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bulgar [2K]
3 years ago
12

What is potential or potenz hydrogen?​

Chemistry
1 answer:
Mrrafil [7]3 years ago
7 0

Answer:

potential or pontenz Hydrogen is the negative logarithm of molar hydrogen ion concentration.

Explanation:

potential Hydrogen or potenz Hydrogen stands for pH

potenz is in german

{ \tt{pH =  -  log [H {}^{ + } ]}}

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¿Cómo afectaría la velocidad de una reacción si se enfría lentamente la mezcla de los reactivos? AYUDA
hodyreva [135]

Answer:

La velocidad de reacción se ralentizará más rápidamente de lo habitual.

Explanation:

Dado que los factores que influyen en la velocidad de una reacción química son;

1) Temperatura de la mezcla reaccionante

2) Concentración (para líquidos) y área superficial de presión (para gases) (para sólidos) de los reactivos

3) catalizador

4) Reactantes naturaleza

5) Orientación de las moléculas reactivas reactivas

Tenemos que, específicamente, disminuir la temperatura del reactivo disminuye la probabilidad de que las moléculas de los reactivos involucrados en colisiones dentro de la mezcla tengan suficiente energía (que es igual o mayor que la energía de activación, Ea) para que la reacción se complete . Es decir, habrá una disminución en las colisiones efectivas (colisiones que provocan una reacción) y la reacción se ralentizará.

Dado que la velocidad de reacción se ralentiza con el tiempo, los reactivos de enfriamiento lento ralentizan rápidamente la reacción.

8 0
4 years ago
How many moles are in 9.571x10^2 mega grams of nickel (iii) sulfate?
Leni [432]

First convert mega grams to grams

(9.57x10^2)*(10^6)=957100000 grams

Then find the molar mass of nickel sulphate

Nickel Ni 3+ and sulphate SO4 2+

So formula= Ni2(SO4)3

So mr = (59*2) + (32*3) + (16*12)

= 406gmol-1

Moles = mass/mr

957100000/406

=2357389.163 moles


8 0
4 years ago
What is the mass in grams of 5.40 moles of lithium.
Maslowich
You would use the formula:

n = \frac{m}{M}

Where m is the mass, and M is molar mass (the periodic table would be used for this)

In this case, we need to rearrange the formula to find m

m = nM
    = 5.40 x 6.941
    = 37.5g

Hope this helped! Ask me if there's any part of the working you don't understand :)


3 0
4 years ago
Read 2 more answers
Please help it's Chemistry​
dsp73

Answer:nothing beats the chemistry between us :) smooth right?

Explanation:I’m pretty sure u have to show the part before the questions so that people can respond to it since there is no info on how to answer the question :p

7 0
3 years ago
Which set of atoms have 3 valence electrons?
ad-work [718]

Answer:

boron, aluminum, and gallium

Explanation:

They are in group 3A on the periodic table which means they have 3 valence electrons

6 0
3 years ago
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