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stealth61 [152]
3 years ago
13

If we need 0.75 moles of ammonium hydroxide, how much is this in grams? The molar mass of ammonium hydroxide is 35.04g / (mol)

Chemistry
1 answer:
cestrela7 [59]3 years ago
5 0

Answer:

26.28

Explanation:

You multiply 35.04 by 0.75 which is equal to 26.28.

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Un átomo neutro tiene número atómico 1 y número másico 3. Indica cuántos protones, neutrones y electrones tiene.
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Answer:

El átomo podes 1 protón, 1 electrón y 2 neutrones.

Explanation:

Cada elemento químico se caracteriza por el número de protones de su núcleo, que se denomina número atómico Z. Es decir, el número atómico​ de un elemento químico es el número total de protones que tiene cada átomo de ese elemento.

Los protones poseen carga positiva y se encuentran en el núcleo, en torno al cual se mueven otras partículas con carga eléctrica negativa que son los electrones. Así, el átomo es eléctricamente neutro, ya que la carga positiva de los protones está compensada por la carga negativa de los electrones.  Entonces, en todo átomo neutro el número de protones del núcleo es igual al de electrones de sus orbitales.

En este caso, un átomo neutro tiene número atómico 1. Entonces la cantidad de protones y electrones presentes en el átomo es 1.

En el núcleo de cada elemento, además de protones, también es posible encontrar neutrones, cuyo número puede variar. La masa atómica (A) se obtiene sumando el número de protones y de neutrones de un núcleo determinado:

Número másico (A) = número de protones + número de neutrones

En este caso, el átomo neutro posee 1 protón y su número másico es 3. Entonces:

3= 1 + número de neutrones

Resolviendo:

3 - 1= número de neutrones

2= número de neutrones

Entonces,<u><em> el átomo podes 1 protón, 1 electrón y 2 neutrones.</em></u>

6 0
3 years ago
Need help please please
MatroZZZ [7]

Answer:

1) 4

2) 1/9

3) 46.5

4) 5.8

Explanation:

Density= Mass/Volume

1) D=24/6=4

2) D=1/9=0.11

3) D=2000/43=46.5

4) D=75/13=5.8

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Which of the following is the best definition of a scientific theory?Help me plz
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A scientific theory is a well tested explanation of a natural phenomenon.
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