If your bike isn't the right size, your legs could be rubbing up against the seat of your bike. The friction can chafe the skin on your legs. If you were to crash your bike, skidding on the ground can cause anywhere from minor scrapes to serious friction burns.
Answer is: sulfate anion.
Balanced chemical reaction: Ca²⁺(aq) + SO₄²⁻(aq) → CaSO₄(s) .
Calcium sulfate (CaSO₄) has very low solubility in water (Ksp for calcium sulfate is 2.36·10⁻⁴).
Calcium cation (Ca²⁺) will form a precipitate with other anions also:
1) with oxalate anion (C₂O₄²⁻) will form CaC₂O₄(s), calcium oxalate.
2) with phosphate anion (PO₄³⁻) will form Ca₃(PO₄)₂(s), calcium phosphate.
3) with hydroxide anion (OH⁻) will form Ca(OH)₂(s), calcium hydroxide.
4) with carbonate (CO₃²⁻) will form CaCO₃(s), calcium carbonate.
Answer:
A)Chlorine and Bromine:
They are both non metal hence they form a covalent bond due to covalent bonding.
B)Potassium and Helium:
Helium ion has a small cationic radius and distorted by the potassium ion due to polarization.
C)Sodium and Lithium:
Both are metals hence they form a metallic bond since they share electrons to the electron cloud.
The force of an object due mass and gravity.it can also be defined as the force exerted by gravity on a body
