As the concrete has cement, gravel, crushed rocks, sand, and water of different physical state and can be separated by physical methods hence it should be called as a mixture.

As the components have significant physical boundaries which clearly identify their presence, the mixture is heterogeneous and not homogeneous.

Thus this is a concrete is a heterogeneous mixture of cement, gravel, crushed rocks, sand, and water

8 0

3 years ago

What does electronegativity measure

Rainbow [258]

Electronegativity is a measure of an atom's ability to attract shared electrons to itself. On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group.

3 0

2 years ago

Which number should be placed before H20 on the products side of the equation to

timama [110]

<h2>The required balanced equation:</h2><h2> $C_3H_8 +5O_2 = 3CO_2 + 4H_2O$ </h2>

Explanation:

• Propane when reacts with oxygen it gives carbon dioxide and water.

In order to make the equation balanced at both ends of the equation,

Add 4 as a coefficient before on L.H.S (Left Hand Side) of Equation.

• Therefore, the required balanced equation is:

Propane, when added with 5 molecules of Water, yields 3 molecules of Carbon Dioxide and 4 molecules of water, as shown in the below equation -

$C_3H_8 +5O_2 = 3CO_2 + 4H_2O$

8 0

2 years ago