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Lorico [155]
3 years ago
11

What property can be used to separate oil from milk?

Chemistry
1 answer:
Usimov [2.4K]3 years ago
3 0

Answer:

Density oil will float

Explanation:

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A 1.0l buffer solution contains 0.100 mol of hc2h3o2 and 0.100 mol of nac2h3o2. the value of ka for hc2h3o2 is 1.8×10−5. part a
Mandarinka [93]
There are two ways to solve this problem. We can use the ICE method which is tedious and lengthy or use the Henderson–Hasselbalch equation. This equation relates pH and the concentration of the ions in the solution. It is expressed as

pH = pKa + log [A]/[HA] 

 where pKa = - log [Ka]
[A] is the concentration of the conjugate base
[HA] is the concentration of the acid

Given:
Ka = 1.8x10^-5
NaOH added = 0.015 mol
HC2H3O2 = 0.1 mol
NaC2H3O2 = 0.1 mol

Solution:
pKa = - log ( 1.8x10^-5) = 4.74

[A] = 0.015 mol + 0.100 mol = .115 moles
[HA] = .1 - 0.015 = 0.085 moles

pH = 4.74 + log (.115/0.085)
pH = 4.87
6 0
3 years ago
What do AIA, SAG, AFP and AMA all stand for? Select four options.
astra-53 [7]

Answer:

ALA.American Institute of Architects

SAG.Screen Actor Guild

AFP.Association For Finance Professional

AMA.American Medical Association

3 0
3 years ago
More knowledge about de the topic of momenclature of organic compounds​
vichka [17]

Answer:

The primary function of chemical nomenclature is to ensure that a spoken or written chemical name leaves no ambiguity concerning which chemical compound the name refers to: each chemical name should refer to a single sub

3 0
2 years ago
Balance these equations!<br> 1)<br> AIBr; +<br> K-<br> KBr +<br> AI
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Answer:

Instructions on balancing chemical equations:

Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below

Always use the upper case for the first character in the element name and the lower case for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.     Compare: Co - cobalt and CO - carbon monoxide

To enter an electron into a chemical equation use {-} or e

To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}.

Example: Fe{3+} + I{-} = Fe{2+} + I2

Substitute immutable groups in chemical compounds to avoid ambiguity.

For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced,

but PhC2H5 + O2 = PhOH + CO2 + H2O will

Compound states [like (s) (aq) or (g)] are not required.

If you do not know what products are enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.

Reaction stoichiometry could be computed for a balanced equation. Enter either the number of moles or weight for one of the compounds to compute the rest.

Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reage

Explanation:

3 0
3 years ago
Stomach acid is predominately hydrochloric acid. Write the balanced chemical equation for the neutralization reaction between HC
bogdanovich [222]

Answer:

HCl + Mg(OH2)  ---> MgCl2 + H2O

Explanation:

hydrochloric acid + magnesium hydroxides  ==> magnesium Chloride (a salt) + Water

HCl + Mg(OH2)  ---> MgCl2 + H2O

8 0
3 years ago
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