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Yanka [14]
1 year ago
6

Please Help! The thing is in the photo.

Physics
1 answer:
ivolga24 [154]1 year ago
5 0

The reaction 4Al + 3O₂ → 2Al₂O₃ is a synthesis or also called combination reaction because reactants combine to produce a new compound (Option 2).

<h3>What is a synthesis combination reaction?</h3>

In chemistry, a synthesis or combination reaction is any type of chemical reaction in which two or more molecules called reactants combine to produce one or more molecules called products of such reaction.

Therefore, with this data, we can see that a synthesis or combination reaction is a chemical process where two or more molecules combine to produce a new molecule known as a product.

Learn more about synthesis combination reactions here:

brainly.com/question/14703806

#SPJ1

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A dairy farmer notices that a circular water trough near the barn has become rusty and now has a hole near the base. The hole is
Crazy boy [7]

Answer:

v=1.93m/s

Explanation:

From the concept of fluids mechanics we know that if a tank has a hole at the bottom, the equation that we need to use is:

v=\sqrt{2gh}

Since we know gravity and its hight

v=\sqrt{2*(9.81m/s^{2})(0.19m) }=1.93m/s

5 0
3 years ago
Isotopes of an element differ in their number of ?
Lera25 [3.4K]

neutrons

Explanation:

Isotopes of an element differ in their number of neutrons.

Isotopy is the existence of two or more atoms of the same element having the same atomic number but different mass numbers due to the differences in the  number of neutrons in their nucleus.

  • Isotopes of an element have the same electronic configuration.
  • They have the same chemical properties but differ in their masses.
  • The mass of an atom is function of the protons and neutrons.

Learn more:

Isotope brainly.com/question/2593342

#learnwithBrainly

4 0
3 years ago
In the rocket, what is the equal and opposite reaction?
netineya [11]

Answer:

see below

Explanation:

Gases flying out at high velocity out the back  

  rocket flying forward

7 0
2 years ago
Please help!!A camera lens 13.3 cm from a
kumpel [21]

Answer:

f=1.92 cm

If ans is correct reply for explanation.

7 0
3 years ago
Do atoms have mass ?
MArishka [77]
There are not enough electrons in atoms to affect the total mass, so the total mass is just the weight of the protons and neutrons. 
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