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3 years ago

13

write the balanced equation for the reaction that occurs when butane undergoes combustionWhat is the coefficient of oxygen in th

e balanced equation?

1 answer:

love history [14]3 years ago

5 0

Answer:

2C4H10 + 13O2 ----> 4CO2 + 10H2O

The coefficient of oxygen in the balanced equation is 13

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Murrr4er [49]

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3 years ago

Carbon has an atomic number of 6. This means it has 6 protons and 6 electrons. How many valence electrons does carbon have?

Varvara68 [4.7K]

Answer:

4

Explanation:

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3 years ago

What is the electron configuration for magnesium (Mg)?

AveGali [126]

Magnesium has atomic no 12

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1s²2s²2p⁶3s²

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2 years ago

(C) A metal 'M' has electronic configuration 2, 8, 2. Find the formula of its

borishaifa [10]

M = 2 . 8 . 2

Valence Electron of M = 2

M ==> M⁺² + 2 e⁻

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b. M⁺² + PO₄⁻³ ==> M₃(PO₄)₂

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3 years ago

Given that kb for c6h5nh2 is 1.7 × 10-9 at 25 °c, what is the value of ka for c6h5nh3 at 25 °c?

lina2011 [118]

Answer: $k_a$ for $C_6H_5NH_3^+$ at 25°C is $0.588\times 10^{-4}$

Explanation: We are given $k_b$ of $C_6H_5NH_2$ at 25°C which is $1.7\times 10^{-9}$

To calculate the $k_a$ of $C_6H_5NH_3^+$ , we use the formula:

$k_w=k_a\times k_b$

$k_w\text{ at }25^o=1\times 10^{-14}$

Putting values in above equation, we get:

$1\times 10^{-14}=k_a\times (1.7\times 10^{-9})\\k_a=0.588\times 10^{-5}$

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3 years ago