A20.0 gram sample of an element contains 4.95 x 1023 atoms. what is the element?
Solved
Show answers
More tips
- S Sport Playing Bowling: Rules and Advice for Novices...
- C Computers and Internet How to Properly Repartition a Hard Drive?...
- A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
- C Computers and Internet Which Phone is Best for Internet Surfing?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
Answers on questions: Chemistry
- C Chemistry The male typically deposits a spermatophore on the ground or in the water and the female picks this up. The female salamander then lays its eggs on a stick or rock near water or...
- C Chemistry What is the second quantum number of a 1s^2 electron in phosphorus, 1s22s22p63523p3? O A. ) = 3 B. /= 0 O C. 1 = 1 D. /= 2...
- C Chemistry If you were a predator bird, which moth would be easier prey to hunt? Why?...
- C Chemistry The characteristics odour of pineapple is due to ethylbutyrate, a compound containing carbon, hydrogen and oxygen. Combustion of 2.78mg of ethylbutyrate leads to formation of 6.32mg...
- C Chemistry Which is the least viscous? A C20H42 B. CCL4 C. CH3OH D. CHCI3 E. C6H6...
- C Chemistry Which is the Michael Donor?...
- C Chemistry Analyze the given diagram of the carbon cycle. An image of carbon cycle is shown. The sun, a cloud, two trees, one towards left and the other towards right, an animal, lake, and...
- E English What other rhetorical devices do you see Wiesel use? (Refer to the reading “What is a rhetorical device?” to find examples). Induce evidence from Wiesel’s speech....
- S Social Studies 2. What role did style and the media play in the growth of the Black Panthers? 3. What was the purpose of COINTELPRO? How did the FBI and law enforcement cripple the Black Panther...
- M Mathematics Data Distribution Online content What are the measures of center for a data set? plz write about 5 sentences for this project...
Ответ:
4.95 x 10^23 atoms / 6.022 x 10^23 atoms (one whole mole of any element) = .8219860511 or ~82% of 1 mole
Now we know that, find what to multiply 20 g by to get the rest of the mole.
1 mole / .8219860511 mole = 1.216565657
20 g x 1.216565657 = ~24.33 g / mol
Now that you have grams per mole, you can look at the periodic table and the molar masses to see which this number is closely aligned.
Your answer is Magnesium (Mg), which has a molar mass of 24.305 g
Ответ: