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1.75 x 10^25 selenium atoms

1.75 x 10^25 selenium atoms contains how many moles of selenium?
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2. asked by Lu
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What is the valency of selenium in hydrogen selenide?Consider what selenium's group is in the periodic table. There is oxygen
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2. asked by sarah
3. 624 views
The active volcano Mauna Loa, in Hawaii, and the now-extinct volcano Ei Yunque. Puerto Rico, have certain basaltic lava rocks
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Look at Selenium (Se) and Oxygen (O) on the Periodic Table which one is larger? (1 point) Responses Oxygen (O) Oxygen (O)
1. 1 answer
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Look at Selenium (Se) and Oxygen (O) on the Periodic Table which one is larger? (1 point) Responses Selenium (Se) Selenium (Se)
1. 1 answer
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What types of atoms are in the chemical formula AgHO4S? Source: concept w. Shutterstock (1 point) Responses silver, hydrogen,
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2. 14 views
Mole and Particle practiceHow many representative particles (atoms, ions, molecules, etc) are present in each of the following?
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2. asked by jaz
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1) What is the charge on the ion that Selenium forms in an ionic compound?I am not sure about this. 2) What noble gas is
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2. asked by Hannah
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Write the electron configuration for the following ground state atoms and ions. strontium+2 ion; iron element; selenium -2 ion;
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2. asked by Paul
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Based on location in the periodic table, which element has chemical properties that are most similar to iodine (I)?(1
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2. asked by school
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