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valkas [14]
2 years ago
7

B) Sodium + Oxygen Sodium Oxide + Type of Reaction :

Chemistry
1 answer:
dlinn [17]2 years ago
3 0

Answer:

b. combustion reaction

c. displacement reaction

e. Decomposition reaction

f. redox reactions

g. combination reaction

I'm not fully sure about part c but the rest are correct

I hope it helped

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What is the most accurate sight for a firearm?
Bess [88]

Answer:

a magnifying scope

Explanation: you get a close up view of the target and because of that there is a lower margin of error

8 0
3 years ago
If an electromagnetic wave has a frequency of 4.5 x 10^18 Hz, what is its wavelength? The speed of light is 3 x 108 m/s.
Mekhanik [1.2K]

Answer:

Wavelength, λ  = 6.7 x 10^-11 m

Explanation:

Frequency and wavelength are inversely proportional to each other.

In this problem;

f =  4.5 x 10^18 Hz

wavelength, λ = ?

Speed of light, c = 3 x 108 m/s.

These variables are related by the following equation;

c = λ * f

Making λ subject of focus, we have;

λ = c / f

λ = 3 x 10^8 / 4.5 x 10^18

λ  = 0.67 x 10^-10

λ  = 6.7 x 10^-11 m

3 0
3 years ago
Please help me with this homework I really need help with this homework
Rainbow [258]

Answer:

For the first question its C, Gas

For the second one table

Explanation:

The faster particles move, the more kinetic energy they have. Within a given substance, such as water, particles in the solid state have the least amount of kinetic energy. Particles in the liquid state move faster than particles in the solid state. Therefore, they have more kinetic energy.

3 0
3 years ago
Hydrogen fuel cells are a promising alternative to gasoline engines in part because they release water instead of carbon dioxide
enot [183]

Answer:

The correct answer is option (B) Two molecules of H2 and a molecule of O2 must collide at one time

Explanation:

2H2(g) + O2(g) → 2 H2O(g)

   2             1            2

Considering the given reaction, for water molecule to be form, two molecules of hydrogen and one molecule of oxygen must collide at the same time. The product obtained from the collision is two molecules of water as steam. 2 H2O(g)

6 0
3 years ago
Read 2 more answers
Metamorphism can best be defined as
Brilliant_brown [7]

Answer:

The answer is D if it's wrong let me know pls

5 0
3 years ago
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