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Semenov [28]
3 years ago
15

Which type of microscope can be used to view cellular organelles such as the endoplasmic reticulum and Golgi?

Chemistry
1 answer:
Natalija [7]3 years ago
3 0
Transmission electron microscope.
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Be sure to answer all parts. Calculate ΔH o for the following reaction in two ways, using the data given below. H2(g) + I2(g) →
Fantom [35]

Answer:

a) ΔH°rxn = -9.2kJ/mol

b) ΔH°rxn = -9.2kJ/mol

Explanation:

Using Hess's law, you can find ΔH of a reaction from ΔH of formation of the substances involved in the reaction, thus:

ΔH°rxn = ∑(BE(reactants)) − ∑(BE(products))

Or:

ΔH°rxn = ∑(nΔH°f (products)) − ∑(mΔH°f (reactants))

For the reaction:

H₂(g) + I₂(g) → 2HI(g)

a) Using the first equation:

ΔH°rxn = ΔH (H-H) + ΔH (I-I) - 2ΔHBE (H-I)

ΔH°rxn = 436.4kJ + 151kJ - 2×298.3kJ

<em>ΔH°rxn = -9.2kJ/mol</em>

<em />

b) Using the second equation:

ΔH°rxn = 2Δ°f (HI) − ΔH°f (H₂) - ΔH°f (I₂)

ΔH°rxn = 2×25.9kJ - 0kJ - 61.0kJ

<em>ΔH°rxn = -9.2kJ/mol</em>

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3 years ago
Can someone help me with this? (WILL GIVE BRAINLIEST)
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the answer is in the picture, btw the molar mass for the first one is wrong, it should be 77.98, and the final product is 2.32

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<em>Hello there, and thank you for asking your question here on brainly.

The answer to this is Answer choice C: CaCl2

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Because it’s called heat changes it and melts the ice
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Atom , classify it<br><br><br><br><br>helppoppppoeowiie​
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Answer:

A atom is a small unit to which matter can be divided without releasing electrically charged particles

Explanation:

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