Which statement describes a chemical property of water?
it reacts with sodium metal.
it has a melting point of 0°c.
it has a density of about 1 g/ml.
it is clear and colorless.

The statement that describes a chemical property of water is this: IT REACT WITH SODIUM METAL.

Substances generally have two types of properties, these are chemical and physical properties. Physical properties of matters refer to those characteristics of matter which can be observed without changing the composition or nature of the matter. Examples of physical properties are color, boiling point, melting point, etc. Chemical properties on the other hand are those properties that can only be observed by changing the chemical nature of the substance. For instance, the chemical reaction of a substance with another substance will showcase the chemical properties of those substances.

The answer is C.) It reacts with sodium metal.

Explanation:

explanation:

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2