sig

  1. H

    Kiloyear sig fig help?

    Some dried beans were discovered to have 1/8 the carbon-14 of a living bean. How old are the beans? Express your answer to 3 sig figs in kiloyears (Kyr).
  2. M

    Rounding WHen exactly 5

    Question: I am very confused when to round up or down when given a situation such as this: round to 4 sig figs 30.345939 Answer: I thought that if an even number is followed by five you have to round down. Therefore wouldn't the answer be 30.34? correct answer: 30.35 why is this so? ex)...
  3. K

    Sig Figs and Molar Mass

    So, I get molar mass but how do you know how many sig figs need to go after finding molar mass?
  4. K

    More sig fig help:

    Hello, I am still getting used to working with sig figs, and had a few practice problems I wanted to run by someone. I will leave a few samples below and show how I solved them. I would really like someone to correct me if I'm wrong and tell me what I did. ;) A. 423.6 ml + 62.05 ml. Using...