137 g of barium reacts with g iodine to produce 391 g barium iodide
group of answer choices

391

254

534

137

Option (b) is the correct answer.

Explanation:

According to law of conservation of mass, mass can neither be created nor it can be destroyed. It can only be changed from one form to another.

For example,  when 137 g of barium reacts with x grams of iodine to produce 391 g barium iodide.

Then mass of iodine will be calculated as follows.

               Total mass of reactants = total mass of products

                          137 g + x = 391 g

                             x = 391 g - 137 g

                                = 254 g

Thus, we can conclude that 137 g of barium reacts with 254 g iodine to produce 391 g barium iodide.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer