Answer:
2)
3)
Explanation:
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2) In this case, since magnesium sulfate is MgSO₄, we can see how magnesium weights 24.305 g/mol, sulfur 32.06 g/mol and oxygen 64.00 g/mol as there is one atom of magnesium as well as sulfur but four oxygen atoms for a total of g/mol; thus the percent compositions are:
3) In this case, although the element seems to contain Ag and O, we infer its molecular formula is Ag₂O; thus, since we have two silver atoms weighing 215.74 g/mol and one oxygen atom weighing 16.00 g/mol for a total of 231.74 g/mol, we obtain the following percent compositions:
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The atom's radius and mass increase from top to bottom. The density of elements from top to bottom also increases in a periodic table.
Density of Sn= Mass of Sn/Volume of Sn
=24.3968/7.28
=3.49 g/ml*ml/cm³
=3.49 g/cm³
It is accurate to assume that the density of Sn will fall between that of Si and lead . the mass number and radius of the atoms increase from group to group as we move from top to bottom in a periodic table.. The density rises because the increase in mass number is greater than the increase in radius. Simply multiplying by the molar mass of the gas allows one to derive the formula for mass density from the formula for number density. Do not forget that the mass is equal to the moles (n) times the molar mass (M). Smaller masses can be measured in grams instead of kilograms (kg), which is the standard SI unit for mass.
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Answer:
Carbon iv oxide + water - - carbonic acid
Explanation:
CO2 + H2O--H2CO3 (balanced equation)
Answer:
What four things do all plants need?
What are the parts of the plant?
What does the root do for the plant?
What does the stem do for the plant?
What do leaves do for the plant?
The plant parts that take in water and minerals from the soil are?
What is the first stage in the growth of many plants?
Explanation:
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The molar concentration of the solution is 1.55 mol/L.
1. Convert grams to moles.
2. Convert millilitres to litres
3. Calculate the molar concentration (c)
