Explain why a coin is able float on top of the water

Which of the following is NOT soluble in water? Why? A) NaCl B) KBr C) CH3CH2OH D) HCl E) C6H6

How does a hypotonic solution affect a red blood cell? How does it affect a gram positive bacterial cell?

Ethanol is not usually a solvent used for sn2 reactions, why not? can you predict an undesirable side reaction that might occur using the ethanol as a solvent that would not occur if we used thf as a solvent?

The combustion of 5.00 grams of c2h6 (g), at constant pressure releases 259 kj of heat. what is δh for the reaction: 2c2h6 (g) + 7o2 (g) = > 4co2 (g) + 6h2o (l) ?

Why do the atoms in a piece of copper metal have no net charge?

Explain why a balloon filled with O2 at room temperature collapses when cooled in liquid nitrogen where as balloon filled with He does not

Which mixture can be separated by using the equipment shown below?

El agua de Mar es una mezcla homogenea o disolucion Y El agua corriente Y El aire Y LA lejia Y Los refrescos con gas Y El suero fisiologico Y Las monedas Y LA leche Y LA gelatina Y Los productos de higiene Y El merengue

The component which dissolves in a solution is called the ...

If this fossil is 65 million years old, what could this fossil suggest about organisms alive today? A. If it is similar to any two modern species, it could be a common ancestor of these species. B.