Answer:
Avogadro's number is a proportion that relates molar mass on an atomic scale to physical mass on a human scale. Avogadro's number is defined as the number of elementary particles (molecules, atoms, compounds, etc.) per mole of a substance. It is equal to 6.022×1023 mol-1 and is expressed as the symbol NA.
Explanation:
Answer:
Thallium absorbed 1069.645 J heat to reach to its melting point.
Explanation:
Specific heat capacity:
It is the amount of heat required to raise the temperature of one gram of substance by one degree.
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
Given data:
Mass of thallium = 32.9 g
specific heat capacity of thallium = 0.128 j/g. °C
Initial temperature = 49 °C
Final temperature = 303 °C
Solution:
Change in temperature = T₂- T₁
ΔT = 303 °C - 49 °C = 254 °C
Formula:
Q = m.c. ΔT
Q = 32.9 g ×0.128 j/g. °C × 254 °C
Q = 1069.645 J
Thallium absorbed 1069.645 J heat to reach to its melting point.
Answer:
Ba
Explanation:
The trend for atomic radius is that it increases as you go down and decreases as you go right.
Answer:
1/2 cup evaporated milk plus 1/2 cup water.
Explanation:
Its A because there has to be a roman numeral to indicate which net charge of iron was used