Which tectonic plate lies underneath the starred region?African PlateAntarctic PlateEurasian PlateIndo-Australian PlateWhen two tectonic plates converge, the land above sea level in this area often generates –mountain ranges. landslides. hurricanes. tsunamis. Which continental tectonic plate lies underneath the starred region?North American PlateSouth American PlateAfrican PlateEurasian PlateAn image of tectonic plates is provided. Which region of the map represents the Antarctic Plate?WXYZ

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol