The correct student would be student D since an ionic bond is made up of a metal and nonmetal where metals usually give electrons and nonmetals take.
Answer is: Student D: Assets of a small company being taken over by a large company.
Ionic bond is the electrostatic attraction between oppositely charged ions (cations and anions).
For example, compound magnesium chloride (MgCl₂) has ionic bond.
In this example, chlorine is large company, because it has greater electronegativity than magnesium (small company) and take electrons (assets) from it.
Magnesium (Mg) transfers two electrons, became positive cation, to chlorine (Cl), which became negative anion.
Magnesium is metal from group 2 and chlorine is nonmetal from group 17 of the Periodic table.
Electronegativity (χ) is a property that describes the tendency of an atom to attract a shared pair of electrons.
Which of the following statements about Dalton’s atomic theory is true?
Dalton’s theory recognized that all matter is composed of atoms.
Dalton’s theory recognized the existence of smaller particles within atoms.
Dalton’s theory did not account for the similarities of atoms of the same element.
Dalton’s theory stated that atoms could not combine with each other.
We have to get the true statement about Dalton's atomic theory.
The true statement is: Dalton’s theory recognized that all matter is composed of atoms.
According to Dalton's atomic theory, all matter is made of atoms and atoms are indivisible and not destructible. So, the statement -Dalton’s theory recognized that all matter is composed of atoms- is true whereas the statement - Dalton’s theory recognized the existence of smaller particles within atoms is false.
As per Dalton's theory, all atoms of a given elements are identical in mass and properties, so the statement -Dalton’s theory did not account for the similarities of atoms of the same element is false.
Also, compounds are formed by a combination of two or more different kinds of atoms hence the statement - Dalton’s theory stated that atoms could not combine with each other is false.
Answer:
evidence that some kinds of matter are made up of waves instead of particles
observations that cannot be explained by the theory
Explanation: these ones are right trust
How to determine the amount of electrons transferred in a redox reaction
The amount of electrons transferred depends on how many electrons an element gains/loses. Metals normally lose electrons and nonmetals gain electrons to attain a total of 8 electrons.
How many moles are equal to 89.23 g of calcium oxide
the molecular formula of calcium oxide - CaO
The molar mass of CaO - 40 + 16 = 56 g/mol
Which means that 1 mol weighs 56 g
Therefore 56 g of CaO is - 1 mol
Then 89.23 g is equivalent to - 1/56 x 89.23 = 1.6 mol of CaO.
Final answer:
To find the number of moles in 89.23 g of calcium oxide, divide the mass by the molar mass of CaO, which is 56.0 g/mol, resulting in approximately 1.5934 moles.
Explanation:
To calculate the number of moles equivalent to 89.23 grams of calcium oxide (CaO), one must use the molar mass of CaO as a conversion factor. The molar mass of CaO, where calcium (Ca) has an atomic mass of 40.0 u and oxygen (O) has an atomic mass of 16.0 u, is 40.0 g/mol + 16.0 g/mol = 56.0 g/mol.
The number of moles of CaO can be determined by dividing the given mass by the molar mass:
Number of moles of CaO = (mass of CaO) / (molar mass of CaO)
= 89.23 g / 56.0 g/mol
= 1.5934 moles
Therefore, 89.23 grams of calcium oxide are equal to approximately 1.5934 moles of CaO.