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Alchen [17]
4 years ago
12

Some rice farmers burn their fields after harvest to remove leftover plant material and kill certain plant pests. You are resear

ching the health effects of smoke from the rice burning. You interview some of the farmers, and they tell you that the smoke is harmless. How certain can you be about this information? 1. Very certain, rice farmers know quite a bit about rice.
2. Not very certain, the rice farmers might not tell you the truth about rice burning because it affects their business.
3. Reasonably certain, rice is a food product, so it probably does not contain any toxic substances.
Chemistry
1 answer:
WARRIOR [948]4 years ago
5 0
I think its proably 3.....
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What conversion factor would you use to find the number of moles in 3.52x10^24 molecules
solmaris [256]

Answer:

Conversion factor is 6.022 ×10^23 molecules/mole.

Number of moles is 5.845 moles

Explanation:

We are given;

3.52 × 10^24 molecules

Required to determine the conversion factor\

We know that according to the Avogadro's constant;

1 mole of a compound contains 6.022 ×10^23 particles

Therefore, 1 mole of a molecular compound contains  6.022 ×10^23 molecules.

Thus, the conversion factor in this case would be 6.022 ×10^23 molecules/mole.

Such that; 3.52 × 10^24 molecules  are equivalent to;

= 3.52 × 10^24 molecules ÷ 6.022 ×10^23 molecules/mole.

=5.845 moles

Thus, the conversion factor is 6.022 ×10^23 molecules/mole.

Number of moles is 5.845 moles

5 0
4 years ago
How do I balance chemical equations ?<br>​
Maru [420]

Answer & explanation:

To balance a chemical equation, we must make sure that there are equal amounts of each element in the equation on either side.

To balance an equation step-by-step we first start by counting the amount of each element on each side. If they aren't equal, we must make them amounts equal on either side.

After you make sure all the elements are balanced, the net charge on both sides must also be equal.

8 0
4 years ago
For the following reactions, write a balanced equation using half-reactions and calculate the voltage to be expected.
Iteru [2.4K]

a) 2Na(s) +2H_2O(I)→ 2Na^+(aq) + OH^-(aq)+ H_2(g)

b) 2Ag (s) +2H^(aq) → 2 Ag^+ (aq) +H_2(g)

<h3>What are half-reactions?</h3>

The half-reaction method is a way to balance redox reactions. It involves breaking the overall equation down into an oxidation part and a reduction part.

a)

2Na(s) +2H_2O(I)→ 2Na^+(aq) + OH^-(aq)+ H_2(g)

E^0 cell = E^0 (reduction)  - E^0 (oxidation)

= E^0(\frac{H_2O}{H_2}, OH^-) -E^0(Na^+/Na)

= -0.83 - (-2.71) =1.88V

b)

2Ag (s) +2H^(aq) → 2 Ag^+ (aq) +H_2(g)

E^0cell= E^0(H^+/H_2) -E^0(Ag^+/Ag)

E^0cell=-0. - (0.8) =-0.8V

Learn more about the half-reactions here:

https://brainly.in/question/18053421

#SPJ1

8 0
2 years ago
(HELP) What were the main themes of the Arab poems?​
Mazyrski [523]

Answer:

chivalry and the romance of nomadic life. the life of Muhammad. a strict adherence to religious themes.

Explanation:

Sorry if its wrong

3 0
3 years ago
Plz help will mark as brainliest <br><br>CHOOSE THE CORRECT ANSWER ​
kodGreya [7K]

Answer:

1. Is red blood cells

2. Is high pressure

Explanation:

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8 0
3 years ago
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