Which one of the following was the first to develop a system of plumbing, irrigation and subterranean rooms for their palaces?

Which one of the following is True about Egyptian culture?

Based on the pictures below, identify: Title: Medium/material: Culture produced this: Century/Date: then analyze historical importance of this work, a name of deity which this is dedicated to and what the deity presents, then describe what’s depicted here.                                        

From the documentary, Paleolithc Cave Arts in Northern Spain, El Castillo Cave, the geographical location of Mt. El Castillo provided rich source of food for the herds of wild animals which also led to the nomadic hunters and gathers to move to this location following the herds.

Based on the picture seen below, identify: Title of art: Material/medium used to create this: Name of culture associated: Date/century: then analyze its historical importance, importance about the use of material to create this work, then describe a meaning of hierarch scaling and how it is used in this work.  

A solution is made by mixing 569 mL of water and 238 mL ethanol. What is the concentration of ethanol in units of volume/volume percent?

Which value (if any) in each pair corresponds to a slower reaction?

Phosphine, PH3, a reactive and poisonous compound, reacts with oxygen as follows:                    4PH3(g) + 8O2(g) → P4O10(s) + 6H2O(g)If you need to make 6.5 moles of P4O10 , how many moles of PH3 is required for the reaction?

A flask contains two compartments (A and B) with equal volumes of solution separated by a semipermeable membrane. Which diagram represents the final level of the liquids if A is initially a 10% (w/v) glucose solution and B is initially a 20% (w/v) glucose solution?

Which sample contains the largest number of molecules?