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Travka [436]
3 years ago
13

The density of gold is 19.3 g/cm3. What is the volume of a 13 g gold nugget?

Chemistry
1 answer:
Bezzdna [24]3 years ago
8 0
Density = mass / volume
19.3 = 13 / m
m = 13 / 19.3
m = 0.67g

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How many protons are in an atom of strontium?
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Answer:

38

Explanation:

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2 points
erica [24]

9 grams of hydrogen gas (H2) will SC  Johnson need to react in order to make 1 bottle of Windex.

Explanation:

Balance equation for the formation of ammonia from H2 gas.

N2 + 3H2 ⇒ 2 NH_{3}

Given

mass of ammonia in 1 bottle of windex = 51 gram

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number of moles = \frac{mass}{atomic mass of 1 mole}

number of moles = \frac{51}{17.01}

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in 1 bottle of windex there are 3 moles of ammonia 0r 51 grams of ammonia.

From the equation it can be found that:

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\frac{2}{3} = \frac{3}{x}

x = 4.5 moles of hydrogen will be required.

to convert moles into gram formula used:

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7 0
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In the periodic table we use today, the elements are arranged by increasing mass. True or false
guapka [62]

99% sure its false

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