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2 years ago

What is the chemical name of the compound Na2CO3? Use the list of polyatomic ions and the periodic table to help you answer.

Chemistry

2 answers:

m_a_m_a [10]2 years ago

5 0

Answer:

I believe the answer is B. Sodium carbonate

KonstantinChe [14]2 years ago

3 0

Answer : The correct option is, (B) Sodium carbonate

Explanation :

$Na_2CO_3$ It is an ionic compound because sodium element is a metal and carbonate ion is polyatomic ion. When the metal element combine with the polyatomic ion they form ionic compound.

$CO_3^{2-}$ = carbonate ion

While naming of ionic compounds, we write cation first then anion. Here anion is a polyatomic ion. So, the name of the compound is, sodium carbonate.

Hence, the correct option is, (B) Sodium carbonate

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This is the balanced chemical equation for a reaction

Gekata [30.6K]

Answer: C

Explanation:

No explanation

7 0

3 years ago

Read 2 more answers

A solution contains an unknown mass of dissolved barium ions. When sodium sulfate is added to the solution, a white precipitate

AVprozaik [17]

Answer:

0.1388 g

Explanation:

The mass of $BaSO_4$ obtained on precipitation = 236 mg

1 mg = 0.001 g

Thus, Mass of $BaSO_4$ = 0.236 g

Molar mass of $BaSO_4$ = 233.43 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{0.236\ g}{233.43\ g/mol}$

Moles of $BaSO_4$ = 0.001011 moles

According to the reaction,

$Ba^{2+}+SO_4{2-}\rightarrow BaSO_4$

Thus, moles of barium = 0.001011 moles

Molar mass of barium = 137.327 g/mol

Thus, Mass = Moles * Molar mass = 0.001011*137.327 g = 0.1388 g

4 0

3 years ago

Determine the number of unpaired electrons expected for [Fe(NO2)6]3−and for [FeF6]3− in terms of crystal field theory.

arsen [322]

Answer:

A. One unpaired electron

B. 5 unpaired electrons

Explanation:

In A ,Fe is in +3 oxidation state and Electronic configuration- [Ar]3d5

And NO2 is a strong field ligand hence it causes pairing in t2g orbitals and results one unpaired electron in dZX orbital.

In B, also Fe is in +3 oxidation state but F is weak field ligand hence causes no pairing of Electrons hence it results 5 unpaired electrons with electronic configuration t2g^3 eg^2

7 0

3 years ago

Which set of changes does not involve breaking or forming chemilcal bonds

sineoko [7]

<h2><u>Answer:</u></h2>

It wasn't an adjustment in the condition of issue on the grounds that the vitality in the can did not change. Additionally, since this was a physical change, the atoms in the can are as yet similar particles. No synthetic bonds were made or broken. You added enough vitality to make a stage change from strong to fluid.

The main changes recorded which don't include framing or breaking substance bonds would bubble and liquefying. Bubbling and liquefying are physical changes as opposed to synthetic changes, so no new items are shaped.

6 0

3 years ago

2. During asexual reproduction in paramecia, a single paramecium becomes two new

zloy xaker [14]

Answer:

ion no

Explanation:

ion no

4 0

2 years ago