Answers about Chemistry

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
Read more









Chemistry









How much are speedy freezes?


Asked by Anonymous



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
Read more









Chemistry









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


Asked by Anonymous



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
Read more









Chemistry









How do you properly clean a water bottle?


Asked by Anonymous



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
Read more









Chemistry









What is the viscosity of sputum to facilitate productive coughing?


Asked by Anonymous



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
Read more









Chemistry









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


Asked by Anonymous



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









Chemistry









When water molecules are disappearing into the air?


Asked by Anonymous



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
Read more









Chemistry









What is combination of two or more things?


Asked by Anonymous



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
Read more









Chemistry









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


Asked by Anonymous



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









Chemistry









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


Asked by Anonymous



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
Read more









Chemistry









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


Asked by Anonymous



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









Chemistry









Which is not classified as a particulate?


Asked by Anonymous



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
Read more









Chemistry









What environment is in the polar zone?


Asked by Anonymous



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









Chemistry









What is a polar bill?


Asked by Anonymous



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









Chemistry



+1









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


Asked by Anonymous



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
Read more









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...?


Asked by Anonymous



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
Read more









Chemistry









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


Asked by Anonymous



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
Read more









Chemistry









Is perfume a solution colloid or suspension?


Asked by Anonymous



Perfume is a suspension