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3 years ago

Which element is reduced in the following reaction: 2Mg+O₂ → 2MgO if Mg goes from 0 to +2 and O goes from 0 to -2?

Chemistry

1 answer:

Lyrx [107]3 years ago

8 0

Answer:

Explanation:

The element which is oxidized is the element that losses electrons and its oxidation state be more positive.

The element which is reduced is the element that gain electrons and its oxidation state be more negative.

<em> O goes from 0 to -2, so, it is the element that is reduced.</em>

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How are rotation and day related

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If rotation turns towards the sun then it is considered day. When the Earth rotates away from the sun, it is considered night.

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3 years ago

Read 2 more answers

5.4×10^3 × 1.2×10^7

Nadya [2.5K]

5.4*10^3 * 1.2*10^7.

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3 years ago

Hydrogen is manufactured on an industrial scale by this sequence of reactions:

hichkok12 [17]

Answer:

$K=K_1*K_2\\\\K=\frac{[H_2]^3[CO_2][H_2]}{[CH_4][H_2O][H_2O]}$

Explanation:

Hello there!

In this case, for the given chemical reaction, it turns out firstly necessary to write the equilibrium expression for both reactions 1 and 2:

$K_1=\frac{[CO][H_2]^3}{[CH_4][H_2O]} \\\\K_2=\frac{[CO_2][H_2]}{[CO][H_2O]}$

Now, when we combine them to get the overall expression, we infer these two are multiplied to get:

$K=K_1*K_2\\\\K=\frac{[CO][H_2]^3}{[CH_4][H_2O]} *\frac{[CO_2][H_2]}{[CO][H_2O]}\\\\K=\frac{[H_2]^3[CO_2][H_2]}{[CH_4][H_2O][H_2O]}$

Regards!

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3 years ago

Viết cấu hình electron nguyên tử các nguyên tố có số electron từ 1 đến 10

Dmitry [639]

Explanation:

Element Atomic number Electronic configuration Hydrogen 1 1 Helium 2 2 Lithium 3 2,1 Beryllium 4 2,2 Boron 5 2,3 Carbon 6 2,4 Nitrogen 7 2,5 Oxygen 8 2,6 Fluorine 9 2,7 Neon 10 2,8

The elements of these groups are called representative elements.

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3 years ago

Which of the following pairs of elements is most likely to form an ionic compound? (Hint - question 4 tells you what types of el

mamaluj [8]

$\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the Ionic bonds.

Since Sodium (Na) is a cation and Chlorine (Cl) is a Anion, they both form a Ionic bond called as NaCl (common salt)

So answer is, Na and Cl

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3 years ago