Answer:
Watch the attached image, please.
Explanation:
To complete the Lewis structure for this covalent compound, you have to draw all the atoms with their valence electrons.
The drew has the nitrogen in the center and the fluoride and oxygen in the sides.
Each one of these atoms has to complete the octet rule, which is the ruler who says that all the atoms want to reach to have eight electrons to feel "stable".
For that reason, you have to arrange the atoms to comply with this rule.
Answer:
105 grams PbI₂
Explanation:
Pb(NO₃)₂ + 2KI => 2KNO₃ + PbI₂(s)
moles Pb(NO₃)₂ = 0.265L(1.2M) = 0.318 mole
moles KI = 0.293(1.55M) = 0.454 mole => Limiting Reactant
moles PbI₂ from mole KI in excess Pb(NO₃)₂ = 1/2(0.454 mole) = 0.227 mol PbI₂
grams PbI₂ = 0.227 mol PbI₂ x 461 g/mole = 104.68 g ≈ 105 g PbI₂(s)
The answer would be potassium nitrate.
Answer:
<u>A. Dalton's</u><u> </u><u>model</u>
Explanation:
Dalton's model was discarded as a result of Rutherford's model.
Answer:
d = 1.8 g/mL
Explanation:
Given data:
Mass of bottle = 6.8 g
Volume of liquid = 23.1 mL
Mass of bottle + liquid = 48.8 g
Density of liquid = ?
Solution:
First of all we will calculate the mass of liquid.
Mass of liquid = combined mass - mass of bottle
Mass of liquid = 48.8 g - 6.8 g
Mass of liquid = 42 g
Density of liquid:
d = m/v
d = 42 g/ 23.1 mL
d = 1.8 g/mL
