When are ionic bonds formed?
Answers
Na⁺ and Cl⁻
hope this helps!
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Which of the following molecules has polar bonds but is a nonpolar molecule?a. H₂ b. H₂O c. NH₃ d. NaCl e. CO₂ Can anyone explain this one?
A student views four models showing magnified views of the phases of matter.What question will best help the student determine which model is plasma?AWhich model is composed of rapidly moving particles?B.Which model is composed of particles vibrating in place?CWhich model is composed of electrically charged particles?Which model is composed of particles sliding past each other?
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I think it is B. Gamma, cause it made the Hulk. That is not my only reason though.
Answers
Answer:
0.109 g.
Explanation:
Equation of the reaction:
Na3PO4 + 3HCl --> 3NaCl + H3PO4
Number of moles of HCl = molar concentration × volume
= 0.1 × 0.04
= 0.004 mol.
By stoichiometry, 1 mole of Na3PO4 neutralises 3 moles of HCl. Therefore, number of moles of Na3PO4 = 0.004/3
= 0.0013 mol
Mass of Na3PO4 = molar mass × number of moles
= 0.0013 × 164
= 0.219 g
Since 50% of Na3PO4 was present in the sample. Let 100 g be the total mass of the substance
= 0.219 × 50 g/100 g
= 0.109 g.
(show solution)
Answers
Answer:
2.89 × 10²³ atoms of zinc
Explanation:
The number of atoms of zinc can be found by using the formula
N = n × L
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
N = 0.48 × 6.02 × 10²³
We have the final answer as
2.89 × 10²³ atoms of zinc
Hope this helps you
Answer:
2.89× 10²³ atom
Explanation:
Given data:
Number of atoms of Zn = ?
Number of moles of Zn = 0.48 mol
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
For example,
1 mole = 6.022 × 10²³ atom
0.48 mol × 6.022 × 10²³ atom / 1mol
2.89× 10²³ atom
Answers
Hello!
Answer:
Explanation:
→ The force applied to an object is equal to:
Where:
- a is the acceleration
- F is the force
- m is the mass
→ So, the acceleration of the car is equal to:
Conclusion:
The acceleration of the car is 1.30m/s².
Explanation:
acceleration is directly proportional to the force and inversely proportional to the mass of the object
a=f/m
=1700/1300
Answers
Answer:
The equilibrium will shift to the reactants and increase the concentration of CH3COOH
Explanation:
According to Le Chatelier's principle when a system at equilibrium is subjected to a change in temperature, pressure, concentration etc then the equilibrium will shift in a direction to undo the effect of the induced change.
The given reaction is:
CH3COOH ↔ CH3COO-(aq) + H+(aq)
CH3COONa exists as ions i.e. CH3COO- and Na+. Therefore, addition of CH3COONa will introduce more CH3COO- ions into the system as a result the equilibrium will shift to the left i.e. towards the reactants and will produce more of CH3COOH
Answers
The CCl₄ molecule has a tetrahedral geometry. It is a symmetrical molecule. The polarised bond thus cancels out each other due to the geometry of the molecule and that is why CCl₄is nonpolar.
Chlorine has a higher electronegativity than phosphorous. As a result, the chlorine atom has a partial negative charge relative to phosphorous. Since all three chlorine atoms pull electrons from the phosphate atom, the molecule is a polar molecule.
The reason why CCl₄is not soluble in water is because it is not soluble in polar solvents. Both PCl₃ and water are polar molecules. This is due to their shape and the electronegativity difference between the H and O molecules in water and the P and Cl molecules in PCl₃. Therefore, PCl₃in water is soluble.
To learn more about the tetrahedral geometry, refer to the link:
#SPJ6
In CCl4, the carbon molecule forms four bonds; one for each chlorine atom. Each bond contains 2 electrons, so it is satisfied.
In PCl3, Phosphorous forms only 3 bonds with chlorine, which means in order to have 8 valence electrons, it also has a lone pair of electrons, not bonded with chlorine.
Now, in CCl4, picture the shape of the molecule like a plus sign, with the carbon in the middle and the chlorine at the four ends. It is symmetrical, and therefore is nonpolar.
In PCl3, the lone pair electrons push, so to speak, the 3 chlorine atoms away, making a T-shaped molecule. Since the chlorine is more electronegative than carbon, the molecule is unbalenced, making it polar.