Calculate the molar mass of the noble gas krypton in a natural sample, which is 0.62% 78Kr (molar mass 77.92 g/mol), 2.1% 80Kr (molar mass 79.91 g/mol), 10.62% 82Kr (molar mass 81.91 g/mol), 11.73% 83Kr (molar mass 82.92 g/mol), 57.72% 84Kr (molar mass 83.91 g/mol), and 17.21% 86Kr (molar mass 85.91 g/mol). Answer in units of g/mol. Your answer must be within ± 0.001%

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.

the term hydride is commonly named after binary compounds that hydrogen forms with other elements of the periodic table. hydride compounds in general form with almost any element, except a few noble gases. the trends and properties vary according to the type of intermolecular force that bonds the elements together, the temperature, its molecular masses, and other components. hydrides are classified into three major groups, depending on what elements the hydrogen bonds to. the three major groups are covalent, ionic, and metallic hydrides. formally, hydride is known as the negative ion of a hydrogen, h-, also called a hydride ion. because of this negative charge, hydrides have reducing, or basic properties. its special characteristics will be further discussed.

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