Science! i put math n didnt mean to
1. which equation is balanced?

a) 2na + o → na₂o
b) 4na + o₂ → 2na₂o

a?
b?
a and b?
neither equation is balanced

2 which equation is balanced?

a) 4h₂ + cl₂ > 2hcl
b) h₂ + cl₂ > 2hci

a?
b?
a and b?
neither?

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables