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Alika [10]
3 years ago
7

The center portion of the atom that contains the protons and neutrons is called the _____? nucleus

Chemistry
1 answer:
Virty [35]3 years ago
3 0
It's called the atomic mass
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Virtually no chemical reaction can occur in the body in the absence of enzymes. how might excessively high body temperature or a
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1. The structural unit of nucleic acids are composed of repeating units of monomers called nucleotides. Nucelotides are composed of three functional groups: sugars which are specifically pentoses (5-Carbon sugars), phosphate group and nitrogenous base.

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3.
a. Based on the nitrogenous bases and sugar, the DNA has a deoxyribose as the sugar and its 4 bases are adenine, guanine, cytosine and thymine. For RNA, the sugar is ribose while its 4 bases are <span>adenine, guanine, cytosine, and uracil

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8 0
3 years ago
How should students prepare to use chemicals in the lab?.
Serggg [28]

Answer:

Become familiar with the chemicals to be used, including exposure or spill hazards.

Locate the spill kits and understand how they are used.

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Hope this helped! :)

6 0
2 years ago
How many moles are in 3.01x10^23 particles?
Romashka-Z-Leto [24]

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.5 moles

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3 0
2 years ago
Samples of f2 gas and xe gas are mixed in a container of fixed volume. the initial partial pressure of the f2 gas is 8.0 atmosph
anzhelika [568]
Answer is: XeF₄.
p₁ (F₂) = 8,0 atm.
p₁ (Xe) = 1,7 atm.
p₂ (F₂) = 4,6 atm.
p₂ (Xe) = 0 atm, all reacted.
p - partial pressure.
pressure of F₂ reacted = Δp (F₂) = 8.0 - 4.6 = 3.4 atm.
pressure of Xe reacted = Δp(Xe) = 1,7 - 0 = 1,7 atm.
Δp (F₂)  / Δp(Xe) = 3,4 atm / 1,7 atm = 2:1.
Reaction: 2F₂ + Xe → XeF₄ (xenon-tetrafluoride)
8 0
3 years ago
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