For a reaction: Ca(OH)₂ + 2NH₂Cl → CaCl₂ + 2NH₂ + 2H₂O

The reaction is carried out by mixing 7 g of pure (Ca(OH)₂ and 7 g of pure NHCI
(a) Find the limiting reactant.
(b) Calculate the mole of unreacted reactant left over.
(c) How many grams of CaCl, are formed? (d) What volume of NH, gas are produced at 27°C and 1.5 atmospheric pressure?

Ca(OH)₂ + 2NH₂Cl → CaCl₂ + 2NH₂ + 2H₂O

one state would change   like louisiana to texas. thats a change

explanation:

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