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mr Goodwill [35]
3 years ago
7

Which is an example of a compound ? sand , gold , water , iodine

Chemistry
2 answers:
OleMash [197]3 years ago
4 0
Which is an example of a compound? sand, gold, water, or iodine? well, the answer is water, water is a compound.
Licemer1 [7]3 years ago
4 0

Answer:  Water

Explanation:  Compound is a substance which is formed by the linkage of different or same kind of atoms.

It is absically composed of two or more elements.

Thus out of the given options, sand is composed of Silica (Si) , gold (Au) is the single element, Iodine (I2) is an diatomic element itself.

Water is made up of  2 moles of hydroge and one mole of oxygen. Thus it will be considered as a compound.

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Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent
irakobra [83]
The balanced equation for the reaction is as follows
2H₂ + O₂ --> 2H₂O
stoichiometry of H₂ to O₂ is 2:1
number of H₂ moles - 30.0 g / 2 g/mol = 15 mol 
number of O₂ moles - 80.0 g / 32 g/mol = 2.5 mol
limiting reactant is the reagent in which only a fraction is used up in the reaction
if H₂ is the limiting reactant 
if 2 mol of H₂ requires 1 mol of O₂
then 15 mol of H₂ requires 1/2 x 15.0 = 7.5 mol of O₂
but only 2.5 mol of O₂ is required 
this means that O₂ is the limiting reagentt and H₂ is in excess
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How does the mass of an oxygen nucleus
nataly862011 [7]

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What defining feature makes a material an insulator?
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what mass of chromium (III) sulfide is produced from the reaction of 13.2 g of sulfur with excess chromium?
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Read 2 more answers
Name:
Liono4ka [1.6K]

Answer:

1. 505g is the mass of the aluminium.

2. The answer is in the explanation

Explanation:

1. To solve this question we need to find the volume of the rectangle. With the volume and density we can find the mass of the solid:

Volume = 7.45cm*4.78cm*5.25cm

Volume = 187cm³

Mass:

187cm³ * (2.702g/cm³) = 505g is the mass of the aluminium

2. When the temperature of a liquid increases, the volume increases doing the density decreases because density is inversely proportional to volume. And works in the same way for gases because the temperature produce more collisions and the increasing in volume.

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