its A) He reinterpreted and retested Joseph Proust’s results.
Permeability
Ductility
Not able to conduct heat
the theoretical yield of hydrogen gas is 10 g
calculation
Step 1: write the equation for reaction
Zn + 2 HCl → zncl₂ + H₂
Step 2: use the mole ratio to find the moles of H₂
from equation above Zn : H₂ is 1: 1 therefore the moles of H₂ = 5.00 moles
Step 3: find the theoretical yield(mass) for H₂
mass = moles × molar mass
from periodic table the molar mass of H₂= 1×2 = 2 g/mol
mass = 5 moles × 2 g/mol = 10 grams
Answer:
Explanation:
(1) 18 (3) 10
(2) 16 (4) 8
The total number of neutrons in an atom of O-18 is 10. This is determined by subtracting the atomic number (number of protons) from the atomic mass (number of protons + neutrons).
To find the number of neutrons in an atom, you subtract the atomic number (number of protons) from the atomic mass (number of protons + neutrons). In an atom of O-18 (Oxygen-18), the atomic number of oxygen is 8, which means there are 8 protons. The 18 in O-18 represents the atomic mass. Subtracting the atomic number (8) from the atomic mass (18) gives us the number of neutrons, which is 10.
#SPJ2
B) a polar covalent bond
C) an electronegative bond
D) a non-polar covalent bond
Answer:
A) an ionic bond
Explanation:
The mutual force of attraction between ions of opposite charges can best be described as an ionic bond.
In an ionic bond, an atom picks up electrons from the other so it becomes into a strongly electronegative atom while the other becomes into a strongly electropositive atoms and, as ions of different signs, it is generated an electrostatic attraction force between them.