![carafaith02](/avatars/11560.jpg)
carafaith02
29.08.2019 •
Chemistry
How manny molecules (formula units for ionic compound) are present in following quantities? 0.250 mole of h2o
Solved
Show answers
More tips
- H Health and Medicine Get Rid of Warts: Simple and Effective Ways...
- S Style and Beauty How to Choose the Perfect Hair Color?...
- C Computers and Internet Best iPad Games: Our Opinion...
- A Animals and plants Man s Best Friend: Which Dog Breed Is the Most Friendly?...
- H Health and Medicine 10 Simple Techniques on How to Boost Your Mood...
- G Goods and services How to Choose the Right High Chair for Your Baby?...
- S Style and Beauty Learn how to tie a keffiyeh on your head like a pro...
- S Style and Beauty How to braid friendship bracelets?...
Answers on questions: Chemistry
- C Chemistry The circulatory system in animals is similar to (1) photosynthesis in plants (2) vascular transport in plants (3) transpiration in plants (4) digestion is plants...
- C Chemistry Balance each chemical equation. Hg2(C2H3O2)2(aq)+KCl(aq)→Hg2Cl2(s)+KC2H3O2(aq)...
- C Chemistry Sodium azide (nan3) yields n2 gas when heated to 300 c, a reaction used in automobile airbags...
- C Chemistry given that ������w for water is 2.4×10−14 at 37 ∘c, calculate the ph of a neutral aqueous solution at 37 ∘c, which is the normal human body temperature....
- C Chemistry In the freudian scheme of personality development, a/an phase immediately precedes the emergence of a genital stage. a. oral b. ana| c. oedipal or electra d. latency...
- C Chemistry How many orbitals are in the first energy level? second energy level? name these orbitals....
- C Chemistry What is proportional to the energy of electromagnetic wave...
- C Chemistry Astudent took the weighted average of the isotopes that make up one element. what was the student trying to determine? the atomic number of the element the atomic mass of...
- C Chemistry What element is in column 7a period 4? select one: 0 a. manganesseb. none of these are in that locationc. lodined. bh - element #107e. bromine...
- C Chemistry What is the electron configuration for the central atom of brf3...
Ответ:
0.250 moles • 6.02x10^23 molecules = 1.51x10^23 Molecules of H2O
3 sig figs also.
Use Stoichiometry and Alvagadro's number (6.02x10^23) to solve this or any problem in the future.
Moles to Molecules or Atoms just multiply.
Grams to Molecules or atoms you must go grams to moles first. Do this my dividing the grams of the substance by it's molar mass and that will give you moles. Then, repeat like before and times by Alvagadro's number for the answer. That number is like what a "dozen" is to eggs. There are 12 eggs in a dozen. It is just a unit of measurment. There are 6.02x10^23 Atoms (eggs) in one Mole (Dozen). You should know this if your teacher gave this problem.
Ответ:
Cesium.
Groups are the vertical columns that run up and down while periods are the horizontal rows. So to find the answer to this, go to the first column (Group 1) and find the sixth period (row 6) which will land you on Cesium, element 55.
Hope this helps!