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Mandarinka [93]
3 years ago
13

I need this all by today because I’m get 0 and my science teacher is being a

Chemistry
2 answers:
Shalnov [3]3 years ago
7 0
The cnidarias life cycle has 2 life cycles polyp and medusa
dmitriy555 [2]3 years ago
7 0

The correct answer is B their life cycle consists of two distinct phases - the polyp and medusa stage.

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What’s the difference between attractive forces and covalent bonds
Scrat [10]

Answer:

<em>An intramolecular force is between that atoms makeup a molecule. An intermolecular force is between entire molecules. A non-polar covalent bond occurs when the electrons are equally shared between atoms.</em>

3 0
2 years ago
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Explain why hydrogen can only have 2 valence electrons around it when it bonds to other items. What is the maximum number of bon
lys-0071 [83]

Answer:

In first shell only 2 electrons are present in hydrogen only one electron is present in valence shell. To complete its duplet hydrogen can share lose or gain only one electron to form chemical bond.

Hydrogen can form only one bond.

Explanation:

7 0
3 years ago
If the change in entropy of the surroundings for a process at 451 k and constant pressure is -326 j/k, what is the heat flow abs
Arisa [49]

If the change in entropy of the surroundings for a process at 451 k and constant pressure is -326 j/k, then heat flow absorbed (in kj) by the system is -147.026kJ.

<h3>What is entropy? </h3>

The entropy of particle is defined as how random it move. It shows the randomness of the system or may be disorders of the system. It is used to measure the unavailable energy for performing useful work.

Unit of entropy = J/K

<h3>Formula:</h3>

∆s = ∆Q/T

where,

∆s = change in entropy of the surrounding = -326J/K

∆Q = heat absorbed from surrounding

T = Temperature = 451K

∆Q = ∆s × T

∆Q = -326 × 451

∆Q = 147,026 J

∆Q = 147.026 kJ

Thus we find that the heat absorbed by the system is 147.026 kJ.

learn more about entropy:

brainly.com/question/14131507

#SPJ1

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2 years ago
A chemical reaction occurs when one or more change into one or more new substances called
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Changes into new substances called product.
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3 years ago
What ion does a base increase
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OH- is the ion that increases the concentration of a base
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