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dolphi86 [110]
3 years ago
5

HELP! ASAP!!! WILL MARK BRAINLIEST!!

Chemistry
2 answers:
san4es73 [151]3 years ago
8 0

Answer:

Rb

Alkali Metals are Group 1 so

Rb it isnt Hydrogen because it is a gas

Explanation:

mojhsa [17]3 years ago
6 0
Rubidium is the chemical element with the symbol Rb and atomic number 37. Rubidium is a very soft, silvery-white metal in the alkali metal group. Rubidium metal shares similarities to potassium metal and caesium metal in physical appearance, softness and conductivity. Rubidium cannot be stored under atmospheric oxygen, as a highly exothermic reaction will ensue, sometimes even resulting in the metal catching fire.
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Juliette [100K]
<span>Total mass = 2.75g Mass % of Mg = 1.0g x 100/2.75g = 36.36 % Mass % of O = 1.75g x 100/2.75g = 63.64 % Mol of Mg = 36.36/24 = 1.515 Mol of O = 63.64/16 = 3.977 Ratio of Mol of Mg and O in the substance = (1.515 : 3.977) x 2 = 3 : 8 The empirical formula of substance is Mg3O8</span>
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adell [148]

Answer:

A Cellulose not digested by humans.

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Explanation:

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2 years ago
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Andrei [34K]

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0.432 drinks are toxic

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<h3>0.432 drinks are toxic</h3>
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