Be sure to answer all parts.
The mineral galena is composed of lead(II) sulfide and has
an average density of
7.46 g/cm3
.
(a) How many moles of lead(II) sulfide are in 8.01
ft3of galena?
_____×10___moles
(b) How many lead atoms are in 8.05 dm3of galena?
_____×10___atoms of Pb (Enter your answer in scientific notation.)
Be sure to answer all parts. The mineral galena is composed of lead(II) sulfide and has...
Enter your answer in the provided box. Roasting galena [lead(II) sulfide) is an early step in the industrial isolation of lead. How many liters of sulfur dioxide, measured at STP, are produced by the reaction of 5.75 kg of galena with 193 L of oxygen gas at 220°C and 2.00 atm? Lead(II) oxide also forms. LSO2
Lead can be prepared from galena [lead(II) sulfide] by first roasting the galena in oxygen gas to form lead(II) oxide and sulfur dioxide. Heating the metal oxide with more galena forms the molten metal and more sulfur dioxide. (a) Write a balanced equation for each step, including the state of each chemical. (1) (2) (b) Write an overall balanced equation for the process, including the state of each chemical. (c) How many metric tons of sulfur dioxide form for...
26. Roasting galena [lead(II) sulfide] is an early step in the industrial isolation of lead. How many liters of sulfur dioxide, measured at STP, are produced by the reaction of 7.30 kg of galena with 106 L of oxygen gas at 220°C and 2.00 atm? Lead(II) oxide also forms. L SO2
Be sure to answer all parts. The radioactive decay of thallium−206 to lead−206 has a half-life of 4.20 min. Starting with 5.50 × 1022 atoms of thallium−206, calculate the number of such atoms left after 42.0 min. Enter your answer in scientific notation. × 10 atoms
Be sure to answer all parts. How many SO2 molecules are in 2.07 mol of SO2? How many sulfur atoms and oxygen atoms are there? a) × 10 SO2 molecules Enter your answer in scientific notation. b) × 10 S atoms Enter your answer in scientific notation. c) × 10 O atoms Enter your answer in scientific notation.
1 attempts left Check my work Enter your answer in the provided box. Roasting galena (lead(II) sulfide) is an early step in the industrial isolation of lead. How many liters of sulfur dioxide, measured at STP, are produced by the reaction of 4.55 kg of galena with 199 L of oxygen gas at 220°C and 2.00 atm? Lead(II) oxide also forms. 162. 3 L SO2
Be sure to answer all parts. Potassium is the second most abundant metal in the human body. Calculate the following: (a) The number of atoms in 7.85 moles of potassium. x 10 atoms Enter your answer in scientific notation. (b) The number of moles of potassium that contains 9.07 x 1025 atoms. x 10 mol Enter your answer in scientific notation.
Be sure to answer all parts. How many moles are contained in each number of grams of table sugar (C12H2,011, molar mass 342.3 g/mol)? Enter your answer in scientific notation. a. 93.0 g b. 0.0690 g mol
Be sure to answer all parts. How many moles are contained in each number of grams of table sugar (C2H,201, molar mass 342.3 g/mol)? Enter your answer in scientific notation. a. 0.800 g b. 8.40 g mol
Helps 2 attempts left Check my work Be sure to answer all parts. Enter your answers in scientific notation. How many carbon atoms are contained in each of the following number of moles: (a) 3.50 mol; (b) 4.70 mol? Report answer using three significant figures. al atoms * 10 * 10 (6) atoms