Silver nitrate can be produced by dissolving metallic silver in concentrated nitric acid, with an addition product being hydrogen gas. write the chemical formula for this reaction.

2Ag(s) + 2HNO₃ (aq)  →  2AgNO₃(aq)  +  H₂(g)

Explanation:

Metallic silver = Ag (s)

Concentrated nitric acid = HNO₃ (aq)

Product being hydrogen gas = H₂(g)

2Ag(s) + 2HNO₃ (aq)  →  2AgNO₃(aq)  +  H₂(g)

Be careful AgNO₃ doesn't precipitate

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.