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lapo4ka [179]
3 years ago
5

Wadadaaaaddddddddddddddddddddddddddd

Chemistry
1 answer:
timama [110]3 years ago
5 0

Answer:

Huhuuhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Explanation:

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A chemist determined by measurements that 0.050 moles of aluminum participated in a chemical reaction. Calculate the mass of alu
Law Incorporation [45]

Answer:

13.5 g

Explanation:

This question is solved easily if we remember that the number of moles is obtained by dividing the mass into the atomic weight or molar mass depending if we are referring to elements or molecules.

Therefore, the mass of aluminum in the reaction will the 0.050 mol Al times the atomic weight of aluminum.

number of moles = n = mass of Al / Atomic Weight Al

⇒ mass Al = n x Atomic Weight Al = 0.050 mol x 27 g mol⁻¹

                                                         = 13.5 g

We have three significant figures in 0.050 and therefore we should have three significant figures in our answer.

           

8 0
3 years ago
Which of the following would not be considered an observation in terms of the scientific method?
prohojiy [21]

Answer:

the first option, tasting a pasta sauce after adding a new ingredient.

Explanation:

tasting a pasta sauce after adding a new ingredient is not an observation because there is no qualitative or quantitative data to be taken from that experience.

4 0
3 years ago
Which of these substances is an example of a solution?
strojnjashka [21]

The solution is concrete

7 0
3 years ago
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Which number is different for isotopes of the same element?
tankabanditka [31]

Answer:

D number of protons or atomic mass

4 0
2 years ago
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Which of these contains information about the elements
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Post the question so we can help
7 0
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