4 years ago

A/an _______ bond allows metals to conduct electricity

1 answer:

7 0

<span>n a metallic bond, atoms of the metal are surrounded by a constantly moving "sea of electrons." This moving sea of electrons enables the metal to conduct electricity.
Answer: Metallic</span>

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3 years ago

Using today's current price of gold - $1838.80 per troy ounce, how much are 5.17x1017 atoms of gold worth? (Hint: You will have

Zepler [3.9K]

Answer:

0.010 $.

Explanation:

Hello!

In this case, since 1 troy ounce equals 31.1 grams, we can compute the price of gold per gram first:

$1,838.80\frac{\$}{try\ ounce} * \frac{1try\ ounce}{31.1g} = 59.1\frac{\$}{g}$

Now, we need to compute the grams of copper in 5.17 x10¹⁷ atoms via the Avogadro's number:

$m=5.17x10^{17}atomsAu*\frac{197.0gAu}{6.022x10^{23}atomsAu} \\\\m=1.69x10^{-4}g$

Thus, the price is:

$\$ = 59.1\frac{\$}{g}*1.69x10^{-4}g \\\\\$ =0.010\$$

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4 years ago

Water with a salinity of 20 g/L has a density of<br> _kg/m<br> 3

Nataly [62]

Answer:

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Explanation:

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3 years ago

The nucleus is incredibly dense--it contains nearly all of the mass of the atom within a tiny volume. TRUE FALSE

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