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Sladkaya [172]
3 years ago
6

Certain metals react with acids to form hydrogen and salts of that metal. When sulfuric acid and aluminum combine, hydrogen gas

and aluminum sulfate form. How many grams of sulfuric acid will need to fall on aluminum to consume 140.11 milligrams of aluminum?
Chemistry
1 answer:
Tasya [4]3 years ago
6 0

Answer: 7.622g of sulphuric acid

Explanation:

3H2SO4 + 2Al -> Al2(SO4)3 + 3H2

3 moles of H2SO4 needs 2 moles of Al

(3 x 98)g of H2SO4 needs (2 x 27)g of Al

294g of H2SO4 needs 54g of Al

29400mg of H2SO4 needs 5400mg of Al

1mg of Al = 294/54 = 5.44mg of Al

140.11mg of Al = 140.11 x 5.44

                       = 762.2mg  = 762.2/100 = 7.622gof sulphuric acid

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The environment where rich,fertile soil would most likely be is a flood plain.

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7 0
3 years ago
according to the balanced chemical equation below,how many grams of h20 are produced if 3.98g of co2 were produced. 2C18H18 + 25
telo118 [61]

Answer:

Primero debes usar los gramos de co2 y luego buscar su peso molecular, luego de eso usar la relación de moles entre CO2 y H2O y por último buscar el pm del H2O pata ver cuantos gramos de produce.

Explanation:

3 0
3 years ago
Copper metal (Cu) reacts with silver nitrate (AgNO3) in aqueous solution to form Ag and Cu(NO3)2. The balanced chemical equation
Rufina [12.5K]

The mass formed in a chemical reaction is given by stoichiometry law in balanced chemical equation. The mass of silver produced in the reaction is 107. 9 g.

<h3>What is the stoichiometric law?</h3>

The stoichiometric law states that in a balanced chemical equation, the stoichiometric coefficient describes the moles of each compound in a chemical reaction.

The balanced chemical equation for the reaction is:

\rm Cu\;+\;2\;AgNO_3\;\rightarrow\;Cu(NO_3)_2\;+\;2\;Ag

From the balanced chemical equation, 1 moles of copper results in 2 moles of silver.

Moles in terms of mass can be given as:

\rm Moles=\dfrac{Mass}{Molar\;mass}

Thus, moles of 31. 75 grams copper is:

\rm Cu=\dfrac{ 31. 75 }{63.5}\;mol\\ Cu=0.5 mol

The moles of Ag produced can be given from stoichiometric law as:

\rm 1\;mol\;Cu=2\;mol\;Ag\\0.5 \;mol\;Cu=0.5\;\times\;2\;mol\;Ag\\0.5\;mol\;Cu=1\;mol\;Ag

The moles of Ag produced is 1 mol.

The mass of a mole of element is equivalent to the molar mass. Thus, the mass of Ag produced in the reaction is 107. 9 g. Hence, option B is correct.

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7 0
2 years ago
When an electr ic cur rent is passed through water , two colou r less gases are produced. When hydrogen gas makes a po pping sou
kumpel [21]

The lysis reaction with the formation of two different gases, and the synthesis reaction with the reaction of hydrogen and oxygen support that water is a compound and not an element.

<h3>What is electrolysis?</h3>

The electrolysis is the analytical process for the separation or the deposition of the element in the presence of the electric field.

The passing of electric current through water results in the release of two types of gases. Thus, it can be said that water lysis or breakdown forms the release of two elements hydrogen and oxygen supporting the fact that water is a compound and not an element.

The production of water is found to be formed with the reaction of hydrogen with oxygen. Thus it supports that water is a compound and, not an element.

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5 0
2 years ago
If ms2 is 40.06% sulfur by mass, what is the identity of the metal m?
musickatia [10]

Answer:

The mass percent refers to the mass of an element in a compound. It is one of the ways of expressing concentration. The mass percent of the solution provides the percentage of the amount of solute present in grams of solution.

The mass percentage of S=40.06 % and the molar mass of S= 32. By applying the formula of mass percent,we can calculate the molar mass of M.

The molar mass of M=159.76-64=95.76

We know that the element of molybdenum has molar mass of 96. Therefore, the element M is <u>Molybdenum.</u>

4 0
3 years ago
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