It is a mixture
Explanation:
Food coloring is able to separate into different dyes because it just a simple mixture of different color pigments.
Under a chromatogram the different colors will migrate relatively over an absorbent.
A mixture is an impure substance with the following properties:
- composition is indefinite as they are made up of two or more elements or compounds in any proportion by mass.
- They are able to retain their identities i.e physical properties are maintained.
- Their constituents reacts differently to changed conditions.
- They can easily be separated into constituent by physical methods.
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Heterogeneous mixtures brainly.com/question/1446244
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Answer:
a) 0.925 mol Na2CO3 can be theoretically produced
b) 0.075 moles of the excess starting material remains
Explanation:
balaced chemical:
2 NaOH(s) + CO2(g) ↔ Na2CO3(s) + H2O(aq)
1.85n 1.00n Xn
moles theor. Na2CO3:
⇒ nNaCO3 = 1.85nNaOH * ( nNa2CO3 / 2nNaOH)
⇒ nNa2CO3 = 0.925nNa2CO3
moles of the excess:
⇒moles CO2 react = 1.85nNaOH * nCO2 / 2nNaOH = 0.925n CO2
⇒moles CO2 excess = 1.00n - 0.925n = 0.075n excess CO2
Answer:
Electrons that occur together in an orbital are called an electron pair. An electron will always try to enter the orbital with the lowest energy. ... In other words, within one energy level, electrons will fill an s orbital before starting to fill p orbitals. The s subshell can hold 2 electrons.
Explanation: PLZ BRAIN LeST THANKS :)
Answer: Option (B) is the correct answer.
Explanation:
When the book was at the shelf, it had only potential energy as potential energy is the energy possessed due to the position of an object.
Therefore, when the book falls from the book shelf it gains kinetic energy as kinetic energy is the energy possessed due to the motion of an object.
Thus, when the books is falling from the top shelf then the motion of book increases therefore, we can conclude that the potential energy decreases as kinetic energy increases.
Cr^2+ + H2MoO4 + H+ → Cr^3+ + Mo + H2O
Cr goes from +2 to +3 or loses one e-
Mo is +6 in H2MoO4 so it goes to 0 gaining 6 e-
so we must multiply Cr by 6 to balance e-
6Cr^2+ + H2MoO4 + H+ → 6Cr^3+ + Mo + H2O
now we balance the spectators
take O first - 4 on left then, change the right side
6Cr^2+ + H2MoO4 + H+ → 6Cr^3+ + Mo + 4H2O
now we have 8 H's on the right
we don't want to touch the H2MoO4
so we make H+ up to 6 for a total of 8 on the left
6Cr^2+ + H2MoO4 + 6H+ → 6Cr^3+ + Mo + 4H2O
Then, It's balanced
