0.5 g of salt is dissolved in 25 g of water. Calculate the percentage amount of salt in the solution.

What is the speed of an ocean wave that has a wavelength of 0.30 M and a frequency of 1.80 HZ

Assuming dopant atoms are uniformly distributed in a silicon crystal, how far apart are these atoms when the doping concentrations are 5.0x1015 cm-3 and 5.0x1020 cm-3?

What is the ratio Al 3 + ions to S 2 - ions in a neutral compound

The total kinetic energy of all the molecules that make up a sample is called the: -Convection -Heat Energy -Kelvin -Thermal Energy

Kinetic energy differs from chemical energy in that

What does ice cream melt on a hot day which type of thermal energy transfer does this melting represents

For which purpose do biochemists insert human genes into bacteria? to find a cure for the common cold to produce insulin for diabetics to kill resistant strains of bacteria to evolve certain species of bacteria

Cracks in rocks chemical or mechanical

A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins. A) 0.5 sec B) 0.3 sec C) 2.3 sec D) 1.9 sec

Given 4.80g of ammonium carbonate, find: Number of moles of the compound Number of moles of ammonium ions Number of moles of carbonate ions Number of moles of hydrogen atoms Number of hydrogen atoms