how many potassium atoms are in 5.213g of potassium manganate? 6. How many potassium atoms are...
7. _Pb + K2SO4 → PbSO4 + K How many atoms of potassium are produced from 2.50 * 10” units of K2SO4
what is the mass (grams) of 6.022 x 1023 potassium atoms? - How many sodium atoms are there in 5.000 moles? How many sodium atoms are there in 100 narams of sodium?
Chem 101 Final I Exam Poge A2s10r 2 8: A compound contains 24.09 grams of potassium, 0308 moles of manganese, an oxygen. What is the empirical formula? a) K MnO 7.42 x 10 atoms of b) KMnO, c)KMnO d) K,MnO, 9: If 250 mL of 12.0 M HCI s Chem 101 Final I Exam Poge A2s10r 2 8: A compound contains 24.09 grams of potassium, 0308 moles of manganese, an oxygen. What is the empirical formula? a) K MnO 7.42...
how many atoms are in 1.2 mol of carbon Question 4 of 22 How many atoms are in 1.2 mol of carbon? atoms Question 6 of 22 Determine the molar mass of CH3OH. g/mol 1 2 3 Tue Oct 29 Question 8 of 22 How many atoms of vanadium are in 1.28 grams of vanadium ADD FACTOR RESET ANSWER Question 11 of 22 What is the mass percentage of Clin hydrochlorothiazide, C3H2CIN30.SZ? 1 % 1 2 3
(3 pts.) 3 If 3.0 moles of potassium react with excess oxygen, how many moles of potassium oxide will form? 4 K(s) + O₂(g) → 2 K₂O(s) (3 pts.) 4 How many grams of potassium oxide can be produced from 4.50 g of K and an excess of O, based on the equation in question 3?
12. How many formula units are contained in 162.4 g of K Cro? - a. How many potassium ions? b. How many CrO 2. ions? C. How many atoms of all kinds?
I need the answers for questions 2-3. (1.5 point) 2. How many atoms of which elements are present in a molecule of CH3(CH2)2Cl? (2 points) 3. Which of the following equations are balanced? Show your work. a. 6Na + Fe203 2Fe+3Na20 b. MnO+ 4HCI MnCl2 + 2H20 + Cl c. C4H10+902 4CO2+5H2O d. 3H2S+2HNO3 3S+2NO + 4H2O
(3 pts.) 3 13.0 moles of potassium react with excess oxygen, how many moles of potassium oxide will form? K(s) + _ _02 (g) → K20 (5) (3 pts.) 4 How many grams of potassium oxide can be produced from 4.50 g of K and an excess of O, based on the equation in question 3?
6. How many atoms of iron are there in a piece of iron thin foil measuring 10x9x0.01 cm? Fe Density = 7.8 g/cm3, Atomic weight = 55.85 g/g-atom; Avogadro's no. = 6.023 x 1023 atoms.
Use the References to access important values if needed for this question. How many ATOMS of phosphorus are present in 1.38 grams of tetraphosphorus decaoxide? atoms of phosphorus. 2. How many GRAMS of oxygen are present in 1.01 1023 molecules of tetraphosphorus decaoxide? grams of oxygen days grams 1. How many GRAMS of potassium sulfate are present in 4.96 moles of this compound? moles 2. How many MOLES of potassium sulfate are present in 1.67 grams of this compound?