Answer:
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Answer:
2nd
Explanation:
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Alkali metals is chemicals elements found In the Periodic tables Alkali metals have included Sodium Potassium Rubidium Cesium And Francium as for Earth metals they are beryllium magnesium calcium strontium barium and radium.
Answer:
The molar amount of gas.
Explanation:
According to the ideal gas law,
PV = nRT
P = pressure of gas
V = volume of gas
n = number of moles of gas
R = ideal gas constant
T= temperature of gas
When pressure, volume and temperature of gas is known the molar amount of gas can be determine by using above formula.
For example:
P = 1.2 atm
R = 0.0821 atm. L.mol⁻¹ .k⁻¹
T = 293 K
V = 2 L
n = ?
Solution:
PV = nRT
1.2 atm × 2L= n × 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K
n = 1.2 atm × 2L / 0.0821 atm. L.mol⁻¹ .k⁻¹ × 293 K
n = 0.1 mol
