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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. 644 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
2. 56 views
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. 31 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
3. 1,370 views
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
3. 6,114 views
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
3. 99 views