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4 years ago

Which drawing below best represents hydrogen bonding methanol, ch3oh?

Chemistry

1 answer:

madam [21]4 years ago

4 0

Hydrogen Bond Interactions are formed between Hydrogen atom attached to more electronegative atom (F, O or N) of one molecule and highly electronegative atom (F, O or N) of another molecule. In case of methanol, hydrogen is bonded directly to oxygen atom and gets partial positive charge, this hydrogen atom interacts with Oxygen (Highly electronegative) atom of second molecule. Hydrogen bonding are stronger due to which methanol has greater b.p (64.7 ⁰C) as compared to methane (-161.5 ⁰C).

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4 years ago

There are 0.55 moles of carbon dioxide gas in a 15.0 L container. This container is at a temperature of 300 K. What is the press

sertanlavr [38]

Answer:

$\large \boxed{\text{D.) 91 kPa}}$

Explanation:

We can use the Ideal Gas Law — pV = nRT

Data:

V = 15.0 L

n = 0.55 mol

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Calculation:

$\begin{array}{rcl}pV & =& nRT\\p \times \text{15.0 L} & = & \text{0.55 mol} \times \text{8.31 kPa$\cdot$ L$\cdot$K$^{-1}$mol$^{-1}\times$ 300 K}\\15.0p & = & \text{1370 kPa}\\p & = & \textbf{91 kPa}\end{array}\\\text{The pressure in the container is $\large \boxed{\textbf{91 kPa}}$}$

6 0

3 years ago

Determine the mass of water produced from 50g hydrochloric acid and

Alenkinab [10]

Answer:

24.7 grams H₂O

Explanation:

To find the mass of water, you should (1) convert from grams HCl to moles (via molar mass from periodic table), then (2) convert from moles HCl to moles H₂O (via mole-to-mole ratio from equation), and then (3) convert from moles H₂O to grams (via molar mass from periodic table).

1 HCl + KOH --> 1 H₂O + KCl

Molar Mass (HCl): 1.008 g/mol + 35.45 g/mol
Molar Mass (HCl): 36.458 g/mol

Molar Mass (H₂O): 2(1.008 g/mol) + 16.00 g/mol
Molar Mass (H₂O): 18.016 g/mol

50 g HCl 1 mole HCl 1 mole H₂O 18.016 g
-------------- x ------------------ x ------------------- x ------------------- = 24.7 g H₂O
36.458 g 1 mole HCl 1 mole H₂O

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2 years ago

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Nina [5.8K]

I think that the answer is (D)... I hope this helped

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4 years ago

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hram777 [196]

Answer:

Explanation:

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3 years ago