one gram of sodium chloride is taken in a clean and dry test tube and 2 ml of concentrated sulphuric acid is added to it. if the gas evolved is tested with dry and then with a wet blue Litmus Paper in which case Litmus Paper change colour? give reason .write chemical equation for the reaction.​

This drawing shows a human body system. what is the primary function of this body system?

Which number should be placed before f2 on the reactants side equation to make equation balanced? xe + > xef4

For part 1, describe the changes in the colors of the well, if any, as you go from well 1 to well 9—that is, as you go from the well with the least copper(ii) nitrate to the well with the most copper(ii) nitrate. which wells had the most distinct precipitate? for part 2, describe the changes in the colors of the well, if any, as you go from well 1 to well 9—that is, as you go from the well with the least iron(ii) sulfate to the well with the most iron(ii) sulfate. which wells had the most distinct precipitate? for part 3, describe the changes in the colors of the well, if any, as you go from well 1 to well 9—that is, as you go from the well with the least iron(iii) nitrate to the well with the most iron(iii) nitrate. which wells had the most distinct precipitate?