3 years ago

Y Ggg I Ip us Edd u I by

Chemistry

2 answers:

oksano4ka [1.4K]3 years ago

8 0

English please ?? .....

Dimas [21]3 years ago

3 0

Answer:

Explanation:

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1 How is the density of a substance calculated?

user100 [1]

Sorry for the scribbles lol

4 0

3 years ago

.7 liters of CO represents how many molecules?

Ronch [10]

Answer:

1.88 × 10²² Molecules of CO

Explanation:

At STP for an ideal gas,

Volume = Mole × 22.4 L/mol

Or,

Mole = Volume / 22.4 L/mol

Mole = 0.7 L / 22.4 L/mol

Mole = 0.03125 moles

Now,

No. of Molecules = Moles × 6.022 × 10²³ Molecules/mol

No. of Molecules = 0.03125 × 6.022 × 10²³ Molecules/mol

No. of Molecules = 1.88 × 10²² Molecules of CO

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2 years ago

Identify each of the following sets of quantum numbers as allowed or not allowed in the hydrogen atom.

Westkost [7]

Answer:

See explanation.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to firstly recall the electron configuration of hydrogen:

$1s^1$

To realize that the principal quantum number is 1, the angular is 0 as well as the magnetic one; therefore we infer that all the given n's are not allowed, just l=0 is allowed as well as ml=0 yet the rest, are not allowed.

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3 years ago

How is the use of word theory in science different from its more common use

weqwewe [10]

It is like an idea that they come up with in an experimeant

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4 years ago

to checkt the accuracy of a new method, a standard copper alloy containing 23.24%Cu was analyzed and calculated to contain 23.17

tekilochka [14]

Answer:

23.24%_23.17%

10%×1000

10/100×1000=

100

3 0

3 years ago