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Andrews [41]
4 years ago
5

To protect itself from herbivores, plants ______

Chemistry
2 answers:
Lelu [443]4 years ago
4 0
C. both secrete toxins and have thorns
9966 [12]4 years ago
3 0
C.) both secrete toxins and have thorns (It simply depends on what kind of plant it is)
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When heated, iron (iii) hydroxide
NeX [460]
Fe(OH)3 --> Fe2O3 + H2O

2 Fe(OH)3 --> Fe2O3 + 3H2O

I hope this helps!
8 0
3 years ago
Read 2 more answers
What is another term for anode?
Rashid [163]

Answer:positive electrode

Explanation:

Anode can also be referred to as positive electrode in a cell

7 0
3 years ago
Which state of matter has a defined volume but no defined shape? 1 liquids 2 solids 3 gases 4 pizza​
stepan [7]

Answer:

the answer is liquids

8 0
4 years ago
Read 2 more answers
Phosphoric acid (h3po4) is tribasic, with pka's of 2.14, 6.86, and 12.4. The charge of the ionic form that predominates at ph 3.
Annette [7]

Correct answer is H_2PO_4^-.

Phosphoric acid is a polyprotic acid having 3 acidic hyrdogen therefore it will have 3 pka values.

The equations for the release of acidic hydrogen can be written as:

\\H_3PO_4\rightleftharpoons H_2PO_4^-+H^+\text{ pka=2.14}\\H_2PO_4^-\rightleftharpoons HPO_4^2^-+H^+\text{ pka=6.86}\\HPO_4^2^-\rightleftharpoons PO_4^3^-+H^+\text{ pka=12.4}

From the pka values we can judge the idea of pH as using Henderson-Hasselbalch Equation, we get the relation between pH and pka.

HA\rightarrow H^-+A^-

Using the following equation, relation of pH and pka is

pH=pka+log\frac{[A^-]}{HA}

Using this equation, we can find that the equation having pka= 2. 14 is closest to the pH=3.2 so the ionic form in this equation will be dominant at the same pH.

Therefore at pH=3.2 the ionic form H_2PO_4^- of H_3PO_4 is dominant.


7 0
3 years ago
Read 2 more answers
Why is the air in a jet aircraft flying at high altitudes pressurized? *
saw5 [17]

Answer:

Aircraft cabins are therefore pressurized to maintained a similar pressure as that experienced at sea level to ensure normal breathing of passengers.

Explanation:

-Air becomes increasingly thinner with increasing altitudes.

-As such, oxygen becomes limited at higher altitudes and makes it difficult or almost impossible to breath  a condition called hypoxia.

-Aircraft cabins are therefore pressurized to maintained a similar pressure as that experienced at sea level to ensure normal breathing of passengers.

6 0
4 years ago
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