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Gnom [1K]
3 years ago
6

How is the way that stars produce energy connected to nuclear binding energy?

Chemistry
1 answer:
Nataly [62]3 years ago
6 0

Answer:

As estrelas produzem a sua energia por um mecanismo chamado fusão nuclear. Nesse processo dois elementos simples se fundem para produzir um elemento mais pesado, liberando muita energia. ... Neste caso ocorre exatamente o contrário da fusão: Átomos muito pesados (como o Urânio) são quebrados, liberando energia.

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What element provides strength to the exoskeleton of Clams and oysters
Julli [10]
Phosphorus!!!! Hope this helps
8 0
2 years ago
How many neutrons would an atom of fluorine have?
lord [1]

Answer:

9

Explanation:

6 0
3 years ago
Read 2 more answers
What amount of sucrose (C12H22O11) should be added to 5.83 mol water to lower the vapor pressure of water at 50 °C to 72.0 torr?
Triss [41]

Answer:

The amount of sucrose that must be added is 1.66 moles

Explanation:

Colligative property of lowering vapor pressure has this formula:

Vapor pressure of pure solvent (P°) - Vapor pressure of solution = P° . Xm

We have both vapor pressure (pure solvent and solution9, so let's determine the ΔP

ΔP = 92.6 Torr - 72 Torr = 20.6 Torr

Let's add the data in the formula

20.6 Torr = 92.6 Torr . Xm

Xm = Mole fraction of solute → (mol of solute/ mol of solute + mol of solvent)

Mol of solvent = 5.83 mol (data from the problem)

Therefore Xm = 20.6 Torr / 92.6 Torr → 0.222

Let's find out the moles of solute (our unknown value)

0.22 = moles of solute / moles of solute + 5.83 moles of solvent

0.222 (moles of solute + 5.83 moles of solvent) = moles of solute

0.222 moles of solute + 1.29 moles of solvent = moles of solute

1.29 moles of solvent = moles of solute - 0.222 moles of solute

1.29 moles = 0.778 moles of solute

1.29 / 0.778 = moles of solute → 1.66 moles

3 0
3 years ago
Three elements are represented by the letters A, B, and C. the three elements have the same number of valence electrons. Element
AfilCa [17]
Answer:
A- beryllium
B- calcium
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Explanation
NOTE: all element in group 2 have 2 balance electrons

First let’s start with B- number of electrons= number of protons which is equal to the atomic number. therefore, the answer is calcium as it’s atomic number is 20

C- magnesium will have three energy levels considering it has 12 electrons (2,8,2).

A- beryllium is the lightest one in group 2 as it has the atomic mass of 9.0122.
3 0
3 years ago
Gametes combine in sexual reproduction that creates a fertilized egg that will turn into a ____________.
enyata [817]

Answer:

i assume that it would be a gametophyte.

Explanation:

6 0
3 years ago
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