3 years ago

PLEASE! 46 POINTS!

Chemistry

1 answer:

nexus9112 [7]3 years ago

8 0

Answer:

1. compounds

2. Covalent Compound

3. Not sure

4. ions

5. C

6. false

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21) Amines, amides, and amino acids are categories of *

tia_tia [17]

Answer:

Organic compounds

Explanation:

I just did this question and apparently it’s that. (:

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3 years ago

What is the gram-formula mass of Fe(NO3)3?

dusya [7]

M Fe = 55,85g ≈ 56g
m O = 16g
m N = 14g
m Fe(NO3)3 = 56g + 3*14g + 3*3*16g = 242g/mol

answer: (4)

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3 years ago

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A sample of pure NH4HS is placed in a sealed 2.0-L container and heated to 550 K at which the equilibrium constant is 3.5 x 10-3

Zolol [24]

Answer:

The mass of $NH_{3}$ in the container is 2.074 gram

Explanation:

Given:

Volume of $NH_{4} HS$ $V = 2$ lit

Equilibrium constant $k _{eq} = 3.5 \times 10^{-3}$

The reaction in which $NH_{3}$ is produced

$NH_{4} HS$ ⇄ $NH_{3} + H_{2}S$

Here equal moles of $NH_{3}$ and $H_{2}S$ is formed.

From the formula of equilibrium constant,

$k_{eq} = (NH_{3})(H_{2}S )$

$x^{2} = 3.5 \times 10^{-3}$

$x = 0.061$ M

Above value shows,

$NH_{3} = 0.061$ $\frac{moles}{L}$

So in 2 L no. moles of $NH_{3}$ = $0.061 \times 2 = 0.122$ moles.

So mass of 0.122 mole of $NH_{3}$ is = $0.122 \times 17 = 2.074$ g

Therefore, the mass of $NH_{3}$ in the container is 2.074 gram

8 0

3 years ago

Help me Plz, I am really confused

avanturin [10]

O is a blood donor
AB receiver

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3 years ago

The _____ is one of the way paces where North America and Pacific Plates meet.

Morgarella [4.7K]

Answer:

The ring of fire

Explanation:

The ring of fire is where they meet or at the fault lines

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3 years ago

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