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ke ke 12. Calculate the atomic weight of Kelsium, a fictional element,...
Calculate the atomic weight of element carbon (C), and element uranium (U). The isotope abundance: 12C,...
Calculate the atomic weight of element carbon (C), and element uranium (U). The isotope abundance: 12C, 98.90%; 13C (13.00335 amu), 1.10%; 238U (238.05078 amu), 99.28%; 235U (235.04392 amu), 0.72%, assuming 14C and 234U are negligible.
18. Hypothetical element Z. has three naturally occurring isotopes, z , andz Calculate the atomic mass...
18. Hypothetical element Z. has three naturally occurring isotopes, z , andz Calculate the atomic mass of 7. Isotope 287 297 307 29.2252 amu 28.9757 amu 28.7260 amu Isotopic Mass (amu) 27.976927 Abundance % 92.23 4.67 3.10 D) 28.976495 29.973770 A) B) C) 28.0855 amu E) 27.9801 amu 19. An anion is defined as A) B) a charged atom or group of atoms with a net negative charge. a stable atom. a group of stable atoms. an atom or group...
Element X has two natural isotopes: X-6 (6.015 amu) and X-7 (7.016 amu). Calculate the atomic...
Element X has two natural isotopes: X-6 (6.015 amu) and X-7 (7.016 amu). Calculate the atomic mass of element X given the abundance of X-7 is 92.5%. a. 6.09 amu b. 6.50 amu 6.52 amu d 6.94 amu e. 12.5 amu
12. There are 3 main isotopes of lead. The relative abundances are given as follows: Isotope1:...
12. There are 3 main isotopes of lead. The relative abundances are given as follows: Isotope1: 53.19% 0.s Isotope 2: 24.47% o.u lsotope 3: 22.34 % ),' isa The atomic masses of isotope 1 and 2 are 207.98 amu and 205.97 amu respectively. The average atomic mass of lead is 207.20 amu. What is the atomic mass in amu of isotope 3? O. A. 207.12 B. 206.24 C. 205.64 D. 206.69 E. 208.33 20 206-n 2
5) Calculate the atomic mass of an imaginary element X that has 3 naturally occurring isotopes...
5) Calculate the atomic mass of an imaginary element X that has 3 naturally occurring isotopes with the following masses and natural abundances: 106.90509 amu 108.90476 amu 107.91536 amu 51.84% 38.46% 9.70% A) 106.80 amu B) 108 amu C) 107.77 amu D) 108.32 amu E) 107.8 amu
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate...
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate the atomic weight of the element. (20 pts) Isotope mass Percentage 34.97 amu 75.78% 36.97 amu 24.22% B. What is the element? C. How many neutrons does the heavier isotope have? (Round to whole number) D. How many electrons does the element have? E. What type(metal/nonmetal) of element is it? F. If the element above gains 1 electron what neutral element has the some...
# 26. (10 points) An unknown element (x) discovered on a planet in another galaxy was...
# 26. (10 points) An unknown element (x) discovered on a planet in another galaxy was found to exist as two isotopes. Their atomic masses and percent abundances are listed in the following table. What is the relative atomic mass of the element? Isotope Mass (amu) Natural Abundance %) 22x 21.995 75.00 20x 19.996 25.00 #27. (6 points) A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to...
1) An analysis indicated that the concentration of mercury in a sample of drinking water was...
1) An analysis indicated that the concentration of mercury in a sample of drinking water was 0.680 parts per billion. What quantity of mercury (g) was present in 15.0 L of the water, the density of which is 0.998 g/ml? A) 6.82 B) 1.72 x 10-8 C) 6.07 x 10-3 D) 1.06 x 10-6 E) 3.45 x 10-4 F) 4.54 x 10-5 G) 1.02 x 10-5 2) Boron has two naturally occurring isotopes, Boron-10 (10.01293 amu), and Boron-11 (11.0093 amu),...
