Proton mass = 1.00728 amu
neutron mass = 1.0086 amu
electron mass = 0.000549 amu
so the mass is :
(7 * 1.00728) - (7 * 1.0086) - (7 * 0.000549) - 14.003074
= 0.11235 amu
Answer:
C, increases/decreases
Explanation:
As you move down a group on the periodic table, the electronegativity of an element decreases because the increased number of energy levels puts the outer electrons very far away from the pull of the nucleus.
Answer:
Their abundance decreases.
Explanation:
Google :)
The balanced equation for this reaction is
CaCO3 + H2SO4 ----> CaSO4 + CO2 + H2O
Answer:
24.6 atm
Explanation:
Step 1: Given and required data
- Pressure of carbon dioxide (P): ?
- Volume of carbon dioxide (V): 1.00 L
- Moles of carbon dioxide (n): 1.00 mol
- Ideal gas constant (R): 0.08206 atm.L/mol.K
- Temperature of carbon dioxide (T): 300 K
Step 2: Calculate the pressure of carbon dioxide
Assuming ideal gas behavior, we will use the ideal gas equation.
P × V = n × R × T
P = n × R × T/V
P = 1.00 mol × 0.08206 atm.L/mol.K × 300 K/1.00 L
P = 24.6 atm