Answer:
(4) The physical and chemical properties of these minerals determine how humans use them.
Explanation:
All the materials and the metals found on earth shows certain characteristics naturally or in their physical state. These physical characteristics can be their look, their structure, their color, strength, melting point, boiling point, density, etc.
And chemical properties of the metals are defined as those characteristics or features of the metals that it exhibits when these metals reacts chemically.
The physical properties as well as the chemical properties distinguishes each metal from each other. These properties determines how people use these metals in their life.
Answer:
The heat flows into the gas during this two-step process is 120 cal.
Explanation:
Given that,
Number of moles = 3
Heat capacity at constant volume = 4.9 cal/mol.K
Heat capacity at constant pressure = 6.9 cal/mol.K
Initial temperature = 300 K
Final temperature = 320 K
We need to calculate the heat flow in to gas at constant pressure
Using formula of heat

Put the value into the formula


We need to calculate the heat flow in to gas at constant volume
Using formula of heat

Put the value into the formula


We need to calculate the heat flows into the gas during two steps
Using formula of total heat



Hence, The heat flows into the gas during this two-step process is 120 cal.
<span>From an area of higher conentration to an area of lower concentration which is B. my friend. Hoped i helped.
</span>
Answer:
TERMINUS ANTE QUEM
Explanation: Terminus ante quem is an Archeological an a Latin term used to describe the date before which an event or events took place,it is also used to show the date before which Archeological works have been deposited in a given area.
Example, a pottery dating to the 4th century AD found on a surface would give that pottery with a terminus ante quem of the 4thcentury AD.
This type of cross dating can either be TERMINUS ANTE QUEM OR TERMINUS POST QUEM.
♥ 13%=0.13
14400-0.13
Solve: 14399.87
Answer: <span>14399.87</span>