![andeaGonzllezz](/avatars/7796.jpg)
andeaGonzllezz
20.09.2020 •
Chemistry
In an atom of an element there are a fixed number of electrons. If the total mass of electrons in 1 mole (6.022 x 1023) of atoms of a certain element is 18.65 mg, how many protons must there be in the nucleus of that atom? (mass of electron = 9.109 x 10–28 g).
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 Express 0.61 in scientific notation....
- C Chemistry Glyceraldehyde-3-phosphate is an important intermediate molecule in the cell s metabolic pathways because ....
- C Chemistry Dehydrohalogenation is the loss of hydrogen and a halogen from an alkyl halide. It is one of the most useful methods for preparing alkenes by elimination. The synthesis...
- C Chemistry Can be broken down into the component elements by chemical changes...
- C Chemistry If 200 mg of hcl is added to water to achieve a final volume of 1l, what is the final ph?...
- C Chemistry 100 point and brainlist...
- C Chemistry Dos materiales a diferentes temperaturas se dejan en contacto térmico en un sistema cerrado, durante el tiempo necesario para que se encuentren en equilibrio térmico....
- C Chemistry Who else isnt learning on online school so we just come on here for answers....
- C Chemistry Define matterThe correct answer will be marked as brainliest...
- B Business When Ken starts his job at the customer service desk, he works with a nice man named Tom who is in his 50’s. Tom has a great relationship with the supervisor and all...
Ответ:
No. of protons = 34
Explanation:
First we need to calculate the number of electrons in one mole of the the element:
No. of electrons per mole = Total Mass of Electrons/Mass of 1 Electron
No. of electrons per mole = (18.65 x 10⁻³ g)/(9.109 x 10⁻²⁸ g)
No. of electrons per mole = 2.04 x 10²⁵ electrons/mol
Now, we calculate the no. of electrons in 1 atom:
No. of electrons per atom = No. of Electrons per mole/No. of atoms per mole
No. of electrons per atom = (2.04 x 10²⁵ electrons/mol)/(6.022 x 10²³ atoms/mol)
No. of electrons per atom = 34 electrons/atom
Since, the no. of protons in a pure element are equal to the number of electrons. Therefore,
No. of protons = 34
Ответ:
The correct answer is B, Te molecules in the cake are moving faster than the molecules in the hand
Explanation: