The solution for this problem is:
With a mass of 10 mg or convert this into kilograms by:
We know that 1 mg = 1x10^-6 kilograms, so solving this will
give us
10 * 10^ -5 in kilograms.
Then, we compute a force of ma F=ma where m is the mass and
acceleration is m/s^2
F = 0.00001 [(2.5m/s^2)/
(0.16 m)]
= 3.9 * 10 ^ -4 N or F=.0.0004 N
The synthesis of a compound from its elements in their standard state, accompanied by a change in energy that is known as standard enthalpy of formation of a compound. The standard state of a substance is the most stable physical state of the compound that exist at STP that is at 1 atm, 273 K temperature. So the answer is yes, the energy change accompanying the synthesis of a compound from its elements in their standard state.
Answer:
This is a physical change because it's not permanent and no chemical reaction occurs. Mixtures - Mixing together materials where one is not soluble in the other is a physical change. Note the properties of a mixture may be different from its components.
Explanation:
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change there is a difference in the appearance, smell, or simple display of a sample of matter without a change in composition.
In a physical change, the molecules are rearranged while their actual composition remains same. In a chemical change, the molecular composition of a substance completely changes and a new substance is formed. Some example of physical change are freezing of water, melting of wax, boiling of water....