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Free_Kalibri [48]
2 years ago
7

When a species cannot respond to environmental changes, members of that species begin to die. When the last member of a species

dies, the species becomes _________.

Chemistry
1 answer:
Zinaida [17]2 years ago
5 0

Extinct

When all of the members of species die out it is called extinct

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Please Answer ASAP!!
Roman55 [17]

Answer:

t

Explanation:

6 0
2 years ago
How to find the oxidation number of an element
Virty [35]
The thing you MUST do FIRST is look for any H's, O's, or F's in the equation

1)any element just by itself not in a compound, their oxidation number is 0
ex: H2's oxidation number is 0
ex: Ag: oxidation number is 0 if its just something like Ag + BLA = LALA

2) the oxidation number of H is always +1, unless its just by itself (see #1)
3) the oxidation number of O is always -2, unless its just by itself (see #1)
4) the oxidation number of F is always -1, unless its just by itself (see#1)


ok so after you have written those oxidation numbers in rules 1-4 over each H, F, or O atom in the compound, you can look at the elements that we havent talked about yet

for example::::
N2O4

the oxidation number of O is -2.

since there are 4 O's, the charge is -8. now remember that N2O4 has to be neutral so the N2 must have a charge of +8
+8 divided by 2 = +4

N has an oxidation number of +4.

more rules:
5) the sum of oxidation numbers in a compound add up to 0 (when multiplied by the subscripts!!!) (see above example)
6) the sum of oxidation numbers in a polyatomic ion is the charge (for example, PO4 has a charge of (-3) so

oxidation # of O = -2. (there are 4 O's = -8 charge on that side ) P must have an oxidation number of 5. (-8+5= -3), and -3 is the total charge of the polyatomic ion
3 0
3 years ago
The following balanced equation shows the formation of water.
ss7ja [257]
Mole ratio of H₂  :  O₂   is   2  :  1

∴ if mole of H₂  =  1.67 mol

then mole of O₂ =  \frac{1.67   mol}{2}

⇒ that mole of oxygen needed to react with H₂  =  0.835 mol

The answer is A
8 0
3 years ago
Read 2 more answers
Balance the following skeleton reaction and identify the oxidizing and reducing agents: Include the states of all reactants and
N76 [4]

Answer:

Oxidizing agent - CrO4^2-

Reducing agent- N2O

Explanation:

Let us look at the equation closely;

CrO4^2- (aq) + 3N2O(g) ------------> Cr^3+ (aq) + 3NO(g) [acidic]

The reduction half equation is;

CrO4^2- (aq) + 3e -------->Cr^3+ (aq)

Oxidation half equation is;

3N2O(g) ------>3 NO(g) +3 e

Note that the oxidizing agent participates in the reduction half equation while the reducing agent participates in the oxidation half equation as seen above.

8 0
2 years ago
True or False - Changing the temperature will not affect the pressure of the mixture?
irina [24]
The answer would most likely be true.
7 0
3 years ago
Read 2 more answers
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