Answer: Linear, 180°
Explanation: According to VSEPR theory, the electron pairs surrounding an atom will position themselves around said atom in a way which minimizes the repulsion between them, in other words, as far apart from each other as they can.
In CO2, carbon is the central atom and it forms two double bonds with two different oxygen atoms. In this case, the only electron pairs surrounding the central atom are the ones forming each of the double bonds. VSEPR theory predicts that these two electron densities will repel each other as much as they can, and the molecular shape that will allow this to happen is a linear geometry with an approximate bond angle of 180°.
Answer:
Copper turns green on exposure to air
Explanation:
Liquid water freezes to form ice: Physical change
Reason: Water can melt back when it becomes ice.
Copper turns green on exposure to air: Chemical change
Reason: The copper can not change back from the green state when it turns green.
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.
Answer: The pressure of the gas is 0.34 atm
Explanation:
According to ideal gas equation:
P = pressure of gas = ?
V = Volume of gas = 605 ml = 0.605 L (1L=1000ml)
n = number of moles = 0.00803
R = gas constant =
T =temperature =
The pressure of the gas is 0.34 atm