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2 years ago

I need help with this

Chemistry

2 answers:

cricket20 [7]2 years ago

7 0

Answer:

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Copy and paste to help Bob.

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Copy and paste to help Bob.

We can do it together!

Explanation:

Vedmedyk [2.9K]2 years ago

5 0

Answer:

i think its 63 pls do not get mad if not 63

Explanation:

from 60 you add three?(:

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0.000431 L<br><br> Express your answer as an integer.

Molodets [167]

A whole number, not a fraction, that can be negative, positive or zero are integers. They cannot have decimal places.

Now, converting 0.000431 L to decimal an integer as:

$0.000431 L = 431\times 10^{-6} L$

Since, $1 L = 10^{6} \mu L$

So, $431\times 10^{-6} L\times \frac{10^{6 \mu L}}{1 L} = 431 \mu L$ .

Hence, the integer value for 0.000431 L is $431 \mu L[$ .

3 0

3 years ago

For the following Bronsted acid-base reaction, complete the reaction, identify the acid, base, conjugate

madam [21]

Answer:

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7 0

3 years ago

Which of the following could happen when infrared radiation is absorbed by a molecule ?

Leto [7]

Answer:

E) Intramolecular bond angles change

Explanation:

Infrared Radiation:

IR is electromagnetic radiations. The wavelength i.e. 700nm to 1000 mm of infrared is longer than invisible light and Its frequency is lower than light, that's why it is invisible to light.

When IR radiation strike the molecule it absorbed by this molecule.

This radiation used to identify and study chemicals.

Infrared radiation interact with intra-bonds of the molecule.

Bonds in the molecules have vibrational translational and rotational movements
Due to these vibration, rotation and translation movement it absorb a radiation of specific frequency and wavelength
These movements of bond are very small and absorbs radiations of very low frequency
So when Infrared light or radiation absorbed the intra-bonds of the molecule get affected and angles of these bonds changes.
As the frequency of the absorbed radiation matches the frequency of the bond that vibrates.

The correct option is option E

E) Intramolecular bond angles change

* Note:

it couldn't be option A as the frequency of IR is not enough to rotate a whole molecule

It Couldn't be option B as IR rations are electromagnetic radiation of longer wave length so it one can not see it with light so how it will glow a molecule

It also not could be the option C as for the excitation of electrons require much higher energy.

It also not the option D as nuclear magnetic spin is associated with nuclear magnetic radiation that are much different from IR.

4 0

3 years ago

1.The movement of particles from a less crowded area to a more crowded area requires

Harrizon [31]

1. Energy as particles can't move without kinetic (movement) energy
2. I think it's Diffusion and Active Transport

7 0

3 years ago

Large-scale environmental catastrophes _______.

Ymorist [56]

Answer:

D. All of the Above

Explanation:

i just took the test on edgenuity

3 0

3 years ago