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3 years ago

A mass of 80 grams of Bromine would be

Chemistry

1 answer:

Elis [28]3 years ago

8 0

I’m pretty sure it’s a

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he balanced net ionic equation for precipitation of CaCO 3 when aqueous solutions of Na 2CO 3 and CaCl 2 are mixed is ________.

ale4655 [162]

Answer:

Net ionic equation: $Ca^{2+}(aq.)+CO_{3}^{2-}(aq.)\rightarrow CaCO_{3}(s)$

Explanation:

Reaction between $Na_{2}CO_{3}$ and $CaCl_{2}$ is an example of double decomposition reaction where each cations and anions of each salt exchange their partners during reaction to form $CaCO_{3}$ and NaCl

$CaCO_{3}$ is an insoluble salt. Hence precipitation of $CaCO_{3}$ has been observed.

Molecular equation: $Na_{2}CO_{3}(aq.)+CaCl_{2}(aq.)\rightarrow 2NaCl(aq.)+CaCO_{3}(s)$

Total ionic equation:

$2Na^{+}(aq.)+CO_{3}^{2-}(aq.)+Ca^{2+}(aq.)+2Cl^{-}(aq.)\rightarrow CaCO_{3}(s)+2Na^{+}(aq.)+2Cl^{-}(aq.)$

Here $Na^{+}$ and $Na^{+}$ are spectator ions. Therefore they are eliminated from both side of total ionic equation to get net ionic equation.

Net ionic equation: $Ca^{2+}(aq.)+CO_{3}^{2-}(aq.)\rightarrow CaCO_{3}(s)$

6 0

4 years ago

Which generally occurs as temperature increases?

grin007 [14]

Solubility increases.

7 0

3 years ago

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Rounded to the nearest whole number, how many electrons are in an atom of zirconium?

Dafna1 [17]

Answer:

40 electrons

Explanation:

The element of zirconium (Zr) has an atomic number of 40, which means it has 40 protons and 40 electrons. It also has a molar mass of 91.224 g/mol.

6 0

3 years ago

If 100 yards = 1 football field, what is the length, in meters, of 4.9<br> football fields?

Veseljchak [2.6K]

* Answer: 448.056 meters *
——
1 yard = .9144 meters (according to Google)
100 yards= 91.44 meters
——
100*4.9= 490 yards
490 yards = 448.056 meters

* 4.9 Football fields= 448.056 meters *

I hope this helps! :)

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3 years ago

Which describes the difference between frogs and bacteria?

likoan [24]

Answer:the first one

Explanation:Bacteria living on the skin of frogs could save them from a deadly virus, ... With Differences in the Composition of the Skin Microbiome of a Wild

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3 years ago

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