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3 years ago

Why is baking soda an ionic bond

2 answers:

7 0

Ionic bond is formed when 2 ions one with positive charge(s) and another with negative charge(s) chemically combines together, such as under heat.

Baking soda is also known as sodium bicarbonate (NaHCO3), which consists of sodium ions and bicarbonate ions.

Sodium ion brings 1 positive charge (Na+) meanwhile bicarbonate ion brings 1 negative charge (HCO3-). Therefore, when these 2 kind of ions combine together, one electron is transferred to a bicarbonate ion from a sodium ion, so that both of these ions can maintain a stable electron number.

Meanwhile, metallic bond is where atoms of only metals bond together, they all can make positive ions (but not used in metallic bonds), and covalent bond is where atoms of only non metals, they can all make a negative ion (also not used in covalent bonds).

Therefore, whenever a compound which consists of negative and positive ions bonded together, the bonding is ionic bond.

Kaylis [27]3 years ago

6 0

Because it is made up of sodium, a metal, and carbon, a nonmetal.

Hope I helped ♡

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Answer:

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3 years ago

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3 years ago

What is the binding energy of a nucleus that has a mass defect of 5.81*10-^29 kg

IrinaVladis [17]

Answer:

Choice A: Approximately $5.23 \times 10^{-29}$ joules.

Explanation:

Apply the famous mass-energy equivalence equation to find the energy that correspond to the $\rm 5.81\times 10^{-29}$ kilograms of mass.

$E = m \cdot c^{2}$ ,

where

$E$ stands for energy,
$m$ stands for mass, and
$c$ is the speed of light in vacuum.

The speed of light in vacuum is a constant. However, finding the right units for this value can simplify the calculations a lot. What should be the unit of $c$ ?

The mass given is in the appropriate SI unit:

Mass is in kilograms.

Thus, proceed with the speed of light in SI units. The SI unit for speed is meters per second. For the speed of light, $c \approx \rm 3.00\times 10^{8}\;m\cdot s^{-1}$ .

Apply the mass-energy equivalence:

$\begin{aligned} E &= m \cdot c^{2} \\ &= \rm 5.81\times 10^{-29}\; kg \times {\left(3.00\times 10^{8}\; m\cdot s^{-1}\right)}^{2}\\ &\approx \rm 5.23\times 10^{-12}\;kg\cdot m^{2}\cdot s^{-2} \end{aligned}$ .

The unit of energy is not in joules. Don't be alerted. Consider the definition of a joule of energy. One joule is the work done on an object when a force of one newton acts on the object in the direction of the force through the distance of one meter. (English Wikipedia.)

$\rm 1\; J = 1\; N \times 1\; m$ .

However, a force of one newton is defined as the force required to accelerated an object with a mass of one kilogram (not gram) at a rate of one meter per second squared. (English Wikipedia.)

$\begin{aligned}\rm 1\; J &= \rm 1\; N \times 1\; m\\ & = \rm \left(1\; kg\times 1\; m\cdot s^{-2}\right)\times 1\; m\\ &= \rm 1\; kg \cdot m^{2}\cdot s^{-2}\end{aligned}$ .

In other words, the mass defect here is also $\rm 5.23\times 10^{-12}\; J$ .

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3 years ago

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Complete the table to summarize the properties of the different subatomic particles. Type in your answers.

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It's mass is equal to 9.10938356 × 10⁻³¹ kilograms
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2 years ago

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