PLEASE HELP ASAP During convection heat is transferred through fluids. Which statement is true about fluids?

Only gasses are fluids
Only liquids are fluids
Only solids are fluids
Both liquids and gasses are fluids

Blank allows you to do calculations for situations in which only the amount of gas is constant a)boyle's law b)combined gas law c)ideal gas law d)dalton's law

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

What is the correct equation for cellular respiration?