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3 years ago

Suppose you needed to measure exactly 15.0 mL of water for an

Chemistry

2 answers:

Alex787 [66]3 years ago

7 0

Answer:

A test tube would be used.

Explanation:

The test tube is a laboratory instrument which is a cylinder made of graduated glass used to measure small volumes of liquids (from 5 mL to 2 L). For the measurement of the volume of the liquid, the most appropriate type of specimen must be selected, in this case a 15 mL one. The specimen is closed at the bottom and has a base for support.

s344n2d4d5 [400]3 years ago

6 0

Answer:

A 50-mL volumetric cylinder with 0.1-mL accuracy scale should be used for this purpose since three significant figures of accuracy are required.

Explanation:

Hello,

A 50-mL volumetric cylinder with 0.1-mL accuracy scale should be used for this purpose since three significant figures of accuracy are required.

Best regards.

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how many electrons does it take to fill the mos formed from the combination of the 3s orbitals of two atoms?

Musya8 [376]

The number of electrons it take to fill the mos formed from the combination of the 3s orbitals of two atoms simply is 14 electrons.

<h3>How electrons are distributed in the 3s orbitals.</h3>

The 3s orbital possess two different spherical nodes which is highly connected with the principal quantum number. In order words, it has 2 radial nodes. Also the shape of the 3s orbital is spherical in shape.

That being said, from the context of the above given task, the number of electrons which fill the mos formed from the combination of the 3s orbitals of two atoms is fourteen electrons.

However, the electron configuration of an atom simply is the arrangement of electrons in the electron shell or orbit of the atom of that element.

In conclusion, it can be deduced from above s orbital has a maximum of two electrons and this energy increases as the orbitals increases.

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brainly.com/question/860094

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1 year ago

Calculate each of the following quantities. (a) Mass (g) of solute in 175.4 mL of 0.267 M calcium acetate WebAssign will check y

ss7ja [257]

Answer:

a) 7.40 grams

b) 0.213 M

c) 102 moles

Explanation:

(a) Mass (g) of solute in 175.4 mL of 0.267 M calcium acetate

Step 1: Data given

Volume = 175.4 mL = 0.1754 L

Molarity = 0.267 M

Molar mass = 158.17 g/mol

Step 2: Calculate moles

Moles = molarity * volume

Moles = 0.267 M * 0.1754 L

Moles = 0.0468 moles

Step 3: Calculate mass

Mass = 0.0468 moles * 158.17 g/mol

<u>Mass = 7.40 grams</u>

b) Molarity of 597 mL solution containing 21.1 g of potassium iodide

Step 1: Data given

Volume = 597 mL = 0.597 L

Mass = 21.1 grams

Molar mass KI = 166.0 g/mol

Step 2: Calculate moles KI

Moles KI = 21.1 grams / 166.0 g/mol

Moles KI = 0.127 moles

Step 3: Calculate molarity

Molarity = moles / volume

Molarity = 0.127 moles / 0.597 L

Molarity = 0.213 M

Step 1: Data given

Volume = 145.6 L

Molarity = 0.703 M

Step 2: Calculate moles

moles = molarity * volume

Moles = 0.703 M * 145.6 L

Moles = 102 moles

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3 years ago

Fastss please i need for tomorrow

AveGali [126]

i would try to figure out how to get off of my bed without getting hurt, then look for food which since i'm microscopic i can eat living organisms .Then try to figure out how to get places without getting stepped on . i would be very careful because diseases are microscopic and once i tough them i would die .but i would try to get outside and see what it looks like without getten eaten by another microscopic thing.

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3 years ago

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dybincka [34]

Answer:

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Explanation:

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3 years ago

Why do atoms want to bond to other atoms?

lisov135 [29]

it's called an ionic bond, where one atom essentially donates an electron to another, forms when one atom becomes stable by losing its outer electrons and the other atoms become stable

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2 years ago