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3 years ago

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What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common? their number of atoms their number of molecules their n

umber of electrons their number of protons

1 answer:

-Dominant- [34]3 years ago

3 0

It has the same number of atoms

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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

Si2C19<br> What is this compound

lutik1710 [3]

Answer:

BROMOTRIPHENYLSILANE

Explanation:

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3 years ago

The pH of a solution changes from 3.00 to 6.00. By what factor does the [H3O+] change?

Naya [18.7K]

: E) 1000 = 10^3
6-3 = 3 ==> change is 10^3
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3 years ago

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(110.3 g) + (45.27 g) + (54.43 g)

Darina [25.2K]

Answer:

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Explanation:

just add them all up

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3 years ago

What is a covalent bond

diamong [38]

Answer:

Covalent bonds involve the sharing of electron pairs between atoms. Electron pairs shared between atoms of equal or very similar electronegativity constitute a nonpolar covalent bond (e.g., H–H or C–H), while electrons shared between atoms of unequal electronegativity constitute a polar covalent bond (e.g., H–O).

Explanation:

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3 years ago