Both flowering and nonflowering plants possess specialized structures that help them in reproduction. Conifers are nonflowering
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The mass of HCHO2 and NaCHO2 to be added to the buffer solution are 0.23g and 0.44g respectively
Data;
- Volume of solution = 260mL
- conc. of HCHO2 = 2.5*10^-2M
- conc. of NaCHO2 = 2.5*10^-2M
To calculate the mass of reagent added, let's start with HCHO2
The mass of HCHO2 to be added is the number of moles of HCHO2 multiplied by it's molar mass.
The mass of NaCHO2 to be added in the buffer solution is
The mass of HCHO2 and NaCHO2 to be added to the buffer solution are 0.23g and 0.44g respectively
Learn more about buffer solution here;
Answer:
Option d. f sublevel
Explanation:
Inner transition elements includes:
Lanthanides
Actinides
Lanthanides includes elements having atomic number ranges from 52-71.
Actinides includes elements having atomic number ranges from 89-103.
Actinides and lanthanides have been placed separately in two rows below all the other elements.
General electronic configuration of lanthanides:
General electronic configuration of actinides:
As last electrons enters in f sub shell or sublevel, these elements are also called f-block elements.