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BaLLatris [955]
3 years ago
13

Suppose a student performed the titration, but the solution never turned pink. Check all the possible explanations. The student

forgot to add phenolphthalein. The student added too much phenolphthalein. The student was not patient enough. The student used HCl as both the analyte and the titrant. The student used NaOH as both the analyte and the titrant.
Chemistry
2 answers:
Black_prince [1.1K]3 years ago
5 0
The answer is The student forgot to add phenolphthalein. 
Phenolphthalein<span> is a </span>chemical compound<span> with the </span>formula C20H14O4<span> and is often written as "</span>HIn" or "phph<span>" in shorthand notation. Phenolphthalein is often used as an indicator in </span>acid–base titrations<span>. For this application, it turns colorless in </span>acidic<span> solutions and pink in </span>basic <span>solutions.</span>
Kryger [21]3 years ago
5 0
The answers on E2020 are A, C, and D. I hope this helps. 
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How are energy storage molecules affected if there is LESS carbon dioxide?
kipiarov [429]

Answer:

When there is less carbon (in the form of carbon dioxide) in abiotic matter, less carbon is available for producers making energy storage molecules. When there is more sunlight, producers can make more energy storage molecules from the carbon in carbon dioxide.

Hope this helps.

7 0
3 years ago
The electron configuration of an atom is 1s22s22p63s23p3. The atomic number of the atom is...
Leya [2.2K]

Answer:

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Explanation:

4 0
3 years ago
Identify the type of reaction depicted below:<br> 2SO2(g)<br> +<br> O2(g) --&gt; 2SO3(g)
ioda

Answer:

Combination reaction

Explanation:

In Chemistry, elements and compounds are involved in a process called chemical reactions, which are of different types namely: combination, decomposition, double replacement, combustion etc. A combination reaction is that reaction in which two or more substances called the REACTANTS combine together to form a single new substance called the PRODUCT.

In this case, a reaction is depicted as follows:

2SO2(g) + O2(g) --> 2SO3(g)

In this reaction, compound SO2 combines chemically with element O2 to form a single new compound SO3. Hence, this is a type of COMBINATION REACTION.

4 0
3 years ago
Calculate the relative density of carbon monoxide and carbon dioxide with respect to air.
JulsSmile [24]
Density is proportional to molar mass, assuming pressure and temperature remain constant. Therefore, since CO has a molar mass of 28 and CO2 has a molar mass of 44:
The relative density of CO vs air is 28/29 = 0.9655.
The relative density of CO2 vs air is 44/29 = 1.517.

3 0
3 years ago
PLS HELP IF YOU WANT A BRAINLIEST BEST ANSWER CHOICE, GETS A BRAINLIEST
Natalija [7]

Answer:

It would be 25% because each equals 25%.

Explanation:

There is 4 "shapes" each can equal 25 because 25+25+25+25=100.

4 0
3 years ago
Read 2 more answers
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