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kykrilka [37]
3 years ago
12

How do the alkali metals differ from the alkaline earth metals?

Chemistry
1 answer:
Alik [6]3 years ago
7 0

Answer & Explanation:

  • The alkali metals are the elements found in the first group of the periodic table.
  • Alkaline earth metals are found in the second group of the periodic table.
  • Alkali metals are Lithium (Li), sodium(Na), potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr).
  • Alkaline earth metals include; Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba) and Radium (Ra).
  • Alkali metals are very reactive and none of these metals do not occur as free metals in nature.
  • Alkaline metals are also do not occur freely in nature and they are also very reactive.
  • For alkali elements, the densities of Lithium and Sodium are less than the density of water. However, the other elements are denser than water. Many of alkali metal compounds (NaCl, KCl, Na2, CO3, NaOH) are commercially very important.
  • Alkaline elements in this group are denser than water.
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4 0
3 years ago
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A 41.1 g sample of solid CO2 (dry ice) is added to a container at a temperature of 100 K with a volume of 3.4 L. If the containe
Morgarella [4.7K]

Answer:

The pressure inside the container is 6.7 atm

Explanation:

We have the ideal gas equation: P x V = n x R x T

whereas, P (pressure, atm), V (volume, L), n (mole, mol), R (ideal gas constant, 0.082), T (temperature, Kelvin)

Since the container is evacuated and then sealed, the volume of the body of gas is the volume of the container.

So we can calculate the pressure by

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where as,

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Hence P = 0.934 x 0.082 x 298 / 3.4 L = 6.7 atm

3 0
3 years ago
What is the mass in grams of 0.7350 moles of sodium?
Alik [6]

Answer:

Explanation:

1 mol of sodium = 23 grams (use the number on your periodic table).

0.7350 mol sodium = x

Cross multiply

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Water vapor is not usually seen.
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Answer:

True

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Water vapor is totally invisible.

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Helped by the <u><em>One</em></u> & <u><em>Only</em></u> <u><em>#QUEEN</em></u> aka <u><em>#DRIPPQUEENMO </em></u>

<u><em>Hoped this helped! :)</em></u>

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6.02 Ionic and covalent bonds.
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