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liraira [26]
3 years ago
11

Sometimes engineers increase output through crossbreeding. This is when they:

Chemistry
1 answer:
kondaur [170]3 years ago
5 0
Combine two plants so that each plant's strength compensates for the other's weakness apek
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Which is false HCI + CaCO3
tekilochka [14]

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CaCO3 is false

Explanation:

Because HCl is hydrongen chloride

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The amount of heat energy needed to heat 200 g of water from 15 °C to its boiling point, and boil it, is
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Metals can be highly purified using electrolysis. Which equation best reflects the overall process of purifying copper?
makvit [3.9K]

Answer:

A. Cu^+2(aq)cathode ---> Cu^+2(aq)anode

Explanation:

Electrolysis is the process in which current is passed through a solution thereby causing a chemical change at the anode and cathode. Copper is being purified using electrolysis by using impure copper at the anode and pure copper at the cathode. This pure and impure copper are placed in a copper(ii)sulfate electrolyte solution and dc current is made to pass through it.  The resulting changes at the anode and cathode are given by the equation:

cathode: Cu²⁺  + 2e⁻    ⇒     Cu

anode:    Cu     ⇒       Cu²⁺  + 2e⁻

3 0
3 years ago
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Slav-nsk [51]

Strongest reducing agents are in Group 1 . For example lithium. The strongest oxidising agents are in Group 7 , For example Fluorine.

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The answer to this question is A. 100
 

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