Ummr eendnsje wiwhwbeh shausuwh sosne sheb
Answer:
In a .3M KNO3 solution, the KNO3 is dissolved in water. Water is the solvent and KNO3 is the solute, because the solute is what is dissolved. Also, all potassium compounds and nitrate compounds are soluble, so you know that KNO3 dissociates into K+ and NO3- in water.
A closed circuit will light the bulb because electricity flows through it.
But on the other hand in an open circuit there is no flow of electricity current hence no light is produced
Enthalpy change is the total heat that is absorbed or evolved in a certain reaction that is being carried in a constant pressure system. It can be calculated by the product of the specific heat of the substance ad the difference of the final temperature and the initial temperature. Molar enthalpy change is the heat evolved or absorbed per 1 mole of a substance.The specific heat of water is 4.18 J per gram of water per degree Celsius. We calculate as follows:
Molar enthalpy change = 4.18 J / g - C ( 76.2 C - 41.7 C ) ( 18.02 g / mol ) = 2598.6642 J or 2.6 kJ
Answer:
pH strips and written observations of stream water
Explanation:
