Answer:
option "B" is correct (substance 2)
Answer:
Physical
Explanation:
Olive oil, vinegar, salt, and pepper are shaken together to make salad dressing. Physical or chemical change?
Physical
269,937 hope this helps!!
Answer:
0.417M
Explanation:
Equation of the reaction
2HCl+Na2CO3→2NaCl+H2O+CO2
From dilution principle
no of mole=conc × volume
from the balanced equation
no of mole of Na2CO3=2× no of mole of HCl
HCl=acid=A
Na2CO3=base=B
since n=cv
Conc of base × vol of base=2× conc of acid×volume of acid
2M×5ml=2×12M×Volume of acid
volume of acid=10/24
=0.417(3 decimal place)
Answer:
The systematic name of the complex is: ![[Cu(en)_2(H_2O)_2]I_2](https://tex.z-dn.net/?f=%5BCu%28en%29_2%28H_2O%29_2%5DI_2)
diaquabisethylenediaminecopper(II) iodide
Explanation:
= Given complex whose naming is to be done:
Rules for naming of the coordination compounds :
- The name of ligand should be written first and then metal.
- The charge of metal indicated with the Roman numerals and enclosed in the parenthesis after metal name.
- The ligand's names written should be in an alphabetical order before the metal ion.
- Ligands that include a numerical prefix in the name use the prefixes bis or dia for 2, tris for 3, or tetrakis for 4 to indicate their number.
- If the complex ion is an anion, we drop the ending of the metal name and add –ate.
The cationic part of the complex: diaquabisethylenediamine copper(II)
The anionic part of the complex: iodide
The systematic name of the complex is: ![[Cu(en)_2(H_2O)_2]I_2](https://tex.z-dn.net/?f=%5BCu%28en%29_2%28H_2O%29_2%5DI_2)
diaquabisethylenediaminecopper(II) iodide