Answer: triple point.
At the melting point can exist two phases in equilbrium (liquid and solid).
At the boiling point can exist two phases in equilibrium (liquid and gas).
The critical point is the limit at wich gas and liquid can coexist.
And, indeed, at the triple point can solid, liquid and gas can coexist.
Manipulation of the independent variable should change the dependent variable, the value of which "depends" on the independent variable's change in value.
The correct answer is actually
B) energy that flows from warmer objects to cooler objects.
because temperature is a measure of the average amount of energy possessed by an object due to the random motions of its particles. Heat is the energy that flows from warmer objects to cooler objects. Heat cannot flow in the opposite direction.
Answer:
A
Explanation:
Lanthanides share the following common properties: Silvery-white metals that tarnish when exposed to air, forming their oxides. Relatively soft metals. Hardness increases somewhat with higher atomic number.
