a. True
b. False
Answer:
The correct option is B) false.
Explanation:
Absolute zero is the point where it is not feasible to cool further.
The lowest possible temperature is 0 kelvin which is also known as absolute zero. In degrees its corresponds to –273.15 degrees Celsius.
it is not possible to reach or cool a substance to absolute zero although nearby temperatures can be reached.
Consider the provided statement.
Researchers have now been able to cool substances to absolute zero is a false statement.
The correct option is B) false.
The number of mole ofproduced is.
Further explanation:
A balanced chemical reaction is a chemical reaction that has equal number of atoms of the different elements in the reactant as well as on the product side. The chemical equation is required to be balanced to follow the Law of the conservation of mass.
Stoichiometry of a reaction is used to determine the number of species present in the reaction by the relationship between the reactants and products. It can be used to determine the moles of a compound when the moles of another compound in the reaction are given.
The general reaction is as follows:
Here,
A and B are reactants.
C is the product.
One mole of Aand two moles of B react to form three moles of C. The stoichiometric ratio between A and B is 1:2, between A and C is 1:3 and between B and C is 2:3.
The given chemical reaction is as follows:
According to the stoichiometry of the above-balanced chemical reaction, 2 moles of Al react with 3 moles of FeO to produce 3 moles of Fe and 1 mole of .
Therefore, the ratio of the moles of Fe and will be 3:1.
The formula to determine the number of moles ofis written as follows:
…… (1)
Substitute 0.60 mol for number of moles of Fe in equation (1).
Hence, 0.20 mol of is produced when 0.60 mol of Fe is produced in the reaction.
Learn more:
1. Write the equation to show how cation acts as an acid brainly.com/question/2396649.
2. Which are the characteristics of mixtures brainly.com/question/1917079?
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Solutions
Keywords: Balanced chemical reaction, stoichiometry, reactants, products, number of moles, Fe, Al2O3, FeO and Al.
B) what mass of iron(lll) oxide, Fe2O3, must be consumed to prepare 2.50g of iron metal
Between the oxygen atom and the metal ion, the oxide is created. The first group of the periodic table contains a metal called X.
Periodic table is defined as a method of showing elements in a table where similar-property elements are grouped or displayed in the same vertical column. It is frequently recognized as a symbol of chemistry and is used extensively in physics, chemistry, and other sciences. It is a visual representation of the periodic law, which claims that the atomic numbers of chemical elements have a roughly periodic relationship with their attributes.
The element X is a member of the 15th group and third period. There will therefore be three shells in the atom, and its valence shell will contain five electrons. The electronic setup will therefore be 2, 8, 5. In addition, X's atomic number is 15 (2 + 8 + 5).
Thus, between the oxygen atom and the metal ion, the oxide is created. The first group of the periodic table contains a metal called X.
To learn more about periodic table, refer to the link below:
#SPJ2
(1) An atom is electrically neutral.
(2) An atom is mostly empty space.
(3) The nucleus of an atom is negatively
charged.
(4) The electrons in an atom are located in
specific shells.
Answer;
-(2) An atom is mostly empty space.
Experiment
-Rutherford conducted the "gold foil" experiment where he shot alpha particles at a thin sheet of gold. The conclusion that can be drawn from these experiment is that an atom is mostly empty space.
-Rutherford found that a small percentage of the particles were deflected, while a majority passed through the sheet. This caused Rutherford to conclude that the mass of an atom was concentrated at its center, as the tiny, dense nucleus was causing the deflections.
Answer;
(2) An atom is mostly empty space.
Experiment
-Rutherford conducted the "gold foil" experiment where he shot alpha particles at a thin sheet of gold. The conclusion that can be drawn from these experiment is that an atom is mostly empty space.
-Rutherford found that a small percentage of the particles were deflected, while a majority passed through the sheet. This caused Rutherford to conclude that the mass of an atom was concentrated at its center, as the tiny, dense nucleus was causing the deflections.