Answer:
PBr5 is the formula of phosphorus pentabromide.
hope it helps!
In a bag of peas that weighs 454 grams, there are between 1261 and 4540 peas.
The average pea weighs between 0.1 and 0.36 grams.
If we take the lower value (0.1 g/pea), the number of peas in 454 g is:

If we take the higher value (0.36 g/pea), the number of peas in 454 g is:

In a bag of peas that weighs 454 grams, there are between 1261 and 4540 peas.
You can learn more about conversion factors here: brainly.com/question/1844638
To make a first step you have to know the balanced form for neutralization formula:

According to this, you can <span>calculate what you are being asked :</span>

Then we have :

Hope everything is clear, here is the exact answer you need :