70 year old man has a 3-month history of progressive weakness and a weight loss of 13 kg along with intermittent fever , chills and chronic cough productive of yellow sputum occasionally streaked with blood. A sputum specimen is obtained and numerous acid-fast bacteria are seen on the smear . 1. Which organism wold mont likely to Cause this syndrome?
2. Which vaccine is given against disease?
3. How can you catch the discase?

given:

mass of na = 115 g

excess cl2

to determine:

mass of nacl produced

explanation:

given reaction is-

2na(s) + cl2(g) → 2nacl(s)

since cl2 is in excess, na will be the limiting reagent

as per the reaction stoichiometry na: nacl = 1: 1

i.e. moles of na reacted = moles of nacl formed

now, # moles of na = mass of na/atomic mass

                                  = 115 g/23 g.mol-1 = 5 moles

therefore, moles of nacl = 5

molar mass of nacl = 58 g/mol

mass of nacl = 5 moles * 58 g.mol-1 = 290 g

ans: amount of nacl produced = 290 g

the answer is b i did that and i got it right