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Sophie [7]
3 years ago
5

How are atoms and molecules the same and how are they different?

Chemistry
1 answer:
garik1379 [7]3 years ago
3 0
<span>All the elements are listed out in a periodic table. If it's in the table, it's an element!Atoms can join together - they form bonds together - to make MOLECULES. For example, two atoms of hydrogen hook together to form a molecule of hydrogen, H2for short.</span>
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What are some similarities amongst elements within a group?
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7 0
3 years ago
The molar heat of fusion of gold is 12.550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to release
RideAnS [48]

The mass of melted gold to release the energy would be  3, 688. 8 Kg

<h3>How to determine the mass</h3>

We have quantity of energy is;

Q = n × HF

n = number of moles

HF = heat of fusion

Let's find number of moles

235.0 = n × 12.550

number of moles = \frac{235}{12. 550} = 18. 725 moles

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Number of moles = mass/ molar mass

Mass = number of moles × molar mass

Mass = 18. 725 × 197

Mass = 3, 688. 8 Kg

Thus, the mass of melted gold to release the energy would be  3, 688. 8 Kg

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6 0
1 year ago
What are the building block of lipids?
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fatty acids

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