When a chemical reaction releases heat, it is said to be exothermic; the heat content of the products is less than that of the reactants, and the change in enthalpy, ___, has, by convention, a negative value.A.HB.△ SC.△ GD.△ H的答案是什么.用刷刷题APP
a溶解放热 浓硫酸溶解时放出大量的热,因此浓硫酸稀释时应该“酸入水,沿器壁,慢慢倒,不断搅。”若将水倒入浓硫酸中,温度将达到173℃,导致酸液飞溅,造成安全隐患。 Dissolves exothermically When strong sulfuric acid dissolution emits the massive heat, therefore time strong sulfuric acid dilution should “the...
What is a phase change linked to? a. Change in molecular activity b. Maybe due to the addition of heat c. Maybe due to loss of heat d. All of the above Warm substances rise, and cool substances fall. Name the fundamental property of these...
Tubular plastic pipe-welding insert, includes chambers containing reagents releasing heat by exothermic reaction when partition is ruptureddoi:DE10149301Adjacent chambers (1, 2) contain reagents and have partition(s) which can be ruptured. The chambers are detachable from the tubular section. An ...
How do you know if its exothermic or endothermic? In a chemical equation, thelocation of the word "heat"can be used to quickly determine whether the reaction is endothermic or exothermic. If heat is released as a product of the reaction, the reaction is exothermic. If heat is listed on ...
Following the electronic realignment between hydrogen and oxygen to create a new molecule, the product of the reaction is water and heat. The heat can be harnessed to do work, such as driving turbines by heating water. The products are produced quickly due to the exothermic, chain-reaction nat...
While aluminum shares many properties with metals (conducting electricity and heat, shine), it's got some unique properties as well, which comes from its location in the periodic table. Since it's closer to the non-metals than the transition metals, its properties are somewhat transient. For ...
Answer to: What is the maximum amount of ethanol (in grams) that can be produced when 0.30 kg of ethylene (C_2H_4) and 0.029 kg of steam are placed...
Is zinc and hydrochloric acid exothermic? Yes there is bond formation, henceexothermic, negative enthalpy change in rate of reactive (-ve delta H), energy is released. Acid metal reactions usually produce a salt, in this case, zinc chloride and hydrogen gas. ... That's due to heat energy...
• The 3M™ Abator (an air pollution control device) is a highly effective device that uses an exothermic (heat producing) reaction to convert EO exhaust into CO₂ and water vapor. It is designed exclusively for use with Steri-Vac Sterilizers. • At normal operating temperatures and...