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Chemistry, 17.01.2020 06:31 coolman5999alt
The mass of a single rice grain is extremely large compared to the mass of a single atom. (a typical hydrogen atom has a mass of 1.66 × 10–24 g—too small to even imagine! ) chemists therefore count atoms in large groups, called moles, where one mole contains 6.02 × 1023 (avogadro’s number) of atoms. let’s define a food-mole as containing 602 particles (rice, beans, peas, etc.) calculate the mass of one food-mole of rice. this is the food-molar mass of rice.
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Chemistry, 22.06.2019 04:30
Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.
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Chemistry, 22.06.2019 22:40
Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent
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The mass of a single rice grain is extremely large compared to the mass of a single atom. (a typical...
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