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Lelechka [254]
2 years ago
11

Reduction occurs at the cathode in

Chemistry
2 answers:
mina [271]2 years ago
8 0

Explanation:

option 2) voltaic cells only

<em><u>I </u></em><em><u>guess </u></em><em><u>so </u></em><em><u>this </u></em><em><u>is</u></em><em><u> </u></em><em><u>the </u></em><em><u>answer</u></em><em><u> </u></em><em><u>or </u></em><em><u>not </u></em>

Marta_Voda [28]2 years ago
5 0

Answer: 3

Explanation:

3) both electrolytic cells and voltaic cells

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Balance the Following Equations: SiCl4 + H2O = SiO2 + HCl
dimaraw [331]
The answer would be D.

SiCl4 + 2H2O → SiO2 + 4HCl (balanced equation)
5 0
2 years ago
Using the example in the above information determine the empirical formula of a compound if a sample contains 0.130 g of nitroge
olga2289 [7]

Answer: The empirical formula for the given compound is NO_2

Explanation : Given,

Mass of O = 0.370 g

Mass of N = 0.130 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Oxygen = \frac{\text{Given mass of oxygen}}{\text{Molar mass of oxygen}}=\frac{0.370g}{16g/mole}=0.0231moles

Moles of Nitrogen = \frac{\text{Given mass of nitrogen}}{\text{Molar mass of nitrogen}}=\frac{0.130g}{14g/mole}=0.00928moles

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.00928 moles.

For Oxygen  = \frac{0.0231}{0.00928}=2.4\approx 2

For Nitrogen = \frac{0.00928}{0.00928}=1

Step 3: Taking the mole ratio as their subscripts.

The ratio of O : N = 2 : 1

Hence, the empirical formula for the given compound is NO_2

4 0
3 years ago
PLS HELP I GIVE BRANLIEST !!!
yarga [219]

Explanation:

D. The total mass of the reactants equals the total mass of the

products.

6 0
2 years ago
In this equation, what should be the coefficients of the reactants and products?
Scrat [10]
<span>4 I</span>₂<span>+ 9 O</span>₂<span> = 2 I</span>₄<span>O</span>₉

Reactants :

I₂   ,   O₂

Products :

I₄O₉

hope this helps!

7 0
3 years ago
Why a common measuring system is important
Gekata [30.6K]
So scientist around the world can share there info without having to convert and doing extra work.
6 0
3 years ago
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