![JustTraaash](/avatars/45430.jpg)
JustTraaash
25.11.2019 •
Chemistry
Anonenteric film-coated tablet is meant to dissolve in
Solved
Show answers
More tips
- H Horoscopes, Magic, Divination How to Cast a Love Spell on a Guy? Guide for Guys...
- F Family and Home How to Sew Curtain Tapes: Best Tips from Professionals...
- S Style and Beauty How are artificial nails removed?...
- S Style and Beauty How to Make Your Lips Fuller? Ideas and Tips for Beautiful Lips...
- F Food and Cooking The Disease That Haunted Abraham Lincoln...
- C Computers and Internet How to Get Rid of Windows Genuine Check?...
- H Health and Medicine How to perform artificial respiration?...
- S Style and Beauty Tricks and Tips: How to Get Rid of Freckles...
- C Computers and Internet How Do You Refill Cartridges?...
- A Auto and Moto Battle for the Relocation of The Cherkizovsky Market: Who Won?...
Answers on questions: Chemistry
- C Chemistry What reaction would be the chemical equation 2h2o- 2h2+o2 represent? a.decomposition of water b. formation of water c. combustion of water d. replacement of water...
- C Chemistry What is the hydroxide ion concentration of an acidic solution with a pH of 4.50...
- C Chemistry A student runs two experiments with a constant-volume bomb calorimeter containing 1500.g of water. First, a 7.500g tablet of benzoic acid C6H5CO2H is put into the bomb and...
- C Chemistry What is the identity of your unknown, how do you know? (flame test lab)...
- C Chemistry The scientific evidence that scientists use in supporting or critiquing the conclusions of experiments usually consists of...
- C Chemistry List the observable properties of an acid...
- S Social Studies What is judicial review?...
- M Mathematics The partial receipt below shows the money, in dollars, Ryan spent at an online clothing retailer. PRODUCT QTY PRICE TOTAL Socks 3 2.00 6.00 V-Neck 2 8.00 16.00 Shorts 1 15.00...
- M Mathematics A traffic engineer interested in safety research wanted to know the factors that influence road rage. The outcome measure was whether road rage was present (1 = yes, 0 = no)....
- M Mathematics in a sale the original price of a bag was reduced by 1-5( the 5 is meant to be under the line but it wont let me) the sale of the bag was £29.40. work out the original price...
Ответ:
10.8amu
Explanation:
Given parameters:
Abundance of B - 10 = 20% = 0.2
Abundance of B - 11 = 80% = 0.8
Unknown:
Atomic mass of Boron = ?
Solution:
The atomic mass of Boron can be can be calculated using the expression below;
Atomic mass = (abundance of B - 10 x mass of isotope B - 10 ) +( abundance of B - 11 x mass of isotope B- 11)
Atomic mass = (0.2 x 10) + (0.8 x 11) = 2 + 8.8 = 10.8amu