The answer would be 0.0861 moles
Final answer:
To find the moles of aluminum chloride from a given mass, you must use its molar mass. With a mass of 105.8 g and a molar mass of 133.33 g/mol, you get 0.794 moles of aluminum chloride. Additional information is needed to directly involve barium chloride in the calculation.
Explanation:
To determine how many moles of barium chloride are needed to produce 105.8 g of aluminum chloride, we'll need to consider the stoichiometry of the reaction. However, based on the information provided, there seems to be a possible error as barium chloride does not directly react to form aluminum chloride in a simple exchange reaction. Instead, we'll determine the moles of aluminum chloride (AlCl3) from its mass and molar mass.
First, calculate the molar mass of AlCl3:
Al: 26.98 g/mol
Cl: 35.45 g/mol × 3 = 106.35 g/mol
The molar mass of AlCl3: 26.98 g/mol + 106.35 g/mol = 133.33 g/mol.
Now use this to find the moles of AlCl3:
(105.8 g AlCl3) / (133.33 g/mol) = 0.794 moles of AlCl3.
Assuming a typical synthesis reaction where aluminum reacts with chlorine, the stoichiometry would be 2 Al + 3 Cl2 → 2 AlCl3. For every 2 moles of AlCl3 produced, you would need 2 moles of Al and 3 moles of Cl2. Any additional information such as the reaction involving barium chloride would be needed to provide a more specific answer involving barium chloride.
What does the map show about the Earth 225 million years ago ?
About 225 million years ago, the earth contained a single landmass; called Pangaea. That landmass was divided into two landmasses, viz. Laurasia and Gondwana Land; about 200 million years ago. ... The Gonwana Land included the modern day India, Australia, South America, South America and Antarctica.
Answer:
It shows Pangaea.
Explanation:
The map about the Earth 225 million years ago shows the supercontinent Pangaea, in which present-day continents were located close to each other. At that time, plants and animals were moved freely over all of the continents. Pangaea was centred on the Equator and surrounded by the superocean Panthalassa.
balanced forces cannot accelerate an object
True
False
True Balance forces can not change the motion or direction of an object.
Question : Balanced forces cannot accelerate an object true or false?
It would be true based on the change of the motion cannot change the motion as well as the direction of the object that is for the balanced forces.
Hopefully this helps you ! have a good evening !
If heat is released from water vapor, what phase change occurs? A) liquid to gas B) solid to gas C) liquid to solid D) gas to liquid
D) Gas to liquid. Vapor would be a gas, and in the process of releasing heat, it turns back into a liquid.
ANSWER: D: GAS TO LIQUID
EXPLANATION: Water vapor is already in a gas form because it is vapor. Anytime heat is released from a gas, it will change forms to be a liquid. It is like reverse condensation.
What is the wavelength of radio waves? A. between 1 x 10-3 and 1 x 10-1 meters B. less than 1 x 10-11 meters C. more than 1 x 10-1 meters D. between 1 x 10-8 - 4 x 10-7 meters E. between 4 x 10-7 - 7 x 10-7 meters
Answer:
The correct answer option is C. more than 1 x 10-1 meters.
Explanation:
A wavelength is the distance between the successive crests of a wave.
A type of electromagnetic (EM) radiation is called radio waves which have wavelengths that are longer than infrared light in the electromagnetic spectrum.
The wavelength of the radio waves is approximately more than 1 x 10-1 meters.
Therefore, the correct answer option is C. more than 1 x 10-1 meters.
Answer:
More than 1 × 10⁻¹ meters
Explanation:
Wavelength is defined as the distance between the successive crests and the successive trough of a wave.
Radio waves are the type of electromagnetic radiation that have longest wavelength in the electromagnetic spectrum. This wave travel with the speed of light. The wavelength of radio waves is 10³ meters.
So, the wavelength of radio waves i.e. more than 10⁻¹ meters. Hence, the correct option is (c).
What is one characteristic of a sample of matter that indicates it is a pure substance?
A)It can be separated using by a physical means, such as filtering.B)The components in a pure substance do not have to be in definite ratios.C)If the composition of a sample varies, the sample is a pure substance.D)If the composition of a sample is fixed, the sample is a pure substance
Answer:
D
Explanation:
If the composition of a sample is fixed, the sample is a pure substance. According to the law of definite proportions (constant composition), components of a pure substance must be in definite ratios regardless of the source.
In which of the following is the number of electrons the ion contains given correctly
Answer:
B. K+ has 18 electrons
Explanation:
Ions are formed when atoms of element gain or loose electrons.When an atom looses electrons it forms a positively charged ion and when an atom gains electrons it forms a negatively charged ion.Metal atoms such as potassium, magnesium and aluminium looses outer most electrons to positively charged ions.Potassium atom has 19 electrons, 19 protons, with an electronic configuration of 2 : 8 : 8 : 1. To form an ion, K looses an electron to form a positively charged potassium ion (K+) with 18 electrons and 19 protons and an electronic configuration of 2:8:8.when fossils fuels are burned what is their chemical potential energy converted into?
The chemical potential energy is converted into electrical energy.
When burned, the chemical potential energy of fossil fuels is converted into thermal and light energy. This transformation occurs through the combustion process, creating carbon dioxide and water while releasing heat. Fossil fuels represent a way of storing energy from ancient sunlight, transformed over millions of years under high pressure and temperature.
Explanation:When fossil fuels such as coal, oil, and natural gas are burned, their chemical potential energy is primarily converted into thermal energy (heat) and light energy. The process of burning is essentially a chemical reaction where these fuels combine with oxygen (O2) to form carbon dioxide (CO2) and water (H2O), releasing energy in the form of heat. This energy release results from breaking the higher energy bonds in the hydrocarbon molecules of the fossil fuels and forming the lower energy bonds of the combustion products.
Fossil fuels are considered a form of long-term storage of energy that originated from ancient sunlight. Through photosynthesis, living organisms such as plants, algae, and photosynthetic bacteria captured solar energy, which then became chemically stored in the organic matter that, under high pressure and temperature over millions of years, transformed into the various types of fossil fuels we use today. This process indicates why fossil fuels are seen as non-renewable energy sources, as the accumulation of such fuels took an extremely long time and cannot be quickly replicated.