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dybincka [34]
3 years ago
13

Three most common alkali metals include:

Chemistry
2 answers:
QveST [7]3 years ago
4 0

Answer:

Sodium, potassium, and rubidium

Explanation:

The relative abundances in the Earth’s crust are:

Na = 2.6 %; K = 2.4 %; Rb = 60 ppm; Li = 17 ppm; Cs = 3 ppm; Fr ≈ 0 ppb


Leona [35]3 years ago
3 0
Sodium, Potassium, and Cesium
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The outline of a partial periodic table is shown.
vova2212 [387]

Answer:

I think section #3

Explanation:

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4 0
3 years ago
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A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper
natali 33 [55]

Answer:

<h2>Density = 8.96 g/cm³</h2>

Explanation:

The density of a substance can be found by using the formula

Density =  \frac{mass}{volume}

From the question

mass of copper = 89.6 g

volume = 10 cm³

Substitute the values into the above formula and solve

That's

Density =  \frac{89.6}{10}

We have the final answer as

<h3>Density = 8.96 g/cm³</h3>

Hope this helps you

7 0
3 years ago
Which of the following is a balanced chemical equation?
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Answer:

equation number 3 is balanced.

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8 0
3 years ago
how many milliliters of 1.50 m hno3 contain enough nitric acid to dissolve an old copper penny with a mass of 3.94 g?
Lerok [7]
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5 0
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Define alkanes and give examples
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<span>the simplest organic molecules, consisting of only carbon and hydrogen and with only single bonds between carbon atoms.
Ex. Methane, Ethan, Propane, Butane
</span>
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3 years ago
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