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timofeeve [1]
2 years ago
11

1g of a white solid is placed into a beaker of a green-colored liquid. The color of the liquid does not change, but a gas begins

to bubble up and spills over the rim of the beaker. Based on the information above, which of the following is true?
Select one:

A chemical change occurred due to the formation of a gas.

No chemical change occurred since an odor was not produced.

A chemical change occurred due to the combination of a solid and liquid.

No chemical change occurred since the color of the liquid did not change.
Chemistry
1 answer:
Alex Ar [27]2 years ago
6 0

Answer:

A chemical change occured due to the formation of a gas

Explanation:

Bubbles are an indicator of a chemical change because bubbles show that a gas is being released.

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Answer:

An octet is formed via ionic bonding when one or more valence electrons are transferred from one atom to another.

An octet is formed via covalent bonding when valence electrons are shared between atoms.

An octet is always formed via ionic bonding

Explanation:  The essence of bonding is stability. An octet or duplet state is formed when one or more valence electrons are shared. when the electrons are shared, the type of bond formed is a covalent bond. An octet is formed via ionic bonding when one or more valence electrons are transferred from one atom to another.

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2 years ago
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1. Which liquid sample is a pure substance?
IRISSAK [1]

The whole Activity , poem and paragraph is missing in the question.

Answer:

(1) Liquid A

(2) Solid A

Explanation:

Using this part of the given poem

Substances and mixtures behave differently,

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Substance melts completely but mixture does not

The boiling point of the Pure substance remain fixed after reaching its boiling point this is shown by Liquid A

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2 years ago
Determine the number of moles of KOH present in 95.0 ml of 0.255 M solution​
gizmo_the_mogwai [7]

Answer:

Moles of KOH in 1000 mL solution = 0.255 moles

Moles of KOH in 1 mL solution = 0.255/1000 = 0.000255 moles

Moles in 95 mL solution = (95 * 255)/1000000 = 24225/1000000

Moles of KOH in 95 mL 0.255M solution = 0.024225 moles

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Answer:

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Explanation:

If we have a small space with a defined volume like in this case an eye, when we fill this space with a liquid, the liquid will occupy the whole volume available, and when it is much liquid or fluid, and the volume of the eye can not expand it will start to generate an internal pressure. This higher pressure is called Hypertension.  

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4. Blue, Red, Green, Purple

(Lowest densities on the top, highest densities on the bottom)
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