1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ANEK [815]
3 years ago
11

5

Chemistry
1 answer:
andriy [413]3 years ago
5 0

Answer:

reaction 1 and reaction 4 both are decomposition reactions

while reaction 2 is double displacement reaction and reaction 3 and 5 are combination reactions

You might be interested in
Write word equations for the reactions of a) magnesium with chlorine b) potassium with oxygen c) sodium with bromine d) carbon w
IRINA_888 [86]
A) Magnesium + Chlorine -> Magnesium chloride ( Mg + Cl2 -> MgCl2)

b) Potassium + Oxygen -> Potassium oxide
( 2K + O2 -> K2O )

c) Sodium + Bromine -> Sodium bromide
( 2Na + Br2 -> 2NaBr)

d) Carbon + Oxygen -> Carbon dioxide
( C + O2 -> CO2 ) This reaction occurs when heated.

4 0
2 years ago
Can someone helps me
Lorico [155]

Answer:

Letter C is the correct one

6 0
3 years ago
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (
ziro4ka [17]

Answer: with a non metallic atom

Explanation:

3 0
3 years ago
Carbon 14 is an example of blank dating
Brilliant_brown [7]

Answer:

Carbon

Explanation:

It's in the name lol

6 0
3 years ago
Determine the full electron configurations:<br><br> 1. K+ (Z=19)<br><br> 2. Zn2+ (Z=30)
mixas84 [53]

Answer:

1=  K⁺= (Z=19) = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰

2 = Zn²⁺= (Z = 30) =1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰, 3d¹⁰

Explanation:

When an atom lose or gain the electron ions are formed. There are two types of ions cation and anion.

Cation are formed when atom lose the electron.

Anion are formed when an atom gain the electron.

In given question potassium loses its valance electron and form K⁺ cation. Thus its electronic configuration will be written as,

₁₉K⁺ = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰

While the electronic configuration of potassium in neutral form is:

₁₉K = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹

The atomic number of zinc is 30 and its electronic configuration is:

₃₀Zn= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s², 3d¹⁰

When zinc atom loses its 2 valance electrons the electron configuration will be,

₃₀Zn²⁺= 1s² 2s² 2p⁶ 3s² 3p⁶ 4s⁰, 3d¹⁰

7 0
3 years ago
Other questions:
  • Find the temperature at which ethanol boils on a day in the mountains
    5·1 answer
  • HELP ME PLEASE 40 POINTS You may select a topic from the list below, or choose your own.
    9·1 answer
  • What is the formula for percent yield
    14·1 answer
  • Write a nuclear reaction for the neutron-induced fission of u−235 to form xe−144 and sr−90.
    7·1 answer
  • Which of the following is the correct formula for sulfuric acld?
    7·1 answer
  • Consider dissolving sugar in water and magnesium sulfate in water. is any new substance being produced? what happens after sodiu
    7·1 answer
  • SOMEBODY PLEASE HELP.. I DONT UNDERSTAND
    6·1 answer
  • What happens in a voltaic cell?
    8·1 answer
  • What can be inferred from the graph?
    7·1 answer
  • In this experiment the crest of one wave combined with the crest of the second wave to produce _______________.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!