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
valentina_108 [34]
3 years ago
7

For questions 18-21, . In each space, classify the reaction type.

Physics
2 answers:
Sergeu [11.5K]3 years ago
4 0

Answer:

2LiBr+Pb(NO_3) = PbBr_2+ 2LiNO_3  is a double displacement reaction

  • Fe+2HCl  = FeCl_2+2H_2 is a redox reaction
  • CaO+H_2 O = Ca(OH)_ 2is a combination reaction
  • NiCl_2 = Ni+Cl_2  is a decomposition reaction

Explanation:

2LiBr+PbNO_3 = PbBr_2+2LiNO_3

                                                       It is of the form AX+BY = AY+BX

                                                       Fe+2HCl = FeCl_2+H_2

Both oxidation and reduction occur in this reaction. Fe gets oxidized and H gets reduced.

                                          Fe = Fe^(2+)+2e^-

                                          2H^++2e^- = H_2

                                          CaO+H_2 O = Ca(OH)_2

It is an exothermic combination reaction. Calcium reacts with water to produce calcium hydroxide and heat is released in this process.

  • NiCl_2 = Ni+Cl_2

It is a decomposition reaction where nickel chloride decomposes to nickel and chlorine.

igomit [66]3 years ago
4 0

Answer:

18. <u>Double Displacement Reaction</u>

19. <u>Single Displacement Reaction</u>

20. <u>Synthesis Reaction </u>

21. <u>Decomposition Reaction</u>

Explanation:

Double Displacement formula:

<em>AB + CD --> AD + CB</em>

Single Displacement formula:

<em>A + BC --> AC + B</em>

Synthesis formula:

<em>A + B --> AB</em>

Decomposition formula:

<em>AB --> A + B</em>

You might be interested in
When a charge of 10 C flows past any point along a circuit in 5 seconds, the current at that point would be _______ A.
aleksandrvk [35]

Answer:

2 amps

Explanation:

I=Q/t

I=10/5

I=2 Amps

4 0
4 years ago
An object is dropped from a platform100 ft high. Ignoring wind resistance, what will its speed be when it reaches the ground?
sweet-ann [11.9K]

Answer:

80 ft/s

Explanation:

Given:

Δy = 100 ft

v₀ = 0 ft/s

a = 32.2 ft/s²

Find: v

v² = v₀² + 2aΔx

v² = (0 ft/s)² + 2 (32.2 ft/s²) (100 ft)

v = 80.2 ft/s

Rounded, the speed when it reaches the ground is 80 ft/s.

4 0
3 years ago
If you drive at a speed of 63.2 miles/hour for 7.5 hours, how far will you go
Rasek [7]

Answer:

474 miles

Explanation:

63.2 x 7.5 = 474

4 0
3 years ago
What is a neutral atom?
12345 [234]
An atom in which is the number of electrons that surrounds the nucleus
4 0
3 years ago
Read 2 more answers
the imagine above shows to opposite forces acting on a rolling cart, what can we say is true about affect of the forces on the c
cluponka [151]

Answer:

Here is my answer...

Explanation:

The cart will connect with the opposite force, and then the cart will come to a shuddering stop before moving in the direction of the oposite force.

Hope I helped! :)

7 0
3 years ago
Other questions:
  • A 0.600-mm diameter wire stretches 0.500% of its length when it is stretched with a tension of 20.0 n. what is the young's modul
    9·1 answer
  • A tiger runs one kilometer. The tiger does 15,000 J of work and has a total power output of 500 W. How many minutes does it take
    14·1 answer
  • How can health literacy help people become more productive?
    11·2 answers
  • During a camping trip, Sierra collected dry branches and broke them into smaller pieces. She then placed the sticks in a fire pi
    9·1 answer
  • . While a person lifts a book of mass 2 kg from the floor to a tabletop, 1.5 m above the floor, how much work does the the perso
    14·2 answers
  • when you catch a baseball ,what kind of work do you do ,negative or positive ? by catching the ball , what do you change ? what
    13·1 answer
  • The angular position of objects as a function of time is given, where a, b, and care constants. In which of these cases is the a
    6·1 answer
  • What is the length of the x-component of the vector shown below?<br> у<br> 6<br> 28°
    6·1 answer
  • Using your Periodic Table, which of the following elements below has the largest atomic radius? A.) Aluminum B.) Sodium C.) Sulf
    14·2 answers
  • Which is the answer
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!