Answer:
The answer is "Each student will get a glass of water and drop the bead into it but the beads float 0.6 g / cm3 and slip down to 1.2 g / cm3
".
Explanation:
One's masses would've been dissimilar, even though their width and concentrations were also equal. Whenever the type-A mass is m, then the type-B mass is 2 m. One should measure then, therefore.
Water has a 1g / cm^3 density. Although Type A is higher than air, Type B is much more compact. it means will float if they place it in water type-A where type-B sinks.
I think it is D, halogens have a full outer shell of valence electrons :)) hope I helped
The heat of vaporization is the heat that a substance needs to pass from liquid state to gas state.
As the intermolecular forces of liquid are low the heat required to separate the molecules and reach the gas state is also low.
It is the low intermolecular forces of chloroform which causes it has a low vaporization heat.
Chloroform molecule is CHCl3, i.e an atom of C surrounded by 1 atom of H and 3 atoms of Cl.
It is the simmetry of the molecule of chloroform which conferes it its low heat of vaporization, because this symmetry causes that most of the dipoles cancel each other.
Answer:
The cation is written first in the name; the anion is written second in the name.
Rule 2. When the formula unit contains two or more of the same polyatomic ion, that ion is written in parentheses with the subscript written outside the parentheses.
Rule 3. If the cation is a metal ion with a fixed charge, the name of the cation is the same as the (neutral) element from which it is derived (e.g., Na+ = "sodium"). If the cation is a metal ion with a variable charge, the charge on the cation is indicated using a Roman numeral, in parentheses, immediately following the name of the cation (e.g., Fe3+ = "iron(III)").
Rule 4. If the anion is a monatomic ion, the anion is named by adding the suffix -ide to the root of the element name (e.g., I- = "iodide").
Note: Greek prefixes are not used to indicate the number of atoms, or polyatomic ions, in the formula unit for the compound (e.g., Ca(NO3)2 is named "calcium nitrate" not "calciuim dinitrate").
Explanation: