The answer is 3. As 5 * 3 = 15.
Is there any other equations I may be able to help you with? :)
Answer:
D. The particles move up and down without changing their position
Explanation:
These are gases. They are typically known for their randomness and no fixed arrangement of their atoms.
Gases generally assume the volumes of the containers they fill. They spread easily and readily to fill the volume where they occupy. Also, gases are readily compressible as they lack intermolecular attraction between their molecules.
Answer:
Explanation:
Given 2H₃PO₄ + 3Ca ⇒ 3H₂ + Ca₃(PO₄)₂
27.4g
=(27.4g/98g/mol)
= 0.280 mole H₃PO₄ used
Ca Used:
Rxn Ratio H₃PO₄ : Ca => 2:3
∴ moles Ca used = 3/2(0.280) mole Ca =0.420 mole Ca
grams Ca used = 0.420 mole Ca x 40 g/mole = 16.8 grams Ca used
Grams H₂ Produced:
Rxn Ratio H₃PO₄ : H₂ => 2:3 => moles H₂ produced = 3/2(0.28 mole H₂) = 0.420 mole H₂ = (0.420 mole H₂ x 2.02 g/mole) = 0.8484 grams H₂(g) Produced.
Moles Ca₃(PO₄)₂ Produced:
FWt Ca₃(PO₄)₂ = 310 g/mole
Rxn Ratio H₃PO₄ : Ca₃(PO₄)₂ => 2:1
∴moles Ca₃(PO₄)₂ Produced = 1/2(moles H₃PO₄ used)
= 1/2(0.28 mole) = 0.14 mole Ca₃(PO₄)₂
If you want grams Ca₃(PO₄)₂, multiply moles Ca₃(PO₄)₂ by formula weight.
Answer:
The answer is "it can tarnish"
Explanation: