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Firlakuza [10]
3 years ago
12

If a stone with an original velocity of 0 is falling from a ledge and takes 8 seconds to hit the ground what is the final veloci

ty of the stone
Chemistry
1 answer:
ziro4ka [17]3 years ago
5 0
Also 0 as it hits the ground and stops
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Select all the species that are ions.<br><br> HCl<br> NaCl<br> NH4+<br> H2PO4-<br> CCl4<br> H3O+
nata0808 [166]

Answer:

NH₄⁺

H₂PO₄⁻

H₃O⁺

Explanation:

  • An ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  • Ion may be positively charged "cation" or negatively charged "anion".
  • Neutral molecule has a net charge of zero.

<em>So, the species that are ions are: </em>

NH₄⁺

H₂PO₄⁻

H₃O⁺

4 0
4 years ago
Which one of the following items does NOT characterize a reducing agent? a. A reducing agent loses electrons. b. A reducing agen
Ad libitum [116K]

Answer: D

Explanation:

A reducing agent is a species that reduces other compounds, and is thereby oxidized. The whole compound becomes the reducing agent. In other words, of a compound is oxidized, then they are the reducing agent. On the other hand, if the compound is reduced, it is an ozidizing agent.

Since we have established that a reducing agent is the compound being oxidized, we know that A is not our answer. An oxidized compound is losing electrons. Choice A states exactly this.

For B, this is true as we have established this already.

C is also correct. Since a reducing agent loses electrons, it becomes more positive. This makes the oxidation number increase.

D would be our correct answer. It is actually a good oxidizing agent is a metal in a high oxidation state, such as Mn⁷⁺.

4 0
3 years ago
What is another name for the mormons?
Hatshy [7]
This isn't chemistry at all, but the Mormons are called the Church of Jesus Christ of Latter-Day Saints.
6 0
3 years ago
Read 2 more answers
Help please ASAP I’ll mark you as brainlister
noname [10]

Answer: FeO is called ferrous oxide while Fe2O3 is ferric oxide

Explanation:

Ferrous oxide, commonly known as iron(II) oxide contains iron that lost 2 elections in the oxidation process. So it is able to bond with other atoms that have an extra 2 electrons to share. Ferric oxide, is commonly known as iron(III) oxide

8 0
3 years ago
milk has a pH of 6.0 and household ammonia has a pH of 12.0. How much more acidic is milk than ammonia
iris [78.8K]

60 I think bcz if there is 1&2 they differ 10 times

3 0
3 years ago
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