The temperature at which phase changes occur is highly dependent on the electrostatic forces between the molecules in the substance.
The forces that hold molecules together are called intermolecular forces. These intermolecular forces affect the temperature at which phase changes occur. The statement about phase changes and electrostatic forces that is correct is that; "the temperatures at which a substance changes phases indicate the relative strength of the forces between molecules in the substance."
There are three states of matter, solid liquid and gas. The order of intermolecular forces in all the states of matter are not the same. The order of strongest collective electrostatic forces to weakest collective electrostatic forces is; solid, liquid, gas.
When water boils, the forces between water molecules break, and the bonds between the atoms in water are unchanged.
When a sample of calcium carbonate is cooled, the forces strengthen, and the molecule structure becomes more rigid.
If the boiling point of acetone is lower than the boiling point of ethanol, then, the intermolecular forces in ethanol are stronger than the intermolecular forces in acetone.
Learn more about phase changes: brainly.com/question/671212
Answer:
The reaction rate or rate of reaction is the speed at which a chemical reaction takes place, defined as proportional to the increase in the concentration of a product per unit time and to the decrease in the concentration of a reactant per unit time. Reaction rates can vary dramatically.
Answer:
Explanation:
Potential energy builds as the coaster is going up the loop-the-loop and converts to kinetic energy on the way down and out of the loop-the-loop. The potential energy of the coaster is at its lowest and the kinetic energy is at its highest as the coaster moves in the lowest point of the loop-the- loop.
In the following compound of sucrose the atoms are as follows:
Carbon - 12 atoms
Hydrogen - 22 atoms
Oxygen - 11 atoms.
We will call D1 and D2 the volume of dextrose at 2.5% and 30% respectively
D1 + D2 = 500 (1)
D1*2,5/100 + D2*30/100 = 500*10/100 (2)
(2,5D1+30D2)/100 = 50
2,5D1 +30D2 = 50*100 = 5.000 (2)
D1 = 500 - D2 Now we clear D1 in (1)
2,5(500-D2) + 30D2 = 5.000 and we substitute in (2)
1.250 - 2,5D2 + 30D2 = 5.000
27,5D2 = 5.000 - 1.250 = 3.750
D2 = 3.750/27,5 = 136ml +4/11ml
D1 = 500ml - 136ml +4/11ml
D1 = 363ml +7/11ml
ANSWER 363ml+7/11 ml of dextrose 2,5% and 136ml+4/11 ml dextrose 30%
