The correct answer is - Jerusalem
Answer:
Organ systems & their main functions
Explanation:
The chest bones Rib Cage & spine - protects the vital organs (heart, lung,liver) from injury & provides structural support for body.
Skin is the body's first line of defense & keeps the body warm. In case of any invading infection, fever - body temperature rise fights it.
Circulatory system (containing heart) & its body fluid blood - transports nutrients and oxygen to body cells
Endocrine system regulates growth, produces hormones - that target organs via bloodstream.
Answer:
The atomic theory has changed over time as new technologies have become available. Scientific knowledge builds on past research and experimentation. 400 B.C. Democritus, a philosopher in ancient Greece, began the search for a description of matter.
Explanation:
Answer:
n₂ = 2.55 mol
Explanation:
Given data:
Initial number of moles = 0.758 mol
Initial volume = 80.6 L
Final volume = 270.9 L
Final number of moles = ?
Solution:
Formula:
V₁/n₁ = V₂/n₂
V₁ = Initial volume
n₁ = initial number of moles
V₂ = Final volume
n₂ = Final number of moles
now we will put the values in formula.
V₁/n₁ = V₂/n₂
80.6 L / 0.758 mol = 270.9 L/ n₂
n₂ = 270.9 L× 0.758 mol / 80.6 L
n₂ = 205.34 L.mol /80.6 L
n₂ = 2.55 mol
Hello!
There are two tests one could use to identify a solution of Ag₃PO₄ (keep in mind that this compound is very insoluble and very little amounts of it are in solution)
For Ag⁺ ion: Precipitate with NaCl. The adding of NaCl should produce a white precipitate.
Ag⁺(aq) + NaCl(s) → AgCl(s)↓ + Na⁺
For PO₄⁻³ ion: Precipitate with Ammonium Molybdate and Acid. This reaction should produce a yellow precipitate:
PO₄⁻³<span> + 3NH</span>₄⁺<span> + 12MoO</span>₄⁻²<span> + 24H</span>⁺<span> </span>→<span> (NH</span>₄)₃PO₄.12MoO₃(s)↓<span> + 12H</span>₂<span>O
</span>
Have a nice day!
