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2 years ago

An oxide and carbonate containing oxygen

Chemistry

1 answer:

exis [7]2 years ago

5 0

Answer:

example of carbonate containing oxygen :

CaCO3

( calcium carbonate having 3 atoms of oxygen )

example of oxide containing oxygen :

( carbon dioxide having 2 atoms of oxygen )

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Explanation:

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2 years ago

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2 years ago

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2 years ago

Good's buffers are compounds that are useful near neutral pH. MES buffer has pKa of 6.15, MOPS has pKa of 7.5, and HEPPS has pKa

Troyanec [42]

Answer:

MES for pH near to 6.0 and MOPS for pH near to 7.5.

Explanation:

Hello,

In this case, given that the Henderson-Hasselbach equation is:

$pH=pKa+log(\frac{[Base]}{[Acid]} )$

Good's buffers are those having pKa's near to the required pH since we look for a [Base]/[Acid] ratio to approach 1, thus, for a pH near to 7.0 a good buffer may be MOPS as it has a pKa of 7.5 and for a pH neat to 6.0 a good buffer may be MES as it has a pKa of 6.15.

Best regards.

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3 years ago

Which of the following atoms would be expected to form positive ions in binary ionic compounds: Br, Ca, Na, N, F, Al, Sn, S, Cd?

Montano1993 [528]

Answer:

Explanation:

Hello,

Binary ionic compounds are those compounds that consist of two elements and usually one has a positive ion while the other one carries a negative ion and they both combine together to form a compound.

In the options above, option A is the right answer because it has a combination of positive ions.

For ionic compounds to form, a strong electropositive element must combine with a strong electronegative element.

Most metals are usually electropositive and carry a positive ion and non metals tends to carry negative ions.

Br = non metal = negative ion

Ca = metal = positive ion

Na = metal = positive ion

N = non metal = negative ion

F = non metal = negative ion

Al = metal = positive ion

Sn = metal = positive ions

S = non metal = negative ion

Cd = metal = positive ion

Option A has a combination of all the positive ions here.

6 0

3 years ago

An oxide and carbonate containing oxygen​

An oxide and carbonate containing oxygen