Assume that one grain of sand has an average size of 1 millimeter across. based on the chemical composition of sand, can you guess how many atoms are in just one grain of sand? twenty million? twenty billion? keep going. twenty trillion? twenty quadrillion? you're not there yet! twenty quintillion—or the number 2 followed by nineteen zeros—is an approximation of the number of atoms in one grain of sand. but how much is that?
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Chemistry, 21.06.2019 20:30
Which sentence best describes the formation of igneous rock? a- lava on the surface dries up and makes arock b_melted rocks cools and forms crystals c_rocks under tremendous heat and pressure d_magma is melted rock underground
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Chemistry, 22.06.2019 04:50
Write the overall equation for the reaction for lithium battery
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Chemistry, 22.06.2019 19:20
Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?
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Chemistry, 22.06.2019 20:00
What is the molarity of the solution produced when 145 g of nacl is dissolved in sufficient water to prepare 2.75 l of solution?
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Assume that one grain of sand has an average size of 1 millimeter across. based on the chemical comp...
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