Respuesta :
Answer:
Jordan needs 2.38 grams✔
Step-by-step explanation:
First you add 9.72+3.4=13.12 than you have to subtract 15.5-13.12=2.38 that's how I got my answer
The number of more grams of potassium chlorate does Jordan need is 2.38 grams
Calculation of number of more grams:
Since the science club is 9.72 grams and there are 3.5 grams for home science kit
So, the total is
= 9.72+3.4
=13.12
Now
The number of more grams should be
= 15.5 - 13.12
=2.38
learn more about the potassium here: https://brainly.com/question/2207810