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Rufina [12.5K]
3 years ago
12

Cuales eran los tres cultivos principales en México y America central ? A. El cacao , el maní , el aguacate B. El chile , la pap

a , el tomate , C . El maíz , el frijol , y la calabaza
Chemistry
1 answer:
zimovet [89]3 years ago
7 0

Answer:

C) El maiz, Frijol y calabaza

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The transfer of energy that occurs when a force is applied over a distance is
nika2105 [10]
The transfer of energy that occurs when a force is applied over a distance is WORK.

Hope this helps!
3 0
3 years ago
When 6.0 mol Al react with 13 mol HCl, what is the limiting reactant, and how many moles of H2 can be formed?
Ad libitum [116K]

You're looking for the number of moles of H2, and you have 6.0 mol Al and 13 mol HCL.

For the first part, you have to make your way from 6.0 mol of Al to mol of H2, right? For that to happen, you need to make a conversion factor that will cancel the mol Al, in such case use the 2 moles of Al from your equation to cancel them out. At the top of the equation, you can use the number of moles of H2 from the equation and find the moles that will be produced for the H2.

6.0mol Al x 3 mol H2/2 mol Al = 9 mol H2

For the second part, you have to make the same procedure, make a conversion factor that will cancel the mol of HCL and for that you need to use the 6 mol HCL from your equation, and at the numerator you can put the 3 mol of H2 from the equation so that you can find the number of moles of H2 that will be produced.

13 mol HCL x 3 mol H2/6 mol HCL = 6.5 mol H2

As it can be seen, HCL produces the less amount of H2 moles. Therefore, the reaction CANNOT produce more than 6.5 mol H2, in that case 6.5 mol will be the maximum number of moles that will be produced at the end because HCL does not have enough to produce more than 6.5 mol.

In that case HCL is the limiting reactant because it limits that will be produced, and so the answer is B!

6 0
3 years ago
If the temperature of a fixed amount of a gas is doubled at constant volume, what happens to the pressure?
EastWind [94]
Temperature and pressure are directly proportional. Pressure will also have to increase ( doubling).
4 0
3 years ago
What could J.J. Thomson conclude from his experiments?
KonstantinChe [14]

Answer:C, atoms must balance positive and negative particles.

Explanation: Got it correct on edgenuity.

6 0
3 years ago
Which hold more heat for longer period of time ? <br><br> A. Air <br> B. Water
Mandarinka [93]

Answer:

water

Explanation:

The heat capacity of a material, along with its total mass and its temperature, tell us how much thermal energy is stored in a material. ... <u>The result is that the temperature of the water cube is much more stable than the air — the water changes much more slowly; it holds onto its temperature longer.</u>

8 0
2 years ago
Read 2 more answers
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