Answer:
The force is <u>1</u><u>.</u><u>5</u><u>N</u>
Explanation:
Answer:
Explanation:
a ) false.
NH₃ is more polar molecule than PH₃ so inter-molucular attraction is greater in NH₃ ( hydrogen bond ) . Hence vapour pressure is low for NH₃ .
b ) false .
The average kinetic energy of boiling water molecules is lower on a mountaintop than it is at sea level. It is so because water boils at lower temperture on mountain and kinetic energy of molecules depends upon temperature .
c ) false
vapour pressure depends upon temperature .
d ) True
CCl4 is more volatile than CBr4
e ) false
vapour pressure increases as temperature increases.
Answer is (3) - Pb²⁺.
<em>Explanation;</em>
Among the given choices PbCl₂ is insoluble in water. But it can be soluble in hot water. It appears as white precipitate. The Ksp of PbCl₂ is very small. That's why it is insoluble in water.
Fe²⁺ + 2Cl⁻ → FeCl₂ (soluble in water. Forms pale green color solution)
Mg²⁺ + 2Cl⁻ → MgCl₂ (soluble in water. Forms clear colorless solution)
Pb²⁺ + 2Cl⁻ → PbCl₂ (poorly soluble in water. Forms white precipitation)
Zn²⁺ + 2Cl⁻ → ZnCl₂ (soluble in water. Forms clear colorless solution)
I think the correct answer is false. Protons are not the ones responsible for an element’s chemical behavior rather it is the electrons. This is because it is the electrons that are responsible for bonding. It is what dictates certain properties like boiling point and melting point
Answer:
Here's what I get
Explanation:
1. Addition of heat
The energy stored in the reactant is less than the energy stored in the products.
We had to add heat energy so the reactant would convert to products.
2. Balanced equation
CaCO₃ + heat ⟶ CaO + CO₂