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VashaNatasha [74]
3 years ago
6

Which organelle is marked with an X?

Chemistry
1 answer:
Natalija [7]3 years ago
4 0
The Lysosome is marked with an x
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The number of particles of 0.2<br> mole​
strojnjashka [21]

Answer:

There are 1.205x10²³ particles in 0.2 moles.

Explanation:

In order to <u>convert from moles to number of particles</u> we need to use <em>Avogadro's number</em>, which states the number of particles contained in 1 mol:

  • 0.2 mol * 6.023x10²³ particles /mol = 1.205x10²³ particles

Thus, there are 1.205x10²³ particles in 0.2 moles.

3 0
2 years ago
A helium laser emits light with a wavelength of 633nm. what is the frequency of light
wel

Answer:

 

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.

Explanation:

3 0
3 years ago
5. Rocks and sediment change their form as they move through the rock cycle. Which change
mina [271]

Answer:

Rock to Magma

Explanation:

Lava to Rock is incorrect because its "Freezing" The Lava

Magma to Lava basically a name change. No type change.

Rock to Sediment is Erosion of the rock.

Rock to Magma Is the Rock being super-heated, melting it. Similar to Ice and water but more extreme.

8 0
3 years ago
Based on the following reaction, determine how much heat is released if 500. grams of methane is combusted in excess oxygen: CH4
EastWind [94]

Answer:

- 13,150.6kJ

Explanation:

CH4 + 2 O2 ------> CO2 + 2 H2O ΔH= – 890 kJ

The ΔH is enthalpy change of combustion , which is the heat is either absorbed or released by the combustion of one mole of a substance.

ΔH=−890 kJ/mol (released in the combustion of one mole of methane)

using the molar mass  (in grams )of methane to get moles of sample

(237g × 1 mole of CH4)/16.04g=14.776 moles  of CH4

Since 1 mole produces 890 kJ of heat upon combustion, then 14.776 moles will produce

ΔH = 14.776moles of CH4 × 890kJ/1mole of CH4

=13,150.6kJ

Therefore ΔH = - 13,150.6kJ

3 0
3 years ago
Baseball traveling (+30 m/s) and is hit by a bat. it leaves the bat traveling (-40 m/s) what is the change in the velocity? reme
castortr0y [4]
The answer it 70 I think try it
3 0
3 years ago
Read 2 more answers
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