Compound 1 = Carbon 1 atom & Hydrogen 1 atom
Compound 2 = Nitrogen 1 atom & Hydrogen 1 atom
Compound 3 = Magnesium 1 atom
Compound 4 = Sodium 1 atom
This should be the answers because the compounds after the example don’t have any numbers
0,35 kmol/m³ = 0,35 mol/dm³ = 0,35 mol/L
175 mL = 0,175 L
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C = n/V
n = 0,35×0,175
n = 0,06125 mol
mCa(NO₃)₂: 40+(14×2)+(16×6) = 164 g/mol
1 mol --------- 164g
0,06125 ---- X
X = 10,045g
To prepare 175 mL of 0,35M solution, add 10,045g of calcium nitrate and add water to a volume of 175ml.
Energy is absorbed so, the mass is increased.
energy is released so, the mass is increased
<span>Yes its H2O , the H2O and the OH- are acid/Base Conjugate pair................just like NH3 and NH4
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Answer:
Explanation:
<u><em>What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?</em></u>
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PE = MGH, that is, potential energy = mass x gravity x height.
2*2*9.8=
39.2 joules