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The rate of effusion of an unknown gas was measured to be 25.3 mL/min. Under similar conditions, a known gas with a density of 3.1 g/mL effuses at 19.5 mL/min. What is the density of the unknown gas?
Strategy: Let ρ1 be the density of the unknown gas.
When burning magnesium is lowered into a gas jar containing nitrogen 1 oxide it continues to burn forming a white solid
a solution of 3.80 g of CH3COOH in 80.0 g C6H6 has a freezing point of 3.50°C. calculate molar mass of the solute (CH3COOH). the normal freezing point of pure benzene is 5.50°C
a. Cisplatin or Platinol has a chemical PtCl2(NH3)2 that is used in the treatment of certain cancers. Calculate (a) the amount (mol) of compound in 285.3 g of cisplatin; (b) the number of hydrogen atoms in 0.98 mol of cisplatin.
Isoflavones are weaker antioxidants than anthocyanidins. What could be the reason?
2g of NaOH is dissolved in 500dm³ of solvent.what is the molar concentration of the solution?
The amino acid methionine, which is essential in human diets, has the molecular formula C5H11NO2S. Determine (a) its molecular mass; (b) the number of moles of H atoms per mole of methionine; (c) number of grams of C per mole of methionine; (d) the number of C atoms in 9.07 mol methionine
3. Lead(II) sulfate formed in the reaction of 145 mL of 0.123 M lead(II) nitrate and excess sodium sulfate.
a. Write the balance chemical equation
b. What type of chemical reaction?
the volume of a certain quantity of n2 gas at 20 Celsius and 100.0 kPa is 15.0L. What will be its volume at 27 Celsius at 1.5 atm?
Combination and oxygen produced carbon dioxide and water which is given by the chemical reaction formula C4H10+CO2>CO2+H20
