Answer Posted / karri.sureshkumar07

hardness means presence of Calcium and Magnesium carbonates
and bicarbonates, these can be analysed by titration with
EDTA ( Ethylene Diamino tetra acetic acid ) using muroxide
and Eriochrome black-T as indicators

For calcium hardness muroxide is the indicator colour
change is pink to violet ( brinjal flower colour)

For total hardness determination EBT is the indicator
colour cange is pink to blue

Define dipole moment?

1124

---

Head-to-tail polymerization of propylene is observed with the [cp2zr(r)]+ catalyst. Explain this result on the basis of molecular-level interactions. : Polymer Chemistry

1071

---

An atom has 18 protons and 22 neutrons. Tell me its mass number?

1042

---

can you email me because I have a report and I need you to answer these questions if you would like to if not I completely under stand.

2186

---

What do you mean by redox reaction? : Electrochemistry Corrosion

989

---

Give an example of a polysaccharide?

1231

---

Explain what is the dipole moment of chlorooctane?

1311

---

A polymer's structure influences its physical properties. Describe two structural variations that are possible for polypropylene but not for polyethylene. : Polymer Chemistry

1151

---

How can chemists control which type of polyethylene (ldpe vs. Hdpe) is generated? : Polymer Chemistry

1778

---

How would you describe the orientation of the ligands around the zr center in the homogeneous zirconium catalyst? : Polymer Chemistry

1060

---

when are the result of sbi clerical come

2504

---

What are the other ways in which chemists can manipulate the properties of polymers? : Polymer Chemistry

1240

---

Tell me how many milliliters of water would you add to 100 milliliters of a 0.350 molar solution to make a 0.100 molar solution?

994

---

Tell me how many significant figures are there in the number 0.0036?

1092

---

Why do different polymers have different properties? : Polymer Chemistry

1269

---