Chemistry, 02.09.2020 16:01, grosst4333

How many lone pairs of electrons are represented in the Lewis structure of a nitrate ion (NO3-)?

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Chemistry, 22.06.2019 07:30, superfly903

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

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Chemistry, 22.06.2019 08:30, Crxymia

Name the element in group 17, period 2. (periodic table)

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Chemistry, 22.06.2019 18:00, heggestade

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?

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Chemistry, 22.06.2019 23:00, lufung8627

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]