Part B: Short Answer - Answer the following questions 6. Why are the elements so important?
7. The transition metal Cobalt has an atomic number of 27 and an atomic mass of approximately 59
AMU. How many neutrons does it have? Show all your calculations for full marks.
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I need help fast 50 points

7. 32neutrons

Explanation:

mass number is equal to number of protons plus the number of neutrons

the atomic number is also known as the number of protons

therefore 59-27=32

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.