This is your answer I hope it is right.
There are 1,000 mm in a meter so times 1.2 by 1,000 and you get 1,200.
Now since he wants it in three equal pieces divide 1,200/3 and you get 400.
So your answer is: 400 mm
Kinetic. Transform to chemical energy in muscles
Answer:
84.11 g/mol
Explanation:
A metal from group 2A will form the cation M²⁺, and the ion carbonate is CO₃²⁻, so the metal carbonate must be: MCO₃, and the reaction:
MCO₃(s) → MO(s) + CO₂(g)
For the stoichiometry of the reaction, 1 mol of MCO₃(s) will produce 1 mol of CO₂. Using the ideal gas law, it's possible to calculate the number of moles of CO₂:
PV = nRT , where P is the pressure, V is the volume(0.285 L), R is the gas constant (62.36 mmHg*L/mol*K), n is the number of moles, and T is the temperature (25 + 273 = 298 K).
69.8*0.285 = n*62.36*298
18583.28n = 19.893
n = 0.00107 mol
So, the number of moles of the metal carbonate is 0.00107. The molar mass is the mass divided by the number of moles:
0.0900/0.00107 = 84.11 g/mol
The tide is where the sea level rises and falls
