Scientific knowledge is constantly being refined and changed as scientists perform studies using the scientific method. New discoveries such as the recent discovoery of water on Mars, cause scientists to re-evaluate their previously held theories.
Explanation:
A chemical property is defined as the property that brings changes in chemical composition of a substance.
For example, flammability, combustion, reactivity, electronegativity etc are allchemical properties.
On the other hand, a property that does not bring any change in chemical composition of a substance is known as a physical property.
For example, shape, size, mass, density etc are all physical properties.
Thus, we can conclude that these may all be classified as chemical properties of a substance.
Answer:
0.4777 cm³
Explanation:
Molar mass is defined as the mass of 1 mole of the substance.
The molar mass fo Ag is 107.8682 g/mol
Since, 1 mole of Ag contains 6.022×10²³ molecules of Ag
So,
6.022×10²³ molecules of Ag has a mass of 107.8682 g
Also,
1 molecule of Ag has a mass of 107.8682/6.022×10²³ g
2.8×10²² molecules of Ag has a mass of (107.8682/6.022×10²³)×2.8×10²² g
Mass of 2.8×10²² molecules = 5.0155 g
Given that density = 10.5 g/cm³
Volume = ?
So, volume:
<u>Volume = 0.4777 cm³</u>
D. measure the mass and volume of the substance, then divide the mass by the volume<span />