What is a tough, rigid, outer covering that protects some cells and gives them shape?

Example of ammonium salt

a gas has a volume of 750ml at pressure of 2.15atm what will the pressure be if the volume is 1.25ml

What variable is assumed to be constant when using the combined gas law?

In which state do molecules have the highest kinEric energy

According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas (1) increase the energy content of the gas sample (2) produce strong attractive forces between the gas particles (3) result in a net loss of energy

Most mutagens have what kind of an effect on an organism?

According to the hess's law, the enthalpy of solution is: δhsoln = δhsolute + δhsolvent + δhmix. considering dissolving a small drop of nonpolar pentane oil in water which term (s) in the equation will experience the largest enthalpy change.

Solve for x: ln x = 0.863. Report your answer to 3 significant figures.

What water activities might be easier to do in Lake Assal's salty water? What activities could be more difficult?

The suffix "-megaly in the term gastromegaly means: