Which statement is true about the activity series? (5 points)
elements are listed according to their reactivity.
elements are listed according to their atomic number.
elements are listed according to their atomic radius.
elements are listed according to their atomic mass.
which of the following statements is true about nuclear fusion? (5 points)
it occurs in the sun.
a heavy atom is split.
it can be controlled easily.
an electron is lost by the atom.
the table shows four reactions.
reactionsreaction equation
1 c3h8 + 5o2 → 3co2 + 4h2o
2 c6h12o6 + 6o2 → 6co2 + 6h2o
3 agno3 + nacl → agcl + nano3
4 2fe + o2 → 2feo
which of the above reactions is an example of a combustion and also a synthesis reaction? (5 points)
1
2
3
4
Solved
Show answers
More tips
- D Dating, Love, Relationships Why do we feel shame?...
- S Style and Beauty How to Properly Apply Eye Makeup: Tips from a Professional Makeup Artist...
- A Animals and plants How ants survive winter: exploring the secrets of their winter life...
- F Food and Cooking Discover How to Properly Prepare Dough for Rasstegai...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- F Family and Home Protect Your Home or Apartment from Pesky Ants...
- O Other What is a Disk Emulsifier and How Does it Work?...
- F Family and Home What does a newborn need?...
- F Family and Home Choosing the Right Car Seat for Your Child: Tips and Recommendations...
- F Food and Cooking How to Get Reconfirmation of Registration?...
Answers on questions: Chemistry
- H History What do Muslims consider to be the word of Allah?...
- C Chemistry Use the periodic table to complete these charts. Complete the following charts by counting the atoms in the compounds. Sodium Oxide - Na2O Type of atom: # of atoms: Total: Calcium...
- C Computers and Technology While researching a paper for history class, you become completely overwhelmed with your search in the library. you decide that instead of a general google search, you will only use...
Ответ:
The activity series is an arrangement of elements in order of reactivity.
The activity series is an arrangement of elements in order of reactivity. The activity series shows the order in which chemical elements will displace each other in a replacement reaction.
A nuclear fusion is said to have occurred when two light nuclei come together to yield a heavier nucleus with the emission of a tremendous amount of energy. Nuclear fusion occurs in the sun.
A combustion reaction refers to the reaction of a substance with oxygen. A synthesis reaction is a reaction in which two or more substances come together to form a new substance. A combustion reaction which is also a synthesis reaction is 2Fe + O2 → 2FeO.
Learn more: link?
Ответ:
Correct statements are given below:
1) In activity series elements are listed according to their reactivity.
2) Nuclear reaction in which low atomic nuclei fuse to form a heavier nucleus with the release of energy. Nuclear fusion reaction occurs in the sun.
3) C3H8 + 5O2 → 3CO2 + 4H2O is the example of a combustion reaction.
4) 2Fe + O2 → 2FeO is the example of synthesis reaction. In synthesis reaction is a type of reaction in which two reactants combine to form a single product.
Ответ: