HCOONa? Ka=1.7x10^-4 |

## Compute the effective charges on the o and h atomsThe bond distance and dipole moment calculated for the highly reactive gas phase OH molecule are 0.98Ao and 1.78D, respectively. Compute the effective charges on the O and H atoms of the OH molecule (in units of the electronic charges). |

## How many kilocalories are needed to heat the waterA hot tub is filled with 470 gallons of water, which has a density of 1.0. How many kilocalories are needed to heat the water from 67 to 109? |

## Evaluate the molar mass in g/mol of the elementAn element crystallizes in a body-centered cubic lattice. The edge of the unit cell is 3.06 , and the density of the crystal is 7.01. Calculate the molar mass (in g/mol) of the element. |

## Evaluate the molar heat of combustion of fructoseCalculate the molar heat of combustion of fructose using the data from this experiment. Since this experiment is carried out under conditions of constant volume, we are measuring ?E. Your answer should be in kJ/mol and entered to 3 sig. fig. |

## Calculate the mass of honh2 required to dissolveCalculate the mass of HONH2 required to dissolve in enough water to make 250.0 ml of solution having a pHof 10.00 (Kb=1.1*10 (-8). |

## What is the energy of the transitionCO exhibits an infrared absorption band at 2143 cm^-1 that is attributed to the symmetric stretching transition. Assuming this corresponds to a transition from the v=0 to v=1 vibrational quantum number |

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