How many grams of HNO3 can be produced from 400.g of No2?
Answers
First we need the balanced equation for this reaction: 3 NO2(g) + H2O(l) = 2 HNO3(aq) + NO(g)
Second, find moles of NO2:
(400.g NO2)/(46.01g/mol NO2) = 8.69mol NO2
Third, multiply moles by the mole ratios of NO2 to HNO3 to get moles of HNO3: (8.69mol NO2)(2mol HNO3/3mol NO2) = 5.79mol HNO3
Fourth, multiply moles of HNO3 by its molar mass: (5.79mol HNO3)(63.01g/mol HNO3) = 365g HNO3 produced
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The significance of absolute zero temperature is that at this temperature the particles of matter have minimum motion.
What is matter?
Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.
Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.
The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.The matter available always obeys law of conservation of matter as it is neither created nor destroyed.
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b. limited life.
c. difficulty in raising capital.
d. double taxation of the corporation s income and of dividends paid to shareholders.
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Corporations end up paying taxes twice. The corporation pays tax when it shows a profit. Secondly the corporation pays tax when it pays out dividends to its shareholders. Sole proprietorships and partnerships are taxed as owners of the business. The owners of a corporation are taxed individually from the corporation. The advantage of this is that the owners of a corporation are not taxed on the corporation's profit.
Final answer:
Option D. A major disadvantage of a corporation is double taxation of the corporation's income and dividends paid to shareholders.
Explanation:
A major disadvantage of a corporation is the double taxation of the corporation's income and dividends paid to shareholders. This means that not only is the corporation subject to income tax on its profits but the dividends distributed to shareholders are also taxed as the shareholders' personal income. This results in a higher overall tax burden for shareholders, making it a major disadvantage of a corporation.
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Answers
b. C5H5NH+, OH-
c. H2O, OH-
d. C5H5N, H2O
Answers
Answer: b. ,
Explanation:
According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and thus forming conjugate base and a base is defined as a substance which accepts protons and thus forming conjugate acid.
For the given chemical equation:
Here, is accepting a proton, thus it is considered as a base and after accepting a proton, it forms
which is a conjugate acid.
And, is losing a proton, thus it is considered as an acid and after loosing a proton, it forms
which is a conjugate base.
Hence, the correct answer is b. ,
Balance the equation and state which substance is oxidised and which is reduced
Answers
Explanation:
To balance the chemical equation for the extraction of iron from iron(III) oxide using carbon, you need to ensure that the same number of each type of atom appears on both sides of the equation. Here's the balanced equation:
2Fe₂O₃ + 3C -> 4Fe + 3CO
Now, let's determine which substance is oxidized and which is reduced:
1. Iron (Fe) undergoes a change in oxidation state from +3 in iron(III) oxide (Fe₂O₃) to 0 in elemental iron (Fe). It is reduced because it gains electrons, going from a higher positive oxidation state to zero.
2. Carbon (C) in carbon (C) undergoes a change in oxidation state from 0 to +2 in carbon monoxide (CO). Carbon is oxidized because it loses electrons and goes from an oxidation state of 0 to +2.
So, in this chemical reaction:
- Iron is reduced (it gains electrons).
- Carbon is oxidized (it loses electrons).