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mamaluj [8]
3 years ago
14

Plsss help!!! tyy!!!

Chemistry
1 answer:
velikii [3]3 years ago
4 0

Answer:

Conclude that darkness is necessary for lettuce seed germination

Explanation:

basicly the simple words the answer is: option B.

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A gas occupies 4.30 Liters at STP. What volume does it occupy at 2.56 atm and 302
laiz [17]

Answer:

V₂ = 1.86 L

Explanation:

Given data:

Initial volume = 4.30 L

Initial pressure = 1 atm

Initial temperature = 273.15 K

Final temperature = 302 K

Final volume =  ?

Final pressure = 2.56 atm

Solution:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

V₂ = P₁V₁T₂ /T₁ P₂

V₂ = 1 atm ×4.30 L × 302 K / 273.15 K × 2.56 atm

V₂ = 1298.6 atm.L.K / 699.26 K.atm

V₂ = 1.86 L

4 0
3 years ago
what is known as electronegativity and mention how the electro negativity vary long the periods and down the groups..please i ne
Kobotan [32]

Answer:

Electronegativity is a measure of an atom's ability to attract shared electrons to itself. On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group.

5 0
3 years ago
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How does hydrogen bonding affect the physical properties of substances?
alekssr [168]
The melting and boiling point depend on the strength of the ihydrogen bonds. Hydrogen bonding will cause the higher the melting and boiling points because more energy is needed to break bonds between molecules.
Hydrogen bonds affect solubility in water, molecules with hydrogen bonds dissolve better in water.
4 0
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Whatis the SI unit used by chemists to measure the amount of an element or substance
Harman [31]
The answer is Mole, but send me a message if you need the equation for how to get it
3 0
3 years ago
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Neutral atoms have the same number of protons as electrons. what would make the electrically charged magnesium ion, mg2+, neutra
Allushta [10]
Mg2+ is the positive ion of the neutral atom Mg. This means that the neutral atom Mg lost the two excess electrons in its outermost energy level and became a positive ion with the two excess positive charges. To become neutral again, the Mg2+ ion has to regain two electrons again to balance the negative charge with the excess two positive charges.
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3 years ago
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