The reaction represented by the equation 2CO2 + 570 kJ → 2CO + O2 is an endothermic reaction, as it requires the absorption of energy (570 kJ) to proceed. In th
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Chemistry

How much are speedy freezes?

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Speedy freezes typically refer to quick freeze services offered by various businesses, particularly in the food industry, but the exact cost can vary widely dep
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Chemistry

Are changes of state chemical changes or physical changes Explain your answer.?

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Changes of state, such as melting, freezing, boiling, and condensation, are physical changes. This is because they involve alterations in the physical form of a
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Chemistry

How do you properly clean a water bottle?

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Put in some water, then a spoonful of sodium hydrogen carbonate(sodium b-carbonate/baking powder). Fill the water wter bottle to the rim. Put the cap on. Give i
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Chemistry

What is the viscosity of sputum to facilitate productive coughing?

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The viscosity of sputum plays a crucial role in facilitating productive coughing, as it affects the ease with which mucus can be expelled from the airways. Idea
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Chemistry

How do you calculate x and y in given molecular formula HO2CCxHyCO2H provided that relative molecular mass of compound in 118?

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To calculate x and y in the molecular formula HO2CCxHyCO2H, first determine the contributions to the molecular mass from known atoms. The formula consists of 2
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Chemistry

When water molecules are disappearing into the air?

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When water molecules evaporate, they transition from a liquid state to a gaseous state, escaping into the air as water vapor. This process occurs when heat ener
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Chemistry

What is combination of two or more things?

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A combination of two or more things refers to the act of merging or joining them to create a new entity or result. This can apply to various contexts, such as m
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Chemistry

Is A pop is a heterogeneous a homogeneous or a solution?

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A pop, 아드레닌 효능 commonly known as soda, is considered a homogeneous mixture. In a homogeneous mixture, the components are evenly distributed, and you cannot easily disti
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Chemistry

Why was the solution heated before it was left in an evaporating dish?

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The solution was heated before being placed in an evaporating dish to increase the rate of evaporation of the solvent. Heating raises the temperature, which in
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Chemistry

What kind of solute particles are present in water solutions of electrolytes and non electrolytes?

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In water solutions of electrolytes, the solute particles are ions, which are formed when the electrolyte dissociates into charged particles upon dissolving. For
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Chemistry

Which is not classified as a particulate?

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A gas is not classified as a particulate. Particulates are small solid or liquid particles suspended in a gas or liquid, whereas gases consist of molecules that
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Chemistry

What environment is in the polar zone?

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The polar zone is characterized by extremely cold temperatures, ice, and snow, with long, harsh winters and short, cool summers. Vegetation is sparse, primarily
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Chemistry

What is a polar bill?

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A polar bill is a type of legislative proposal aimed at addressing issues related to the Arctic region, including climate change, environmental protection, and
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Chemistry

+1

The atomic number of an atom is equal to the number of?

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The atomic number represents the total number of protons found in the nucleus of every atom in that element. A comparison found in an article made in 2024 by Ch
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Chemistry

During a physics lab a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that…?

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the rubbing process causes electrons to be transferred from the plastic strip to the cotton. As electrons carry a negative charge, the loss of these negatively
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Chemistry

When there are one or more substances changing into new substances then a chemical or physical change has occured?

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When one or more substances change into new substances, a chemical change has occurred. This process typically involves the breaking and forming of bonds, resul
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Chemistry

Is perfume a solution colloid or suspension?

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Perfume is a suspension