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Arlecino [84]
3 years ago
11

If a water solution conducts electricity, what must the solute be

Chemistry
1 answer:
Ahat [919]3 years ago
6 0
Any solute that dissolves in water to give a solution that contains ions, and which therefore conducts electricity, is called an electrolyte. On the other hand, a solute that remains undissociated in solution is called a nonelectrolyte.
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Which of the following is an example of a physical change?
Mazyrski [523]

Answer:

B. honey dissolving in tea

Explanation:

5 0
3 years ago
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I need help with problems 11-13 please. I’m very confused on how to find Volume when there’s no specific shapes and numbers.
Rudik [331]

Answer:

To find volume you can either look at the displacement of the water or Length•Width•Height

Explanation:

11) 12

12) 340 mL

13) 196 m\

8 0
3 years ago
In the reversible reaction in water solution nh3 + h2o ⇀↽ nh+ 4 + oh− , what acts as a bronsted-lowry acid and what acts as a br
Masja [62]
The equation is:
NH₃     + H₂O     ↔    NH₄⁺          +       OH⁻
base       acid            conj. acid        conj. base

NH₃ is the proton acceptor so it considered as Bronsted-Lowry base and H₂O is proton donor so it considered as Bronsted-Lowry acid 

NH₃ when accepted H⁺ it converted into NH₄⁺ (conjugate acid) and H₂O when losing H⁺ it converted into OH⁻ (conjugate base)

The question asks for acid and base 
1) OH⁻ base, H₂O acid
2) H₂O acid, OH⁻ base
3) H₂O acid , NH₄⁺ acid
4) OH⁻ base, NH₄⁺ acid
5) NH₃ base, H₂O acid

so the correct answer is 2) because it is the only one containing acid then base
8 0
3 years ago
A useful application of oxalic acid is the removal of rust (fe2o3) from, say, bathtub rings according to the reaction below. fe2
Butoxors [25]

Answer: 170.9 g


Explanation:



1) Balanced chemical equation:


Fe₂O₃(s) + 6 H₂C₂O₄ (aq) → 2Fe(C₂O₄)₃³⁻ + 3H₂O + 6H⁺(aq)


2) mole ratio:


1mol Fe₂O₃ : 6 mol H₂C₂O₄


3) number of moles of H₂C₂O₄ in the solution


M = n / V ⇒ n = MV = 0.800M × 0.800 liter = 6.40 moles


4) Porportionality


1mol Fe₂O₃ / 6 mol H₂C₂O₄ = x / 6.40 mol H₂C₂O₄


⇒ x = 1.07 mol Fe₂O₃


5) Convert 1.07 mol Fe₂O₃ to grams.


molar mass Fe₂O₃ = 159.69 g/mol


mass in grams = molaer mass × number of moles


mass in grams = 159.69 g/mol × 1.07 mol = 170.9 g

3 0
3 years ago
A cell is constructed of the following two half cells.
Aleonysh [2.5K]
I believe the correct answer from the choices listed above is option A. The E+ of the cell would be 2.47 V. E of the cell is given by the formula E(cathode) - E(anode) . <span>So in this case the first half cell reaction is the reaction that takes place in the cathode and the second one takes place in the anode.</span>
5 0
3 years ago
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