An empty 10-ml volumetric flask weighs 10.267 g. after filling to the mark with distilled water at 20°c, the mass is 20.219 g. what is the mass of water in the flask

A sample of hydrated copper (II) sulfate has a mass of 4.56 g. After heating, it has a mass of 2.92 g. What is the percent by mass of water in the hydrate?

Which lists the carbohydrates in order of increasing chemical energy? a monosaccharides, polysaccharides, disaccharides b disaccharides, monosaccharides, polysaccharides c polysaccharides, disaccharides, monosaccharides d monosaccharides,

one wavelength used by telstar 401 satellite is 7.807 cm. what is the frequency of this light in MHz?

All radioactive nuclides undergo what

When you breathe in and out you're using your lungs

What force (in newtons) is required to accelerate a body with a mass of 32 kilograms at a rate of 12 m/s2? If a body with a mass of 4 kg is moved by a force of 20 N, what is the rate of its acceleration?

A. draw the structure of the tetrahedral intermediate initially-formed in the reaction shown. reactions of esters with

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be

What are the tube feet on a star fish

What kingdom is humans in!