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jonny [76]
3 years ago
5

How are protons and neutrons similar? How are they different?

Chemistry
1 answer:
ad-work [718]3 years ago
3 0
Protons and neutrons are in the center of the atom, making up the nucleus. The charge on the proton and electron are exactly the same size but opposite. Neutrons have no charge.
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Signs of a chemical change
dezoksy [38]

Answer: There are five signs of chemical change

  • Color Change
  • Production of an odor
  • Change of Temperature
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  • Precipitate (starts to form a solid)

When these signs start to form you know chemical change is at work.

Hope this helps :)

5 0
3 years ago
Read 2 more answers
Students are designing an experiment to test the law of conservation of mass using the following materials: 10 g baking soda, 30
GaryK [48]

Answer:

1. Students need to measure masses of the items.

2. Put baking soda and vinegar in a plastic bag and close it.

3. Mix the two, allowing for a reaction to occur.

4. Figure the mass of the plastic bag while the two components are inside.

5. The combined mass should be equal to what each weighed on their own.

Explanation:

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2 years ago
Calculate the molecular mass or formula mass in any of CH4 NO2 SO3 C6H6 Nal
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Answer:

Ch4 Is an ion so the molecule yes 5

Explanation:

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5 0
3 years ago
A 2.4L balloon filled with helium at room temperature 25oC is put into liquid nitrogen
Stels [109]

Answer:

V₂ = 0.62 L

Explanation:

Given data:

Initial volume = 2.4 L

Initial temperature = 25°C

Final temperature = -196°C

Final volume = ?

Solution:

Initial temperature = 25°C (25+273 = 298 K)

Final temperature = -196°C ( -196+273 = 77 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 2.4 L × 77 K / 298 k

V₂ = 184.8 L.K / 298 K

V₂ = 0.62 L

5 0
2 years ago
After mitosis, you have 2 cells that are the same as the parent cell. Why is it that your first cell was not the same as your pa
ladessa [460]

Answer:

During MITOSIS, the parent, diploid (2n), cell is divided to create two identical, diploid (2n), daughter cells. ... After cytokinesis, the ploidy of the daughter cells remains the same because each daughter cell contains 4 chromatids, as the parent cell did.

4 0
2 years ago
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