(06 05 LC)
What makes the results of a scientific experiment accurate?
Having multiple trials
Lacking any supporting data
Working in a lab
Using a hypothesis that is always true
Help

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

2b2t

explanation:

2b2t

fe 55.85 g/mol and h2o 18.02 g/mol.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter