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Question #9b627 + Example - Socratic Changes in state are physical changes Let's take water as an example H2O In the gaseous state, we sometimes call it steam or water vapor; it's chemical formula is still H2O In the liquid state and in the solid state (ice), the chemical formula is H2O In a physical change, the original substance is still there - it may be in a different state or shape, but there are no new substances
What is a double replacement reaction? How are they . . . - Socratic The clue lies in the name itself Double displacement reactions occur when two ionic compounds react, or when an ionic compound reacts with an acid It only occurs in liquids There are 5 types of double displacement reaction, as shown below: Salt + salt = insoluble salt + salt Acid + carbonate = salt + H2O + CO2 Acid + base = salt + H2O Ammonium + hydroxide = salt + H2O + NH3 Acid + sulfite
Why is H_2 not very soluble in water? | Socratic The trade in energy sucks for H2 (but not so much for water), so the H2⋯H2O interaction is highly unfavored for H2, compared to the H2⋯H2 and H2O⋯H2O interactions So, H2 is very poorly soluble in water Its solubility at 1 atm at 20∘C is 0 00016 g H2 100 g water
Which solution has the highest osimatic pressure? (a) 2g . . . - Socratic Should it not be d ? The number of particles in solution DETRACT from the osmotic pressure And so the LESSER the amount of solute, the LESSER the detraction from osmotic pressure with respect to the pure solvent Of course, we assume the SAME solute in each scenario and thus mass is a good approximation of the number of particles in solution
Through multiple reactions, a chemist uses C, CaO, HCl, and H2O to . . . Through multiple reactions, a chemist uses C, CaO, HCl, and H2O to produce dichlorobenzene, C4H4Cl2 Assuming that the efficiency of this lab is a minimum of 65 0%, how many molecules of dichlorobenzene could be produced in the lab from 0 500 kg of C?
What is the molar mass of water?? - Socratic Each water molecule contains two hydrogen atoms (#M = "1 0079 g mol"#) and one oxygen atom (#M = "15 999 g mol"#) Therefore, the molar mass is: