6. Indicate whether each of the following statements is true or false, and explain your reasoning?...
all of them please!!!!! 12. What is the volume, in liters, of 12.0 moles of bromine? Bromine is a liquid at room temperature and has a density of 3.12 g/cm 13. Calculate the density of sulfur if you have 9.92x102 atoms in 2.51x10 L? UNITS 14. Calculate the number of hydrogen atoms in 0.252 ML of sulfuric acid. (D=1.02g/mL) 15. Indicate whether the following is true or false. If it is false, correct it to make it true. a. If...
13. Calculate the density of sulfur if you have 9.92x102 atoms in 2.51 x10 L? UNITS!!! 14. Calculate the number of hydrogen atoms in 0.252 ML of sulfuric acid. (D-1.02g/mL) 15. Indicate whether the following is true or false. If it is false, correct it to make it true. a. If you have 1 g samples of different elements, the sample with the smallest molar mass contains the fewest atoms. b. On average, one lithium atom weighs 6.941 amu. Every...
What is the mass, in grams, of each of the following quantities of matter? (a) 0.92 mole of copper atoms g (b) 0.55 mole of nickel atoms g (c) 2.03 moles of nitrogen atoms g (d) 2.24 moles of nitrogen molecules (N2) g How many atoms are present in the following molar quantities of various elements? (a) 1.85 moles Fe atoms Fe (b) 1.95 moles Ni atoms Ni (c) 1.45 moles C atoms C (d) 1.45 moles Ne atoms Ne
Antimony can react with chlorine gas to give antimonytrichloride. _____ Sb(s) + _____ Cl2(g)?_____ SbCl3(l) Which of the following is the best set of stoichiometric coefficients to balance this equation? (a) 1, 1, 1 (b) 1, 3, 2 (c) 4, 6, 4 (d) 2, 3, 2 (iv) The very stable compound SF6 is made by burning sulfur in an atmosphere of fluorine. S8(s) + 24 F2(g)?8 SF6(g) If you need 2.50 moles of SF6, you will need to use (a)...
d. Pb 6-31 Determine the mass, in grams, of each of the following quantities of substance. a. 6.02 x 102 copper atoms SIVULLU Determine the number of moles of substance present in each of the following quantities. a. 10.0 g He b. 10.0 g NO c. 4.0 X 1010 atoms P 1 LII01 II 6-37 Determine the number of grams of sulfur present of the following quantities. a. 3.01 x 1023 S O molecules b. 3 SNA molecules c. 2.00...
What is the mass, in grams, of 1.30 molmol of water, H2OH2O? Learning Goal: Be able to convert to mass from a given number of moles. Completing problems such as this is critical for ensuring your success in chemistry. If you would like to get a head start (and we strongly suggest you do if you want to do well in the course) we have provided you with help to learn this concept in the hints. Hints for this problem...
Please point out whether each of the following statements is correct or not. Carefully explain your reasoning! a) In Aspartic Acid, the carboxylic group bound to the α carbon has more acidic properties than the carboxylic group that is located in the side chain. b) The pI of Ala-Gly-Met is 6.0. c) The peptide Ile-Ala-Pro is more hydrophilic than the peptide Gln-His-Ala. d) The side chain of Amino Acids that make up a protein function as a buffer. thank you...
Indicate whether each of the following statements about magnesium isotopes is true or false. a. ^24_12 Mg has one more proton than ^25_12 Mg. b. ^24_12 Mg and ^25_12 Mg contain the same number of subatomic particles. c. ^24_12 Mg has one less neutron than ^25_12 Mg. d. ^24_12 Mg and ^25_12 Mg have different mass numbers.
True/False Explain. Indicate whether each of the following statements is true or false and then explain why you think this, Include in your explanation any pertinent institutional details and economic reasoning (including appropriate graphs and equations). a. Suppose you are interested in estimating the elasticity of demand for medical care. A good way to do this would be to compare the quantity demanded by people with insurance to the quantity demanded by people who chose not to buy insurance, and...
Chapter 6 1.) How many atoms are in each elemental sample? Part A. 3.3 molCu Part B. 8.7×10−3 mol C Part C. 24.5 mol Hg Part D. 0.300 mol Na 2.) 1 mol 6.022×10^23 Suppose you have 897 sheets of paper. Part D. How many moles of paper do you have? 3.) How many moles of atoms are in each elemental sample? Part A. 1.50 g Zn Part B. 28.9 g Ar Part C. 73.0 g Ta Part D. 2.28×10−2 g...