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hjlf
2 years ago
8

What is an example of land features formed from constructive forces?

Chemistry
1 answer:
elena-14-01-66 [18.8K]2 years ago
7 0

It’s C.valley formed from water erosion

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Compare and contrast conduction, convection, and<br> radiation as part of heat energy
Zinaida [17]

Answer:

In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.

5 0
2 years ago
Element X has a charge of +2 and Element Y has a charge of -1.
bekas [8.4K]

the chemical equation will be XY2

6 0
2 years ago
Cuando el oxígeno reacciona con el calcio produce un sólido blanco muy utilizado en la preparación de cementos. ¿Cuál de las sig
8_murik_8 [283]

Answer:

2Ca + O₂ → 2CaO

Explanation:

Cuando el Calcio (Ca) reacciona con oxígeno (O₂) se produce cal (CaO). La cal es un sólido inodoro de color blanco a grisáceo. La cal es un óxido que se encuentra presente en el cemento y su cuantificación permite determinar la calidad y el tipo de cemento a utilizar.

La reacción que describe el proceso anterior es:

Ca + O₂ → CaO

Para balancear los oxígenos, se deben poner 2 CaO como producto:

Ca + O₂ → 2CaO

Para balancear los calcios, se pone como coeficiente del Ca un 2:

<h3>2Ca + O₂ → 2CaO</h3><h3 />

Esta última es la reacción que describe el proceso anterior

6 0
3 years ago
Which of the following molecules is polar? CH4, Ch3OH, CO2
uranmaximum [27]
Hello! Ch3OH will be your polar molecule here. Hope it helped.
5 0
3 years ago
What is the ph of a solution that is .75 m in sodium acetate and .50 m in acetic acid? (ka for acetic acid is 1.8*10^-5?
inna [77]

Answer:

4.921.

Explanation:

  • It is an acidic buffer solution;

∵ pH = pKa + log[salt]/[acid].

<em>∴ pH </em>= - log(1,8 x 10⁻⁵) + log[0.75/0.50] = 4.745 + 0.1761 = <em>4.921.</em>

8 0
3 years ago
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