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Elan Coil [88]
3 years ago
10

Which are long chains formed by the process of polymerization? subunits ethylenes monomers DNA strands

Chemistry
2 answers:
Inga [223]3 years ago
8 0

Monomers and polymers

Most large biological molecules are polymers, long chains made up of repeating molecular subunits, or building blocks, called monomers.

zhuklara [117]3 years ago
5 0

Answer:

<em>C</em>

Explanation:

simple answer

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Predictable moderate winds between 5 &amp; 25 degrees North or South latitude are called?
Grace [21]

Answer:

احبـــــــــــــــــــك

لول ملل اقولج انا اسفه

6 0
3 years ago
How many grams of sulfuric acid are needed to produce 57.0 grams of water? Show all steps of your calculation as well as the fin
antiseptic1488 [7]

Answer:

155.16 g.

Explanation:

  • Firstly, It is considered as a stichiometry problem.
  • From the balanced equation: 2NaOH + H₂SO₄ → 2Na₂SO₄ + 2H₂O
  • It is clear that the stichiometry shows that 2.0 moles of NaOH reacts with 1.0 mole of H₂SO₄ to give 2.0 moles of Na₂SO₄ and 2.0 moles of H₂O.
  • We must convert the grams of water (57.0 g) to moles <em>(n = mass/molar mass)</em>.
  • n = (57.0 g) / (18.0 g/mole) = 3.1666 moles.
  • Now, we can get the number of moles of H₂SO₄ that is needed to produce 3.1666 moles of water.
  • <em>Using cross multiplication:</em>
  • 1.0 mole of H₂SO₄ → 2.0 moles of H₂O, <em>from the stichiometry of the balanced equation</em>.
  • ??? moles of H₂SO₄ → 3.1666 moles of H₂O.
  • The number of moles of H₂SO₄ that will produce 3.1666 moles of H₂O <em>(57.0 g)</em> is (1.0 x 3.1666 / 2.0) = 1.5833 moles.
  • Finally, we should convert the number of moles of H₂SO₄ into grams <em>(n = mass/molar mass)</em>.
  • Molar mass of H₂SO₄ = 98.0 g/mole.
  • mass = n x molar mass = (1.5833 x 98.0) = 155.16 g.
6 0
3 years ago
Read 2 more answers
Hat is the definition for a scientific theory? A. an informed explanation that can be tested but is not widely accepted B. an ex
frosja888 [35]

Answer:

D. a scientific explanation that is agreed on by all scientists and is no longer adjusted as new evidence is found

Explanation:

Scientific theory is an explanation that has been repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results

3 0
3 years ago
Read 2 more answers
What is the electron configuration of the element in period 2 that has 5 valence electrons (valence electrons are the electrons
balu736 [363]

Answer:

Nitrogen

Explanation:

N= is the symbol

electronic configuration

1s2 2s2 2p3

8 0
3 years ago
If element x forms the oxides xo and x2o3 the oxidation numbers of element x are
Deffense [45]

Answer:

b) +2 and +3.

Explanation:

Hello,

In this case, given the molecular formulas:

XO

And:

X_2O_3

We can relate the subscripts with the oxidation states by knowing that they are crossed when the compound is formed, for that reason, we notice that oxygen oxidation state should be -2 for both cases and the oxidation state of X in the first formula must be +2 since both X and O has one as their subscript as they were simplified:

X^{+2}O^{-2}

Moreover, for the second case the oxidation state of X should be +3 in order to obtain 3 as the subscript of oxygen:

X_2^{+3}O_3^{-2}

Thus, answer is b)+2 and +3

Best regards.

3 0
3 years ago
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