Answer:9.49g/mL
Explanation:
Mass of toy = 43.672g
Volume of water = 34.4mL
Volume of toy + volume of water = 39mL
Volume of toy = 39 — 34.4 = 4.6mL
Density = Mass /volume
Density = 43.672/4.6 = 9.49g/mL
Answer:
D.) decomposition
Explanation:
A.) is incorrect. In double-displacement reactions, the cation of one compound is swapped with the cation of another.
These reactions have the general structure: AB + CD -----> AD + BC.
B.) is incorrect. In single-displacement reactions, the an element within a compound is swapped with another element.
These reactions have the general structure: AB + C -----> AC + B.
C.) is incorrect. In synthesis reactions, two or more elements/compounds are combined to create a new and larger compound/molecule.
These reactions have the general structure: A + B -----> AB.
D.) is correct. In decomposition reactions, a compound/molecule is broken down into smaller elements/compounds. In the given reaction, water (H₂O) separates into its respective elements, hydrogen (H₂) and oxygen (O₂).
These reactions have the general structure: AB -----> A + B
I would say the answer is false
The simplest whole-number ratio of atoms in a molecule or formula unit is called the empirical formula. The empirical formula is clearly different from the structural formula and the molecular formula. Not all substances that have the same empirical formula have the same molecular formula too.
Can't help because APPARENTLY there is a picture that goes along with the questions. Post it and I can help.