Explanation:
is the movement of heat. ... Heat flows in solids by conduction, which occurs when two objects in contact with each other transfer heat between them. That happens because the molecules hit each other, and the faster moving molecules in the hot object spread that energy into the cooler object.
Ionic compounds are formed by the bonding of non-metals to metals. Because inonic bonds involve electon transfer, the result is a mixture of ions; positive and negative, following the laws of electrostatics, like charges attract. These ions then form a giant structure (lattice) of ionic bonds and it is because of this that ionic compounds are solids (unless dissolved in water) and have extremely high melting and boling temparatures. In additions, beucase of the fixed placement of ions (charged particles) in a lattice, in the solid state ionic compounds don't conduct electricity very well but if dissolved in water (aqueous solution) the ions are free to move and carry a current.
Answer:
Explanation:Until the past decade, scientists, research institutions, and government agencies relied solely on a system of self-regulation based on shared ethical principles and generally accepted research practices to ensure integrity in the research process. Among the very basic principles that guide scientists, as well as many other scholars, are those expressed as respect for the integrity of knowledge, collegiality, honesty, objectivity, and openness. These principles are at work in the fundamental elements of the scientific method, such as formulating a hypothesis, designing an experiment to test the hypothesis, and collecting and interpreting data. In addition, more particular principles characteristic of specific scientific disciplines influence the methods of observation; the acquisition, storage, management, and sharing of data; the communication of scientific knowledge and information; and the training of younger scientists.1 How these principles are applied varies considerably among the several scientific disciplines, different research organizations, and individual investigators.
Answer:
(4) CuO + H₂ → Cu + H₂O.
Explanation:
<em>(1) Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag.</em>
It is considered as a single replacement reaction that Cu replaces Ag in its salt AgNO₃.
<em>(2) 2Cu + O ₂ → 2CuO.</em>
It is a combustion reaction that Cu reacts with oxygen results CuO.
<em>(3) CuCO₃ → CuO + CO₂.</em>
It is a decomposition reaction that CuCO₃ is decomposed to CuO and CO₂.
<em>(4) CuO + H₂ → Cu + H₂O.</em>
It is considered as a synthesis reaction that two reactants CuO and hydrogen are reacted to produce Cu and H₂O.
<em>So, the right choice is: (4) CuO + H₂ → Cu + H₂O.</em>
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The normal boiling point for iodine is 184.4 degrees Centigrade. Normal boiling point refers to the temperature at which any liquid boils at one atmosphere of pressure. This temperature is more specific than just a boiling point and is useful in comparing various liquids more accurately.
