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Ronald Prasad verified

Numerade educator

In a hydrogen atom, an electron in the 1s orbital is how far from the nucleus? Group of answer choices 5.26 x 10-8 m cannot be determined 0.525 nm

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Ronald Prasad verified

Numerade educator

What is the bond order in CN ? Group of answer choices 3.0 2.0 1.0 2.5 1.5

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Jennifer Hudspeth verified

Numerade educator

An electron can have quantum numbers n= 3; l= 3; ml= -3; ms= +1/2 Group of answer choices True False

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Ronald Prasad verified

Numerade educator

The molecular polarity of CH2F2 is Group of answer choices cannot be determined polar nonpolar

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Ronald Prasad verified

Numerade educator

What are the idealized bond angles in BrF5? Group of answer choices 90o and 180o none of the answers are correct 90o and 120o 90o

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Nicole Smina verified

Numerade educator

A compound is composed of the elements C, H, O, and N. Combustion analysis of a 2.28 g sample of the compound produced 3.39 g of carbon dioxide and 1.74 g of water. In a separate experiment, decomposition of a 7.94 g sample of the compound produced 2.28 g of ammonia (NH3). What is the empirical formula of the compound? Group of answer choices C2H5ON C2H2ON C2H5ON2 none of the answers are correct

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Chareen Guzman verified

Numerade educator

Aluminum metal reacts with manganese(II) chloride to form manganese metal and aluminum chloride. If 8.60 g of aluminum are reacted with 65.0 g of manganese(II) chloride how many g of the reagent in excess will remain at the end of the reaction? Group of answer choices 0.500 g 1.40 g 4.20 g none of the answers are correct 4.80 g

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Nicole Smina verified

Numerade educator

The term "classical physics" refers to Group of answer choices physics before the year 2000 the physical theories of Aristotle physics before Newton physical laws that are deterministic

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Ronald Prasad verified

Numerade educator

Metallic zinc reacts with aqueous iron(III) nitrate to form metallic iron and aqueous zinc(II) nitrate. If 46.5 g of zinc are added to 400 mL of 1.00 M iron(III) nitrate how many g of metallic iron will be formed? Group of answer choices 22.4 g 26.5 g 18.2 g none of the answers are correct

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Ronald Prasad verified

Numerade educator

In a photoelectric effect experiment, light shining on a metal surface having φ = 3.06 x 10-19 J produces photoelectrons having a velocity of 5.26 x 105 m/s. What is the wavelength of the light used? The mass of an electron is 9.11 x 10-28 g. none of the answers are correct 390 nm 460 nm 500 nm

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