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valkas [14]
3 years ago
9

PLZZ HELP ME ASAP

Chemistry
2 answers:
Amiraneli [1.4K]3 years ago
5 0
The answer is A according to my teacher
galben [10]3 years ago
3 0
I think it is yes, the reaction may require an activation energy

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What is the name of a compound having the formula Al2O3? (5 points)
Andrew [12]

Answer:

4) Aluminum Oxide

Explanation:

4 0
2 years ago
Read 2 more answers
Chemistry help!!
Scrat [10]

The student originally has 252 grams of water in this experiment.

LAW OF CONSERVATION OF MASS:

  • The law of conservation of mass explains that matter (mass) can neither be created nor destroyed but can be changed from one form to another.

  • This means that in a chemical reaction, the sum of the masses of the reactants must equate to the total mass of product(s).

  • According to this question, a student conducts an experiment to separate water into hydrogen and oxygen. The student collects 28.0 g of hydrogen and 224.0 g of oxygen.

  • Since hydrogen and oxygen are the constituent elements of water, the sum of their masses must equate the mass of water.

  • Therefore, 224g of oxygen + 28g of hydrogen = 252g of water.

Learn more at: brainly.com/question/24996173?referrer=searchResults

8 0
2 years ago
One hundred students were surveyed about who they would vote for. What is
GuDViN [60]
Hey hope this helps ⬇️
6 0
3 years ago
Convert 18.9 moles to MgCl2 to formula units
Masja [62]

Answer:

18.9 moles of MgCl2 = 17.834 kg of MgCl2

Explanation:

The molecular weight of MgCl is 80.0 g/mol . So, to convert the given mole amount to grams, multiply this by this number, which is constant for all compounds with a specific composition (mass fraction).

Considering the original question was in the context of chemistry, I wanted to make it seem formal and more educational too. Hopefully that worked!  

EDIT: Came up with some text around what happens inside cells that would have made it better if someone just had an issue converting units, but I doubt my answer will be accepted >.<

3 0
2 years ago
A salt is best described as a compound that is formed from the reaction between
Basile [38]
An acid and a base
For example
Sodium Hydroxide+Hydrochloric acid———Sodium chloride +Water
3 0
3 years ago
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