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WINSTONCH [101]
3 years ago
13

Professional scientific "magazines" in which scientists write

Chemistry
1 answer:
aniked [119]3 years ago
5 0
I’m sorry but I don’t understand your question do you have the worksheet?
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Copper has average atomic mass of 63.546 amu. It's two isotopes are Cu-63 (which is 69.17% abundant and has a mass of 62.9296 am
garri49 [273]

Answer: 69.152% → 63^Cu

30.848% → 65^Cu

Explanation:

As you know, the average atomic mass of an element is determined by taking the weighted average of the atomic masses of its naturally occurring isotopes.

Simply put, an element's naturally occurring isotopes will contribute to the average atomic mass of the element proportionally to their abundance.

Explanation:

6 0
3 years ago
Which of the following is an example of an Arrhenius base? Select one: A. HNO3(aq) B. H3PO4(aq) C. H2CO3(aq) D. H2O(l) E. none o
Vesnalui [34]

Answer:

The correct choice is e. Two of the above.

Explanation:

4 0
1 year ago
Which element is larger lithium or bromine
Lera25 [3.4K]
Lithium i think!!
hope this helps
5 0
2 years ago
-, How many food Calories (Kcal) are in 3500 joules
prohojiy [21]

Answer:

The calorie is commonly used in the field of chemistry, and in many countries it is commonly used as a unit of food energy. There are two defined for the calorie, gram calorie (approximately equals 4.2 joules) and kilogram calorie (approximately equals 4.2 kilojoules).

Explanation:

6 0
3 years ago
Read 2 more answers
Is the tetrapeptide ala-glu-gly-lys a good buffer at ph 7.0? will it move in an electric field at ph 7.0?
patriot [66]
<span> pH is a measure of the effective concentration of </span><span>H+</span> ions a solution. So, <span>an electric field applied to a solution will create a pH gradient.

If pH is 7, means it is neutral. so it will not move in an electric field</span>
3 0
3 years ago
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