5. How many atoms of nitrogen are in 10 grams of NHINO? a)0.125 b) 2 17.53...
5. How many atoms of nitrogen are in 10 grams of NHINO? a)0.125 b) 2 17.53 x 10 d) 1.51 x 10 1 6.02 x 10 6. The average molar mass of Cu, which has two naturally cecurring isotopes is of the islopes has an atomic weight of 619 amu and makes up e9.1% of lhe custope. The other isotope has an abundance of 30.9% . The atomic weight (am) of the second istice is 63.5 amu. One a 63.2...
QUESTION 1 The formula mass of ammonium phosphite, (NH 4) 3PO 3, is a. 153.11 amu...
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...
18. Hypothetical element Z. has three naturally occurring isotopes, z , andz Calculate the atomic mass of 7. Isotope 287 297 307 29.2252 amu 28.9757 amu 28.7260 amu Isotopic Mass (amu) 27.976927 Abundance % 92.23 4.67 3.10 D) 28.976495 29.973770 A) B) C) 28.0855 amu E) 27.9801 amu 19. An anion is defined as A) B) a charged atom or group of atoms with a net negative charge. a stable atom. a group of stable atoms. an atom or group...
Element X has two natural isotopes: X-6 (6.015 amu) and X-7 (7.016 amu). Calculate the atomic mass of element X given the abundance of X-7 is 92.5%. a. 6.09 amu b. 6.50 amu 6.52 amu d 6.94 amu e. 12.5 amu
12. There are 3 main isotopes of lead. The relative abundances are given as follows: Isotope1: 53.19% 0.s Isotope 2: 24.47% o.u lsotope 3: 22.34 % ),' isa The atomic masses of isotope 1 and 2 are 207.98 amu and 205.97 amu respectively. The average atomic mass of lead is 207.20 amu. What is the atomic mass in amu of isotope 3? O. A. 207.12 B. 206.24 C. 205.64 D. 206.69 E. 208.33 20 206-n 2
5) Calculate the atomic mass of an imaginary element X that has 3 naturally occurring isotopes with the following masses and natural abundances: 106.90509 amu 108.90476 amu 107.91536 amu 51.84% 38.46% 9.70% A) 106.80 amu B) 108 amu C) 107.77 amu D) 108.32 amu E) 107.8 amu
2. An element has 2 naturally occurring isotopes with the following masses and abundances A. Calculate the atomic weight of the element. (20 pts) Isotope mass Percentage 34.97 amu 75.78% 36.97 amu 24.22% B. What is the element? C. How many neutrons does the heavier isotope have? (Round to whole number) D. How many electrons does the element have? E. What type(metal/nonmetal) of element is it? F. If the element above gains 1 electron what neutral element has the some...
# 26. (10 points) An unknown element (x) discovered on a planet in another galaxy was found to exist as two isotopes. Their atomic masses and percent abundances are listed in the following table. What is the relative atomic mass of the element? Isotope Mass (amu) Natural Abundance %) 22x 21.995 75.00 20x 19.996 25.00 #27. (6 points) A nugget of gold with a mass of 521 g is added to 50.0 mL of water. The water level rises to...
1) An analysis indicated that the concentration of mercury in a sample of drinking water was 0.680 parts per billion. What quantity of mercury (g) was present in 15.0 L of the water, the density of which is 0.998 g/ml? A) 6.82 B) 1.72 x 10-8 C) 6.07 x 10-3 D) 1.06 x 10-6 E) 3.45 x 10-4 F) 4.54 x 10-5 G) 1.02 x 10-5 2) Boron has two naturally occurring isotopes, Boron-10 (10.01293 amu), and Boron-11 (11.0093 amu),...
5. How many atoms of nitrogen are in 10 grams of NHINO? a)0.125 b) 2 17.53 x 10 d) 1.51 x 10 1 6.02 x 10 6. The average molar mass of Cu, which has two naturally cecurring isotopes is of the islopes has an atomic weight of 619 amu and makes up e9.1% of lhe custope. The other isotope has an abundance of 30.9% . The atomic weight (am) of the second istice is 63.5 amu. One a 63.2...
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...
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