Hydrogen peroxide decomposes into water and oxygen because it is a relatively unstable compound, and the decomposition reaction is exothermic, meaning that it releases energy.
Hydrogen peroxide is a compound made up of hydrogen and oxygen atoms, with the chemical formula H₂O₂. It is a relatively unstable compound and can break down into water and oxygen spontaneously. This decomposition reaction can be accelerated by the presence of catalysts such as heat, light, or certain metals.
The decomposition reaction of hydrogen peroxide is exothermic, meaning that it releases energy in the form of heat and light. This energy release can be observed as bubbles of oxygen gas form and escape from the liquid, while the remaining liquid turns into water.
The chemical reaction for the decomposition of hydrogen peroxide is as follows,
2H₂O₂ (hydrogen peroxide) → 2H₂O (water) + O₂ (oxygen)
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if 2.5 moles of each of these compounds are burned completely in o2, which will produce the largest amount of co2?
Answer:
C3H8
Explanation:
To determine which compound will produce the largest amount of CO2 when 2.5 moles of each is burned completely in O2, we need to compare the mole ratios of the compounds and the CO2 produced in their balanced chemical equations.
The balanced chemical equations for the combustion of the compounds are:
C3H8 + 5O2 → 3CO2 + 4H2O
C4H10 + 13/2 O2 → 4CO2 + 5H2O
C8H18 + 25/2 O2 → 8CO2 + 9H2O
From these equations, we can see that 1 mole of C3H8 produces 3 moles of CO2, 1 mole of C4H10 produces 4 moles of CO2, and 1 mole of C8H18 produces 8 moles of CO2.
Therefore, when 2.5 moles of each compound are burned completely in O2, the largest amount of CO2 will be produced by C8H18, which produces 8 moles of CO2 per mole of the compound. The amount of CO2 produced by 2.5 moles of C8H18 would be 8 x 2.5 = 20 moles.
In comparison, 2.5 moles of C3H8 would produce 3 x 2.5 = 7.5 moles of CO2, and 2.5 moles of C4H10 would produce 4 x 2.5 = 10 moles of CO2.
Please explain thoroughly.
Draw the lewis structure.
Label the molecule with - and + if applicable.
Draw the molecule 2 more times so that the molecules are correctly oriented based on the partial charges (if applicable). You should have 3 total molecules.
With a dashed line (----) show how this molecule would interact. (connect partial positive to partial negative)
Identify the type/s of intramolecular forces.
For SI2 & NH3
Answer: 3
Explanation:
As ventricular systole begins, all four heart valves are closed during the:a) ventricular ejection phase.b) isovolumetric contraction phase.c) isovolumetric relaxation phase.d) ventricular filling phase.
As ventricular systole begins, all four heart valves are closed during the isovolumetric contraction phase.
What is the isovolumetric contraction phase?The isovolumetric contraction phase is a phase of the cardiac cycle that occurs during systole, which is the phase of the cardiac cycle when the heart muscle contracts and pumps blood out of the heart.
During the isovolumetric contraction phase, the ventricles of the heart are contracting, but the blood volume in the ventricles remains constant, as the atrioventricular (AV) valves are still closed and the semilunar valves have not yet opened.
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What piece of lab equipment could you use to measure the volume in a drinking glass of water?
graduated cylinder
volumetric flask
graduated beakerall of the above
All of the above-mentioned pieces of lab equipment can be used to measure the volume of water in a drinking glass.
However, each piece of equipment has its own advantages and limitations.
A graduated cylinder is a common piece of lab equipment used for accurate measurement of liquid volumes. It has markings along the side that allow for precise measurement of the volume of liquid in the cylinder.
A volumetric flask is a piece of lab equipment designed to measure and hold a precise volume of liquid. It has a narrow neck and a flat bottom, and is typically used for preparing solutions of a specific concentration.
A graduated beaker is similar to a graduated cylinder, but has a wider base and is less accurate for measuring small volumes of liquid.
All three pieces of equipment can be used to measure the volume of water in a drinking glass, but the choice of equipment will depend on the required accuracy and precision of the measurement. A graduated cylinder would be the most accurate choice, while a graduated beaker may be sufficient for less precise measurements.
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Changing the pH will have the following effects on à catalase-controlled reaction O Increasing the pH will always increase the enzyme activity O Decreesing the pH will always increase the enzyme activity O Decreasing the pH will always decrease the enzyme activity O Changing the pH will have no effect on enzyme activity O Increasing or decreasing the pH above or below the optimum level will decrease the activity
Changing the pH will have an effect on a catalase-controlled reaction.
The correct statement is: "Increasing or decreasing the pH above or below the optimum level will decrease the activity."
What is catalase?
Catalase is an enzyme that is found in many living organisms, including plants, animals, and bacteria. It catalyzes the breakdown of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2). This is an important reaction for cells because hydrogen peroxide is a toxic byproduct of many metabolic processes, and catalase helps to protect cells from its harmful effects.
Enzyme activity is influenced by the pH of the environment in which the reaction takes place. Each enzyme has an optimum pH range in which it functions most efficiently. Any deviation from this optimum pH range will lead to a decrease in enzyme activity. This is because changes in pH can alter the enzyme's shape and affect its ability to bind to the substrate or catalyze the reaction.
For catalase, the optimum pH range is typically between pH 7 and pH 11, depending on the specific source of the enzyme. If the pH is increased or decreased above or below this range, the enzyme activity will decrease.
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