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ivanzaharov [21]
3 years ago
8

I need help QUICKLY!!!!!!!!

Chemistry
2 answers:
Rom4ik [11]3 years ago
7 0

Answer:

outside air

nose

lungs

bloodstream

cell

melisa1 [442]3 years ago
4 0

Answer: Do you take Ms. Reyes

Explanation: The answer is Outside air, Nose, Lungs, Bloodstream, Cell

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Which layer of the earth is the thinnest and thickest?
Xelga [282]

Answer:

crust

Discuss with the whole class what the relative thicknesses of the layers are — that the inner core and outer core together form the thickest layer of the Earth and that the crust is by far the thinnest layer.

Explanation:

Discuss with the whole class what the relative thicknesses of the layers are — that the inner core and outer core together form the thickest layer of the Earth and that the crust is by far the thinnest layer.

6 0
3 years ago
How many particles are in a 151 g sample of Li2O?
neonofarm [45]

Answer:

3.052 × 10^24 particles

Explanation:

To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)

The mass of Li2O given in this question is as follows: 151grams.

To convert this mass value to moles, we use;

moles = mass/molar mass

Molar mass of Li2O = 6.9(2) + 16

= 13.8 + 16

= 29.8g/mol

Mole = 151/29.8g

mole = 5.07moles

number of particles (nA) of Li2O = 5.07 × 6.02 × 10^23

= 30.52 × 10^23

= 3.052 × 10^24 particles.

4 0
3 years ago
How does energy flow through the food chain?
yuradex [85]

Answer:

2nd order.

Explanation:

gras, grasshopper, frog, snake, eagle

Pleas mark branliest if you are satisfied with the answer. Thanking you in anticipation.

3 0
3 years ago
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In supersonic flights, molecules break apart and react chemically. Which of
Lina20 [59]
A or D I think...sorry if it’s wrong
3 0
3 years ago
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What information about earthquakes do scientists gain from seismographs?
Anvisha [2.4K]

Answer:

how strong it is

Explanation:

Seismographs are not able to say when earthquake will happen, but they help humans to know how strong it is or if it is happening or not

8 0
3 years ago
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