02/09/21
need the answer
The average atomic mass of nitrogen is 14.0067 amu. Predict which isotope listed below is the most abundant in nature. they are equally abundant Nitrogen-15 Nitrogen-13 Nitrogen-14
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02/07/21
What is the specific heat of silicon if it takes 212 J to raise the temperature of 43.5g of Si by 6.2 degrees C?
What is the specific heat of silicon if it takes 212 J to raise the temperature of 43.5g of Si by 6.2 degrees C?
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01/31/21
Calculate the mass of 156 mL of a gas whose density is 1.225 g/L. Express your answer in grams using the correct number of significant figures.
Calculate the mass of 156 mL of a gas whose density is 1.225 g/L. Express your answer in grams using the correct number of significant figures. Do not enter your answer using scientific notation.
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01/31/21
Chemistry please helpp
Determine the Mass Number of the Following Elements: Al - 13 Protons 15 Neutrons B - 5 Protons 6 NeutronsC - 6 Protons 8 NeutronsSc - 21 Protons 25 NeutronsNa - 11 Protons 13 Neutrons
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