How can I calculate the valence electrons of ions?

Our science teacher gives you three liquids golden syrup, water and oil to pour into a jar. After pouring, the liquids layer as seen here. What property of matter prevents the three liquids from mixing together to form a solution?

The model below represents a nuclear reaction. Atom 1 is present before the reaction and Atom 2 and Atom 3 are produced after the reaction. Atom 1 = Atom 2 + Atom 3 + energy The model most likely represents a reaction which Select one: a.

A gas that has a volume of 28 liters, a temperature of 45 0 C, and an unknown pressure has its volume increased to 34 liters and its temperature decreased to 35 0 C. If I measure the pressure after the change to be 2.

4. which structure is found in all eukaryotic cells? a. large central vacuole b. golgi apparatus c. flagella d. cilia

Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O. Suppose 0.64 g of methane is mixed with 4.40 g of oxygen.

The volume of oxygen required for complete combustionof a mixture of 5 cm3 of ch4 and5 cm3 c2h4

What part of the digestive system removes most of the water from food? Question 4 options: Small intestine Stomach Large intestine Esophagus Save

In which type of chemical bonding are electrons shared among all atoms in the substance?

As pressure decreases, density: A. decreases B. increases C. remains the same

Use the unbalanced equation NH3+O2--> NO+H2O to find the mole ratio between NH3 ad O2