ba) Look carefully at the following equations and then decide what you can say about the position of the metal X in the X reactivity series. Explain your reasoning. X(s) + 2HCl(aq) → XCl (aq) + H2(g) X(s) + CuSO (aq) → XSO (aq) + Cu(s) X(s) + FeSO,(aq): no reaction b) Decide whether X will react with the following substances. If it will react, write down the names of the products. (i) silver nitrate solution, (ii) zinc oxide, (iii) cold water, (iv) copper(II) chloride solution, (v) dilute sulfuric acid.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

c8h10 is your answerr