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consider the substances below.
• 1 mol of beryllium
• 1 mol of salt
• 1 mol of water
• 1 mol of hydrogen
which statement is true about these substances? 1) they have exactly the same mass.2) they have different numbers of particles.3) they have the same number of atoms.4) they have different masses.
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Answers: 2
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What type of reaction is shown below? check all that apply. 2h2o2 → 2h2o + o2 synthesis decomposition combustion
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Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?
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You know the right answer?
consider the substances below.
• 1 mol of beryllium
• 1 mol of salt
• 1 mol of water<...
• 1 mol of beryllium
• 1 mol of salt
• 1 mol of water<...
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