Chemistry

Chemistry, 04.08.2019 00:30, AdoNice

How many ne atoms are contained in 32.0g of the element?

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Chemistry, 27.06.2019 23:00, jinxjungkook3

Which of the following is a key tenet of dalton's atomic theory (click on all that apply)? (1 point) all elements are composed of tiny indivisible particles called atoms. atoms of the same element are identical. the atoms of any one element are different from those of any other element atoms of different elements can physically mix together or can chemically combine to form compounds chemical reactions occur when atoms are separated from each other, joined, or rearranged in a different combination. atomic nuclei contained the negatively charges electrons. atoms retain their identity in a chemical reaction.

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Physics, 04.07.2019 00:30, Feiee1

What new idea led thomson to replace dalton’s billiard ball atoms? a.) the discovery that all atoms of an element are the same b.)the discovery that atoms of different atoms are different c.)the discovery that atoms contained smaller parts called electrons d.) the discovery that atoms of different atoms can combine to make compounds

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Chemistry, 19.09.2019 16:20, vorhees2406

25. which one of the following is not one of the postulates of dalton's atomic theory? a) atoms are composed of protons, neutrons, and electrons. b) all atoms of a given element are identical; the atoms of different elements are different and have different properties. c) atoms of an element are not changed into different types of atoms by chemical reactions: atoms are neither created nor destroyed in chemical reactions. d) compounds are formed when atoms of more than one element combine; a given compound always has the same relative number and kind of atoms. e) each element is composed of extremely small particles called atoms.

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Chemistry, 25.09.2019 04:30, marciekinser

8. a researcher4. students in a science class prepared flash cards so they could quiz one anotherabout the arrangement of the periodic table. one of the flashcards containedinformation about two elements, element l and element m.atoms of element m have two morevalence electrons than atoms of element l• atoms of element l are more reactive thanatoms of element m.• both elements are metals.the students had to use the information on the flash card to determine possiblepositions of the two elements on a blank periodic table. which periodic table hasthe elements placed in locations that match the information on the flash card? .wn

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