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3 years ago

NaC2H3O2 product or reactant

Chemistry

1 answer:

Aloiza [94]3 years ago

6 0

Answer:

the reaction between vinegar and baking soda, the reactants are vinegar (acetic acid) and baking soda (sodium bicarbonate). The products are sodium acetate, water, and carbon dioxide gas.

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Which of the following describes a Brønsted-Lowry base?

Mice21 [21]

__ Brainliest if helped!

Bronsted-Lowry definition of Bases are Proton acceptors,

or i.e. "A hydrogen ion acceptor"

4 0

3 years ago

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The painkiller, Advil® contains the active ingredient ibuprofen (IB), which has a pKb of

denis23 [38]

This problem is providing the basic dissociation constant of ibuprofen (IB) as 5.20, its pH as 8.20 and is requiring the equilibrium concentration of the aforementioned drug by giving the chemical equation at equilibrium it takes place. The obtained result turned out to be D) 4.0 × 10−7 M, according to the following work:

First of all, we set up an equilibrium expression for the given chemical equation at equilibrium, in which water is omitted for it is liquid and just aqueous species are allowed to be included:

$Kb=\frac{[IBH^+][OH^-]}{[IB]}$

Next, we calculate the concentration of hydroxide ions and the Kb due to the fact that both the pH and pKb were given:

$pOH=14-8.20=5.80$

$[OH^-]=10^{-5.8}=1.585x10^{-6}M$

$Kb=10^{-5.20}=6.31x10^{-6}$

Then, since the concentration of these ions equal that of the conjugated acid of the ibuprofen (IBH⁺), we can plug in these and the Kb to obtain:

$6.31x10^{-6}=\frac{(1.585x10^{-6})(1.585x10^{-6})}{[IB]}$

Finally, we solve for the equilibrium concentration of ibuprofen:

$[IB]=\frac{(1.585x10^{-6})(1.585x10^{-6})}{6.31x10^{-6}}=4.0x10^{-7}$

Learn more:

(Weak base equilibrium calculation) brainly.com/question/9426156

4 0

3 years ago

How might emission spectra be used in studying stars?

nordsb [41]

Answer:

Emission spectra may be used in studying stars in order to determine what atoms makeup the individual star produces, due to the fact that each atom’s emission spectra biunique, one can observe the spectra emitted by the star and identify the atoms that are released by the light the star produces.

5 0

3 years ago

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The breaking and forming of bonds between atoms in substances results in changes in the _______ contained in the substances.

photoshop1234 [79]

Answer:

Electrons

Explanation:

The breaking and forming of bonds between atoms in substances results in changes in the number of electrons in the substance.

Atoms combined in order to share, gain or lose electrons for it to be stable.
The noble gases have a set up configuration which makes them stable.
All atom tend to mimic the noble gases.

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3 years ago

Africa

yawa3891 [41]

Answer:

I feel that "The Mesosaurus could not swim between the continents in the open ocean, so the fossils

show that the continents must have been together in the past." Is the best answer.

Explanation:

Because this is a true statement and even scientists belive this is true.

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3 years ago

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