Answer:
C
cell wall only in plants
chloroplast only in plants
enlarged vacuoles only in plants
cell membrane in both
hope this helps :)
Explanation:
Answer:
No more than 0.1 mL of hydrochloricton acid
Answer:
Method 1 - precision
Method 2 - accuracy
Method 3 - precision
Method 4 - accuracy
Explanation:
The accuracy of a method refers to how close the experimental result is to the accepted value. Accuracy could be checked by carrying out the required test on the standard and not on the sample or by adding a known amount of analyte to the sample so that the results obtained can be carefully compared.
Precision on the other hand, refers to how close the results of a replicate analysis are to each other. In testing for precision, the analysis must be carried out several times, in order to check how close the results are to each other.
Ethanol with chemical formula of C2H5OH is also known as Ethyl alcohol.
Explanation:
- The reaction between oil and NaOH or sodium hydroxide is also known as the process of Saponification.
- The mixture of ethanol and water is completely homogenous, miscible and soluble in all proportions.
- A mixture of ethanol and water is used to perform this reaction of Saponification is because this mixture of ethanol plus water prevents fat from reacting with oxygen present in the air.
- Since this mixture is less polar than water it will help to dissolve all the non-polar fats present, making its reaction with Sodium hydroxide easier.
