3 years ago

How many σ and π bonds are in the molecule h c c n b b h h?

Chemistry

1 answer:

jarptica [38.1K]3 years ago

3 0

IT would be helpful to go to your teacher and ask or look up online how to do this promblem.

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A 0.75M solution of CH3OH is prepared in 0.500 kg of water. How many moles of CH3OH are needed?

4vir4ik [10]

Answer:

We need 0.375 mol of CH3OH to prepare the solution

Explanation:

For the problem they give us the following data:

Solution concentration 0,75 M

Mass of Solvent is 0,5Kg

knowing that the density of water is 1g / mL, we find the volume of water:

$d = \frac{g}{mL} \\\\ V= \frac{g}{d} = \frac{500g}{1 \frac{g}{mL} } = 500mL = 0,5 L$

Now, find moles of $CH_{3} OH$ are needed using the molarity equation:

$M = \frac{ moles }{ V (L)} \\\\\\molesCH_{3}OH = M . V(L) = 0,75 M . 0,5 L\\\\molesCH_{3}OH = 0,375 mol$

therefore the solution is prepared using 0.5 L of H2O and 0.375 moles of CH3OH, resulting in a concentration of 0,75M

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What pressure is required to compress 196.0 liters of air at 1.00 atmosphere into a cylinder whose volume is 26.0 liters?

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7.54 atm kf im correct

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What happens if carbon dioxide reacts with oxygen

lina2011 [118]

It forms Carbon monoxide.

CO2 +O2⇒ CO

(Sorry not balanced)

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A tube of air contains a feather and a coin. both objects are dropped at the same time. the coin falls faster than the feather.

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Because gravity treats all mass equally. It doesn't treat heavier objects with greater force. All objects experience the gravitational pull equally. Making the two different weights reach the ground together simultaneously despite their weight differences.

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3 years ago

if the temperature is constant what change in volume would cause the pressure of an enclosed gas to increase by a factor of 4

mezya [45]

P1V1=4P1V2
V2/V1= P1/4P1
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volume will decrease by factor 1/4

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3 years ago

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