Mathematics

Mathematics, 14.07.2019 16:30, cheerthi16

Idon’t know which statements are true

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Mathematics, 14.07.2019 16:30, jass624

Idon’t know which statements are true

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Chemistry, 24.10.2019 23:43, Theresab2021

(1) an atom with the electron configuration 1s22s22p2 possesses two valence electrons. (2) the formula of the ionic compounds that contains ba2+ and n3- ions is ba2n3. (3) the polyatomic ions nitrate and azide are both tetraatomic entities. a) all three statements are true. b) two of the three statements are true. c) only one of the statements is true. d) none of the statements is true.

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Physics, 05.11.2019 03:31, itsnotxavier

Consider the following three statements: for any electromagnetic radiation, the product of the wavelength and the frequency is a constant. if a source of light has a wavelength of 3.0 å, its frequency is 1.0×10¹⁸ hz. the speed of ultraviolet light is greater than the speed of microwave radiation. which of these three statements is or are true? (a) only one statement is true. (b) statements (i) and (ii) are true. (c) statements (i) and (iii) are true. (d) statements (ii) and (iii) are true. (e) all three statements are true.

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Chemistry, 07.11.2019 21:31, valeriegarcia12

Consider the following three statements: (i) for any electro-magnetic radiation, the product of the wavelength and the frequency is a constant. (ii) if a source of light has a wavelength of 3.0 å, its frequency is 1.0*1018 hz. (iii) the speed of ultra-violet light is greater than the speed of microwave radiation. which of these three statements is or are true? (a) only one statement is true. (b) statements (i) and (ii) are true. (c) statements (i) and (iii) are true. (d) statements (ii) and (iii) are true. (e) all three statements are true.

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