I believe it is a Covalent Bond because 1st off, Calcium sulfide is made up of 2 elements, Calcium (Na) and Sulfer (S). Both elements want to obtain 8 electrons to become balanced (An octet) so therefore, these electrons are shared between these 2 elements.
Answer:
The difference between the density of the ocean crust and the continental crust is the fact that the ocean crust is denser than the continental crust. Meaning, the continental crust is likely to push over the oceanic crust considering it has less dense.
Explanation:
I hope this helps, the last time I learned this was in 5th grade and I am i currently in the 11th grade....
The answer is (4) exothermic with ΔH = -1640 kJ. The 1640 kJ energy is at the right side of equation means that it releases energy. The enthalpy change means the energy of production minus the energy of reactants. If it is exothermic, the ΔH < 0.
Answer:
The answer to your question is: Molarity = 0.83
Explanation:
Data
5% by mass
Molarity = ?
density = 1.05 g/ml
Molecular weight (CH₃COOH) = 24 + 32 + 4 = 60 g
Process
- Percent by mass means 5 g of vinegar in 100 ml of solution
- Calculate the moles of vinegar in the solution
60 g of vinegar ------------ 1 mol
5 g of vinegar ----------- x
x = (5 x 1) / 60
x = 0.0833 mol of vinegar
Formula
Molarity = moles of vinegar / volume (liters)
Substitution
Molarity = 0.0833 / 0.1
Molarity = 0.83