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marin [14]
3 years ago
7

What animal is most like to harmed when a beaver builds a dam​

Chemistry
2 answers:
guajiro [1.7K]3 years ago
7 0
Fish or other animals that need to use the river for food
siniylev [52]3 years ago
3 0

Answer:

Small fish or insects.

Explanation:

You might be interested in
Which of the following is true for a nuclear reaction? Electrons are lost Electrons are gained Identity of element changes Ident
anyanavicka [17]

All nuclear chemistry revolves around changing the identity of base elements.

The answer is the third statement.

Because nuclear chemistry is changing base elements' identities, the atomic number/number of protons is what is changing.  While the number of electrons can change, your question is too general to know whether electrons are going to be gained, lost, or retained in the reaction.

5 0
3 years ago
Read 2 more answers
Question 1 (True/False Worth 2 points)
pochemuha

1) Answer is: False.

Balanced chemical reaction: Pb + AlCl₃ → no reaction.

The reactivity series is a series of metals from highest to lowest reactivity. Metal higher in the reactivity series will displace another.

Aluminium (Al) is higher in activity series than lead (Pb).

That means aluminium (Al) is stronger reducing agent than lead and gives electrons easier.

This series are used to summarize information about the reactions of metals with acids or water, double displacement reactions (more reactive metals displace metals with lower reactivity) and the extraction of metals from their ores.

2) Answer is: Na3PO4 + 3KOH → 3NaOH + K3PO4, because K retains the same charge throughout the reaction.

This chemical reaction is double displacement reaction - cations (K⁺ and Na⁺) and anions (PO₄³⁻⁻ and OH⁻) of the two reactants switch places and form two new compounds.

Na₃PO₄ is sodium phosphate.

KOH is potassium hydroxide.

NaOH is sodium hydroxide.

K₃PO₄ is potassium phosphate.

3) Answer is: Zn + H2SO4 → ZnSO4 + H2.

Single replacement is reaction where neutral element metal or nonmetal become an ion as it replaces another ion in a compound.

In this balanced chemical reaction zinc (Zn) replaces hydrogen (H).

Zinc changes oxidation number from 0 to +2 (this is oxidation) and hydrogen change oxidation number from +1 to 0 (reduction).

4) Answer is: A single replacement reaction takes place because sodium is more reactive than hydrogen.

Balanced chemical reaction:

2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g).

Single replacement is reaction where neutral element metal or nonmetal become an ion as it replaces another ion in a compound.

In this balanced chemical reaction sodium (Na) replaces hydrogen (H).

Sodium changes oxidation number from 0 to +1 (oxidation) and hydrogen change oxidation number from +1 to 0 (reduction).

5) Answer is: True.

For example, balanced chemical reaction:

Ca + 2HCl → H₂ + CaCl₂.

Reduction hald reaction: 2H⁺ + 2e⁻→ H₂.

Oxidation half reaction: Ca⁰ → Ca²⁺ + 2e⁻.

In this balanced chemical reaction calcium (Ca) replaces hydrogen (H).

In this chemical reaction, calcium lost two electrons (oxidation, change oxidation number from 0 to +2) and hydrogen gain that two electrons (reduction, change oxidation number from +1 to 0).

6) Answer is: It is a single replacement reaction, and the cations in the two ionic compounds are different.

For example, balanced chemical reaction:  

Ba + MgSO₄ → BaSO₄(s) + Mg.

In this balanced chemical reaction barium (Ba) replaces magnesium (Mg), because barium is higher at activity series.

Sulfate anion (SO₄²⁻) is the same in two ionic compounds, but cations (Mg²⁺ and Ba²⁺) changes.

Single Displacement is reaction where neutral element metal or nonmetal become an ion as it replaces another ion in a compound.  

6 0
3 years ago
Which options correctly describe characteristics of noble gases? Select all that apply.
ANTONII [103]

This is the only option that correctly describe characterisitics of noble gases.  

All noble gases have a unique atomic fingerprint.


All noble gases have valence shells with 8 electrons but Heilum has only 2 valence electrons.

And all noble gases do not easily react with other elements as they have their outermost shell completly filled so they are highly stable.

All noble gases emits different colored light when electrified.

6 0
3 years ago
24 POINTS!!!!!!!
solong [7]

C. An ionic bond is a bond between charged atoms while a covalent bond is a bond between opposite charges


5 0
3 years ago
Read 2 more answers
Pls help!! will give brainly
____ [38]

Answer:

True

Explanation:

4 0
3 years ago
Read 2 more answers
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