(a) Interpretation: The number of moles of platinum in the cone should be calculated. Concept introduction: The number of moles of a substance is related to molar mass of the substance as follows: n = m M Here, m is mass and M is molar mass. In 1 mol of a substance there are 6.023 × 10 23 units of that substance. Also, density of a substance is related to mass and volume as follows: d = m V Here, m is mass and V is volume of the substance.
(a) Interpretation: The number of moles of platinum in the cone should be calculated. Concept introduction: The number of moles of a substance is related to molar mass of the substance as follows: n = m M Here, m is mass and M is molar mass. In 1 mol of a substance there are 6.023 × 10 23 units of that substance. Also, density of a substance is related to mass and volume as follows: d = m V Here, m is mass and V is volume of the substance.
Definition Definition Number of atoms/molecules present in one mole of any substance. Avogadro's number is a constant. Its value is 6.02214076 × 10 23 per mole.
Chapter 3, Problem 6QAP
Interpretation Introduction
(a)
Interpretation:
The number of moles of platinum in the cone should be calculated.
Concept introduction:
The number of moles of a substance is related to molar mass of the substance as follows:
n=mM
Here, m is mass and M is molar mass.
In 1 mol of a substance there are 6.023×1023 units of that substance.
Also, density of a substance is related to mass and volume as follows:
d=mV
Here, m is mass and V is volume of the substance.
Interpretation Introduction
(b)
Interpretation:
The number of electrons in there in the cone should be calculated.
Concept introduction:
The number of moles of a substance is related to molar mass of the substance as follows:
n=mM
Here, m is mass and M is molar mass.
According to Avogadro’s law, in 1 mol of a substance there are 6.023×1023 units of that substance.
Predict the major products of the following organic reaction:
Δ
?
Some important notes:
• Draw the major product, or products, of the reaction in the drawing area below.
• If there aren't any products, because no reaction will take place, check the box below the drawing area instead.
• Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are
enantiomers.
Explanation
Check
Click and drag to start drawing a structure.
L
Predict the major products of the following organic reaction:
O O
+
A
?
Some important notes:
• Draw the major product, or products, of the reaction in the drawing area below.
• If there aren't any products, because no reaction will take place, check the box below the drawing area instead.
• Be sure to use wedge and dash bonds when necessary, for example to distinguish between major products that are
enantiomers.
Explanation Check
Click and drag to start drawing a structure.
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