how to collect resin

Bakelite is made from phenol and formaldehyde in the presence of a base catalyst. It involves formation of methylene bridges at the ortho and para positions. The reaction starts with the initial formation of ortho and/or para-hydroxymethyl phenol derivatives which further react with phenol to form ..

Giant organic molecules having acidic or basic groups are known as Ion-exchange resins. Acid resins contain the acid group (- COOH). Basic resins contain the basic group [(-NH )OH - ], i.e., substituted ammonium hydroxide group. Acid and basic ion exchange resins..

The distal convoluted tubule continues to form the collecting tubu..

Several collecting tubules fuse to form large collecting ducts which pass downwards from the cortex to the medulla regio..

Irena collected 7 books, Zelma collected 3 books, and Valerie collected 3 books at a country fair. Find the total number of books they collected altogether. => 16 or 15 or 13 or 11..

William and Tim ran a fundraising campaign. William collected $6 more than Tim. How much did William collect, if Tim collected $12? => $19 or $21 or $23 or $18..

John collected 17 stamps and his friend Tom collected 5 stamps. How many more did John collect than Tom? => 14 or 11 or 12 or 13..

Amy has collected 831 marbles. If she wants to collect 1,000 marbles, estimate how many more marbles she needs to collect. => 200 or 100 or 70 or 300..

Sam collected few marbles. 1 out of every 4 marbles that he collected were red in color. What percent of the collected marbles were red? => 25% or 2.5 or 0.25 or 0.025..