300 g of water at 45°C are poured into an 800-g aluminum container with an initial temperature of 10°C. The specific heat of aluminum is 900 J/(kg·K). What is the final temperature of the system, assuming no heat is exchanged with the surroundings? The specific heat of water is 4186 J/(kg·K).

Calculate the amount of ice melted : Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 14 g and the mass of ice is 51 g. g °C |

Explain the ionic compound nf4sbf6 : Reaction between NF3, F2, and SbF3 at 200 degrees C and 100 atm pressure gives the ionic compound NF4SbF6: Nf3(g) + 2F2(g) + SbF3(g) -> NF4SbF6 (s) |

What is the maximum altitude she attains : A ski jumper starts from rest 59.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 16.0 m above the ground, What is the maximum altitude she attains after leaving the t.. |

Explain the differences in bonding between the ions : The corresponding nitrogen-containing anion NO4^3, is unstable but can be prepared by reacting sodium nitrate with sodium oxide at 300 degrees C. Draw Lewis structures for each anion. What are the differences in bonding between these ions |

Evaluate the final temperature of the system : 300 g of water at 45°C are poured into an 800-g aluminum container with an initial temperature of 10°C. The specific heat of aluminum is 900 J/(kg·K). What is the final temperature of the system |

Define the heat capacity of the calorimeter : A 6.55 g sample of C6H5NH2 was combusted in a bomb caloriemeter. If the temp rose by 32.9 degreese C use the info below to determine the heat capacity of the calorimeter (Ccal) |

Find what is the change in the area of the hole : The coefficient of linear expansion of copper is 17 × 10-6 K-1. A sheet of copper has a round hole of radius 1.5 m cut out of it. what is the change in the area of the hole |

Estimate the angular acceleration of the ferris wheel : A Ferris wheel is moving at an initial angular velocity of 1.0 rev/39 s. If the operator then brings it to a stop in 3.3 min, what is the angular acceleration of the Ferris wheel |

Explain what amino acids will be placed in the peptide chain : What amino acids will be placed in the peptide chain for the following portion of DNA? CCA-TGA-TCC-CTT-AGA. A. Gly-Thr-Arg-Glu-Ser |

## What is the length of the race in metersA tortoise can run with a speed of 0.14 m/s, and a hare can run 20 times as fast. What is the length of the race in meters |

## Explain how fast was the ball moving when it left racquetTo clear the net, the ball must rise at least 0.294 m. If the ball just clears the net at the apex of its trajectory, explain how fast was the ball moving when it left the racquet? |

## How much energy is pulled in from the hot reservoirSuppose a heat engine has an efficiency of 0.248 and produces 1.88×10^4 J of work. How much energy is pulled in from the hot reservoir |

## Draw a picture showing all the forces on the ball whileA 5 kg ball is thrown upward with an initial speed of 30 meters per second. Suppose there is a constant air resistance of 25N opposing the motion during its entire up and down path Draw a picture showing all the forces on the ball while it is on t.. |

## How much ice needs to be added to your coolerAs an eager scientist on a hot summer day you wish to determine how much ice to buy to add to your cooler which is filled with 3.0x10^1 cans of soda which are warm at 86.5F. how much ice needs to be added to your cooler |

## What mass of sand may be put on the raft without it sinkingA 1200kg car rounds a curve of radius 65 m banked at an angle of 14degrees. if the car is traveling at 30km/hr, will a friction force be required? if so, how much and in what direction. |

## What is the pressure in the persons lungsA simple test to determine the capabilities of a person's lungs is to have the person blow with full force into one end of a manometer. What is the pressure in the person's lungs |

## What is the magnifying power of a telescopeReflecting telescopes make use of a concave mirror, in place of the objective lens, to bring the distant object into focus. What is the magnifying power of a telescope |

## Question1a subway train starting from rest leaves a stationquestion1a subway train starting from rest leaves a station with a constant acceleration. at the end of 9.34 s it is |

## Find its maximum altitudeA catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.8 m/s at ground level. What is its maximum altitude |

## Find what is the current drawn by the heaterA 5000 W electric heater is used for 32 hours. Calculate the energy consumed in this period. The plates are seperated by a distance of .100 mm. what is the current drawn by the heater |

## Determine the force exerted by the wood on the bulletdetermine the force exerted by the wood on the bullet. |

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