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2 years ago

The question in the picture plz help and give me an explanation

Chemistry

1 answer:

zloy xaker [14]2 years ago

5 0

Answer:

Explanation:

I HOPE IT HELPS :)

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Credible sources always identify the author. Please select the best answer from the choices provided T F

Lostsunrise [7]

This is a true statement because the author can then be further looked into and researched

5 0

2 years ago

Read 2 more answers

Determine the number of atom in 5.0 moles in SI

Alex

Answer: 3.01 x 10^24 atoms

Explanation:

Based on Avogadro's law:

1 mole of any substance has 6.02 x 10^23 atoms

So, 1 mole of SI = 6.02 x 10^23 atoms

5.0 moles = Z atoms

To get the value of Z, cross multiply:

(Z atoms x 1 mole) = (6.02 x 10^23 atoms x 5.0 moles)

Z atoms•1 mole = 30.1 x 10^23 atoms•moles

Divide both sides by 1 mole

Z atoms•1 mole / 1 mole = 30.1 x 10^23 atoms•moles / 1 mole

Z = 30.1 x 10^23 atoms

[Place Z in standard form

So, Z = 3.01 x 10^24 atoms]

Thus, there are 3.01 x 10^24 atoms in 5.0 moles in SI

5 0

2 years ago

Why is water considered a pure substance?

vodomira [7]

Um i think its A or C

3 0

2 years ago

What is the Kelvin temperature of the air in a tire if the pressure inside the tire is 188 kPa at 32°C. While driving under peri

DENIUS [597]

Answer:

<u>414K</u>

Explanation:

The question is not completely clear because some missing parts or grammar (syntax) errors.

Interpreting it, the question is <em>what is the Kelvin temperatue of the air in a tire, when the pressure in the tire has increased to 225 kPa, if the initial conditions of the air inside the tire were 188kPa of pressure and a temperature of 32ºC.</em>

To solve this, you can assume constant volume and use the law of Gay-Lussac for ideal gases:

$\dfrac{P_1}{T_{1}}=\dfrac{P_2}{T_2}$

That equation works with absolute temperatures, i.e. Kelvin.

32ºC = 32 + 273.15 K = 305.15K

Then solve for T₂, substitute and compute:

$T_2=P_2\times \dfrac{T_1}{P_{1}}=225kPa\times \dfrac{305.15K}{188kPa}$

$T_2=413.90K\approx 414K\longleftarrow answer$

8 0

3 years ago

For a theoretical yield of 23 g and actual

solong [7]

Answer:

5. 56.5217

Explanation:

Calculate percent yield by (actual yield / theoretical yield) times 100

(13/23) x 100 = 56.52173913

6 0

2 years ago

The question in the picture plz help and give me an explanation​

The question in the picture plz help and give me an explanation