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Ann [662]
2 years ago
5

H2O

Chemistry
2 answers:
Anna71 [15]2 years ago
8 0

Answer:

the answer is  A; atom

Explanation:

hope this helps you

erma4kov [3.2K]2 years ago
3 0
B) Compound, H and O are elements, when two elements bond together they become a compound
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Someone help please , I’ll give brain . Question 10 !
Rudik [331]

Answer:it’s c

Explanation:

I just know it is

4 0
3 years ago
Use the data in the table above to calculate an approximate ΔH∘ in kilojoules for the synthesis of hydrazine from ammonia:
ankoles [38]
DeltaH formation = deltaH of broken bonds - deltaH of formed bonds

Broken bonds: tiple bond N-N and H-H bond
Formed bonds: N-H and N-N bonds

You also have to take note of the molar coefficients

deltaH formation = <span> [(N≡N) + 2 * (H-H)] - [4 * (N-H) + (N-N)] 
                           = (945 + 2*436) - (4*390 + 240)
                            = 17 kJ/mol

The answer is 17 kJ/mol.</span>
8 0
3 years ago
The figure below demonstrates what happens to white light when it passes through a prism. Which colors of lights has the highest
Yuri [45]

Answer:

Blues

Explanation:

Colors of Rainbow => ROYGBIV

Red    Orange   Yellow   Green   Blue   Indigo   Violet

low energy  => => => => => => => => => => high energy

low frequency => => => => => => => => =>  high frequency

long wavelengths => => => => => => => => short wavelengths

Note: All L's on the Left => low, low, long; other end are opposites.

7 0
2 years ago
The amount of energy required to heat water for a 10-minute shower (50 gallons) is 2.2125 kJ. How many calories is this?
Zigmanuir [339]
From the problem statement, this is a conversion problem. We are asked to convert from units of kilojoules to units of calories. To do this, we need a conversion factor which would relate the different units involved. We either multiply or divide this certain value to the original measurement depending on what is asked. From literature, we will find that 1 kilojoule is equal to 239 calories. We do as follows:
<span>
2.2125 kJ ( 239 calories / 1 kJ ) = 528.79 calories
</span><span>
</span>
6 0
3 years ago
Give 2 examples of force pairs that occur when you clean your room?
KATRIN_1 [288]
On eof the forces is inertia. This can happen when you move your furniture to clean under them. When you move an object in a straight line without chanign its composition (e.g moving a chair or a table from one side to the other) you are working with inertia. The secon force is friction. It s present when you clean a surface by rubbing it with a tool like a damp cloth or a mop. 
4 0
3 years ago
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