How many grams are in 1.40 moles of sodium chloride (nacl)?

The molar mass of NaCl is 58.44 g / mol. So we can calculate the mass by simply multiplying the number of moles and molar mass. That is:

mass = 1.40 moles * 58.44 g / mol

mass = 81.82 grams

arithmetic sequence

step-by-step explanation:

given that a sequence has terms as

19, 15, 11,

this is represented on a graph

the pattern indicates that the sequence is an arithmetic sequence with i term

a=19 and common difference d =-4

any general term

thus the sequence is reduced by 4 for each successive term starting from 1 and nth term is

24-5n.

first negative term would start after 5th term

5th term =24-25< 0

from 5th term onwards the sequence would be negative.