part 1 sodium and rubidium have the same properties with potassium. this is because sodium, potassium, and rubidium are in the same column that is they are all in group one of periodic table. all are alkali metals hence have the same properties.
part two
magnesium have 12 neutrons, 12 protons and 12 electrons
from periodic table the magnesium is atomic number 12 and has a mass number of 24.305
The atomic number is equal to number of protons that is 12
protons value is the same as electron value hence the number of electron are also 12
mass number=protons +neutrons hence
Neutron=mass number-number of protons that is 24.035-12=12 which is equal to 12 neutrons
Answer:
1.78 mol
Explanation:
Step 1: Write the balanced equation
CaC₂ + H₂O ⇒ C₂H₂ + CaO
Step 2: Calculate the moles corresponding to 46.3 g of C₂H₂
The molar mass of C₂H₂ is 26.04 g/mol.
46.3 g × 1 mol/26.04 g = 1.78 mol
Step 3: Calculate the moles of H₂O required to form 1.78 moles of C₂H₂.
The molar ratio of H₂O to C₂H₂ is 1:1. The moles of H₂O required are 1/1 × 1.78 mol = 1.78 mol.
I believe it becomes kinetic energy, however I’m not entirely sure. I hope it helped though.
