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gregori [183]
3 years ago
7

An atom with 2 protons and 4 neutrons is called?

Chemistry
2 answers:
Ludmilka [50]3 years ago
3 0

Answer:

Its nucleus

Explanation:

also contains two neutrons. Since 2 + 2 = 4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons since the number of electrons must equal the number of protons.

Nesterboy [21]3 years ago
3 0

Answer: Its nucleus also contains two neutrons. Since 2 + 2 = 4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons since the number of electrons must equal the number of protons.

Explanation:

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The energy of the universe is constant. That what mentioned by the first law of thermodynamics,
Goryan [66]

Answer:

No, ΔE does not always equal zero because it refers to the systems internal energy, which is affected by heat and work

Explanation:

According to the first law of thermodynamics, energy is neither created nor destroyed. This implies that the total energy of a system is always a constant.

So, according to the first law of thermodynamics we have that ΔE = q + w. This means that the value of  ΔE depends on q (heat) and  w(work). Hence ΔE is not always zero since it depends on the respective values of q and w.

5 0
3 years ago
Based on the diagram below, how much of the excess reactant is left over? *
pantera1 [17]

Answer:

3 pieces of lunch-meat and 2 slices of cheese

Explanation:

You have enough bread to make 3 sandwiches

You have enough lunch-meat to make 4 sandwiches

You have enough cheese to make 5 sandwiches

In all you have enough material to make 3 sandwiches

so if you subtract three from each number above you will have no bread, enough lunch-meat to make one sandwich and enough cheese to make two sandwiches

luch-meat for one sandwich is: 3 pieces

Cheese for two sandwiches is:  2 pieces

5 0
3 years ago
2. When the child is pushed in the toy car, he increases speed. Does he accelerate as he is being pushed?
Otrada [13]
Yes. Look up Newton’s laws of physics. That should help
7 0
3 years ago
Read 2 more answers
For each of the following redox reactions in the, identify the oxidizing agent and the reducing agent.
NARA [144]
Anywhere between 5sogt2 and 776sogt2
5 0
3 years ago
Which contains more carbon 4.71 g of C6H12O6 or 5.85 g C2H6O?
maksim [4K]

Answer:

5.85 g C2H6O has more carbon

Explanation:

Weight of carbon in  4.71 g of C6H12O6

4.71 * 12.01\\56.5671\\ grams

Weight of carbon in  5.85 g of C2H6O

5.85 * 12.01\\70.259\\ grams

Hence, 5.85 g C2H6O has more carbon

8 0
3 years ago
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