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If 18.0mL of 0.800 M HCl solution are needed to neutralize 5.00 mL of a household ammonia solution, what is the molar concentration of the ammonia?
Use conservation of energy to determine the angular speed of the spool. After the 3.00 bucket has fallen 3.65 meters, starting from rest. The light sting attached to the bucket is wrapped around the
A 126 piece of metal is heated to 285 and dropped into 83.0 of water at 26. If the final temperature of the water and metal is 58.3, what is the specific heat of the metal?
If 1.50 g of X reacts with 3.54 g of M to produce 5.04 g of a compound with the formula M4X3 and the atomic mass of M is 48.5 amu, what is the atomic mass of X?
When a 1.50 g sample of aluminum metal is burned in an oxygen atmosphere, 2.83 g of aluminum oxide are produced. However, the combustion of 1.50 g ultrafine aluminum in air results in 2.70 g of a p
Find the work she does on the flight bag. Find the work done by the force of friction on the flight bag. Find the coefficient of kinetic friciton between the flight bag and the floor.
A bungee jumper with mass 68.0 jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 49.0 . He finally comes to rest 23.0 belo
Calcium sulfide has a face-centered cubic unit cell with calcium ions in octahedral holes. If the radius of sulfide ion is 184pm and the density of CaS is 2.60 g/cm3, what is the radius of the calc
A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacts completely with Cl2 to give a mixture of HCl and DCl. The HCl and DCl were then dissolved in pure H2O to make a 1.00 L solution. A
Calculate the molecular rms speeds of He atoms at 10, 100, 1000 K in units of meters per second and miles per hour.
A curve with a 125 m radius on a level road is banked at the correct angle for a speed of 20 {rm m/s}.If an automobile rounds this curve at 30 {rm m/s}, what is the minimum coefficient of static fri
The absorption spectrum of chlorophyll a has maxima at 663 and 420 nm. What colors correspond to these wavelengths? What color will be seen reflected by an object with this absorption spectrum?
A hunter wishes to cross a river that is 2.3 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect
A portable electric water heater transfers 225 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in nanoseconds) will it take for the water to heat 5.5 L of water from 298.15 K
Then swinging the thermometer back and forth in air. it is observed that the the wet-bulb thermometer is always less than or equal to the dry-bulb temperature. explain why?
What is the formula for the acceleration a of the hanger in terms of the tension T, the hanger's mass m, and the acceleration of gravity g?
A 545 g ball swings in a vertical circle at the end of a 1.3 m-long string. When the ball is at the bottom of the circle, the tension in the string is 14 N. What is the speed of the ball at that po
A jetliner, traveling northward, is landing with a speed of 63.8 m/s. Once the jet touches down, it has 763 m of runway in which to reduce its speed to 11.2 m/s. Compute the average acceleration (ma
If 3.40 g of copper was recovered and you started with 7.05 g of copper (II) chloride, then what is the percent yield of the reaction ?