1.
What is the formula mass of Al(NO2)3?
A. |
72.99 amu |
|
B. |
165.01 amu |
|
C. |
56.99 amu |
|
D. |
None of these choices is correct |
|
E. |
120.99 amu |
1. What is the formula mass of Al(NO2)3? A. 72.99 amu B. 165.01 amu C. 56.99...
QUESTION 1 The formula mass of ammonium phosphite, (NH 4) 3PO 3, is a. 153.11 amu O b. 125.01 amu c. 97.01 amu d. 133.09 amu QUESTION 2 Naturally occurring element X exists in three isotopic forms: X-28 (27.977 amu, 92.23% abundance), X-29 (28.976 amu, 4.67% abundance), and X-30 (29.974 amu, 3.10% abundance). Calculate the atomic weight of X. a. 27.16 amu b.28.97 amu O c. 86.93 amu d. 48.63 amu e. 28.09 amu QUESTION 3 Balance the following equation...
Q7. What is the formula weight of Fe(NH (SO) 6H,O? a) 392 amu b) 384 amu c 412 amu 436amu d) 376 amu e
19. A molecule with a total mass of 210 amu has the empirical formula CH20. What is the molecular formula? 12.08 . 2 1 .6.6) + 210 a. CH20 b. C,H,O7 C CHHE d. C7H1407 = 6.94 = 7 30.077
What is the number of manganese atoms that equal a mass of 54.94 amu ?a. 1b. 25c. 55d. 6.02 × 1023e. none of the above
Be sure to answer all parts. The atomic mass of Cl is 35.45 amu, and the atomic mass of Al is 26.98 amu. What are the masses in grams of 3.3275 mol of Cl atoms and of 3.8611 mol of Al atoms? g Cl g Al K Prev 19 of 30Next > Be sure to answer all parts. The atomic mass of Cl is 35.45 amu, and the atomic mass of Al is 26.98 amu. What are the masses in...
2. What are the formula weights of (a) KBr and (b)PbCO 3 in (amu) 2. What are the formula weights of (a) KBr and (b) PbCO3 in (amu) OFW of KBr - 207.00 amu ; FW of PbCO3 - 267.21 amu OFW of KBr - 119.00 amu :FW of PbCO, -267.21 amu OFW of KBr - 77.54 amu :FW of PCO, - 167.21 amu OFW of KBr = 19.00 amu :FW of PHCO3 = 67.12 amu
Write the formula for the compound composed of Al3+ and OH- a. Al3OH b. Al(OH)3 c. Al3(OH)2 d. AlOH e. none of above
26) Which of the following is an empirical formula of a compound that is 52.15 percent C, 13.13 percent H, and 34.73 percent O? SHOW WORK 26) A) C4H1202 B) C2H6O C) CH602 D) C3H06 E) None of the answers is correct. 27) Calculate the formula mass of (NH4)3AsO4. A) 165.02 amu B) 156.96 amu C) 417.80 amu D) 108.96 amu E) 193.05 amu
What is the mass percent of C in C2H6? A. 79.85 B. None of these choices is correct C. 92.24 D. 39.93 E. 20.15
21. What are the formula masses of water, H20, propene C3Hg; and 2-propanol, C3H2O? amu = grams 1. A) water: 18 amu; propene: 40 amu; 2-propanol: 58 amu 2. B) water: 18 amu; propene: 42 amu; 2-propanol: 62 amu 3. C) water: 18 amu; propene: 44 amu; 2-propanol: 60 amu 4. D) water: 18 amu; propene: 44 amu; 2-propanol: 64 amu