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Black_prince [1.1K]
3 years ago
7

The elements of a group have the same number of

Chemistry
1 answer:
kogti [31]3 years ago
8 0

Answer:

hey can you please answer my question please

Explanation:

pleaseeee

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When a substance undergoes a change
Amiraneli [1.4K]

Answer:D

Explanation:Each time state transforms into a solid matter thus a physical property is the answer.BRAINLIEST PLEASE

3 0
2 years ago
0 / 5 pts Question 3 In the reaction of aluminum with iron III oxide, if you start with 54.2 grams of aluminum, how many grams o
adelina 88 [10]
Could you please mark me as brainliest?

Answer: 160.40 g Fe2O3 are needed.

Explanation:

Balanced equation: 2 Al + Fe2O3 —> Al2O3 + 2Fe

54.2 g Al * 1 mol Al / 26.98 g Al * 1 mol Fe2O3 / 2 mol Al * 159.69 g Fe2O3 / 1 mol = 160.40 g Fe2O3 are needed.
3 0
3 years ago
Please help!!!<br> Its not chemistry is science.
laiz [17]
You would want to know everything just Incase anything happens because maybe you get lost
7 0
4 years ago
Which of the following has the most thermal energy?
wariber [46]

Answer:

Hi, There!

Thanks for choosing Brainly!

<h2>Question</h2>

Which of the following has the most thermal energy?

<h2>Answer</h2>

The entire atmosphere of the earth

Explanation:

<h2>Below is some More Information</h2>

Thermal energy is produced by the movement of molecules in an object.

  • Boiling water on a stove is an example of thermal energy

I hope I was Able to help you Understand!

Good Luck on your assignment!

5 0
3 years ago
If 5.100 g of c6h6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °c, what is the final temp
emmasim [6.3K]
  <span>C6H12 = 6x12 + 6x1 = 78. 
The equation indicates that 2x78 = 156g benzene will produce 6542kJ. 
Using proportions you can then calculate that 
x/6542kJ = 7.9g / 156g 
x = 331.3kJ = 331300J. 

heat = mass x ΔT x 4.18J/g° 
ΔT = 331300J / (5691g x 4.18J/g°) = 13.9° 

final temp = 21 + 14° = 35°C</span>
4 0
4 years ago
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