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Shtirlitz [24]
3 years ago
9

Get it correct?... ill give u brain-leISTTTTTT! :)

Chemistry
1 answer:
Neko [114]3 years ago
4 0

Answer: Spring a ring

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Pls help with this “can get 16 points!”
Bezzdna [24]

Explanation:

I believe mitosis is the answer

please mark me brainliest

8 0
3 years ago
What is term redox reaction
mash [69]
An oxidation-reduction (redox<span>) </span>reaction<span> is a type of chemical </span>reaction<span> that involves a transfer of electrons between two species. An oxidation-reduction </span>reaction<span> is any chemical </span>reaction<span> in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron.</span>
4 0
3 years ago
Read 2 more answers
Ammonia, NH3, is used as a refrigerant. At its boiling point of –33 oC, the standard enthalpy of vaporization of ammonia is 23.3
mario62 [17]

Answer:

-68.4 kJ

Explanation:

<u>The standard enthalpy of vaporization = 23.3 kJ/mol</u>

<u>which means the energy required to vaporize 1 mole of ammonia at its boiling point (-33 °C).</u>

To calculate heat released when 50.0 g of ammonia is condensed at -33 °C.

This is the opposite of enthalpy of vaporization which means that same magnitude of heat is released.

<u>Thus,  Q = -23.3 kJ/mol</u>

<u>Where negative sign signifies release of heat</u>

Given: mass of 50.0 g

Molar mass of ammonia = 17.034 g/mol

Moles of ammonia = 50.0 /17.034 moles = 2.9353 moles

Also,

1 mole of ammonia when condenses at -33 °C releases 23.3 kJ

2.9412 moles of ammonia when condenses at -33 °C releases 23.3×2.9353 kJ

<u>Thus, amount of heat released when 50 g of ammonia condensed at -33 °C= -68.4 kJ, where negative sign signifies release of heat.</u>

4 0
3 years ago
Why is the melting of ice a physical change? It changes the chemical composition of water. It does not change the chemical compo
snow_lady [41]
It does not change the chemical in the composition of water. hope it helps
3 0
3 years ago
Read 2 more answers
What does not add co2 to the atmosphere
marissa [1.9K]

Answer:

Abiotic objects

Ex. bed, table, lamp, chair, blanket, etc.

Abiotic means Non-living.

7 0
1 year ago
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