# Thread: Chemistry PPM

1. ## Chemistry PPM

.....The maximum amount of nitrate ion is 10ppm for infants.

a) if an infant has 4.0Kg weight, how much of nitrate ion can he consume?

This is what I did:

Mass of Nitrate = 4.0kg * 10mg/1kg
= 40mg

10mg/1kg is equivilant to 10 ppm as i believe.

Any help is really appreciated! I have no idea what to do because I had a supply teacher today that did not teach this to us, and yes I will ask my teacher for help tomorrow.

2. ## Re: Chemistry PPM

Originally Posted by sakonpure6
.....The maximum amount of nitrate ion is 10ppm for infants.

a) if an infant has 4.0Kg weight, how much of nitrate ion can he consume?

This is what I did:

Mass of Nitrate = 4.0kg * 10mg/1kg
= 40mg

10mg/1kg is equivilant to 10 ppm as i believe.

Any help is really appreciated! I have no idea what to do because I had a supply teacher today that did not teach this to us, and yes I will ask my teacher for help tomorrow.
Looks good to me.

-Dan

3. ## Re: Chemistry PPM

Since the calculation is based on mass I believe you are correct in assuming mg/kg = ppm

4. ## Re: Chemistry PPM

Originally Posted by sakonpure6
.....The maximum amount of nitrate ion is 10ppm for infants.

a) if an infant has 4.0Kg weight, how much of nitrate ion can he consume?

This is what I did:

Mass of Nitrate = 4.0kg * 10mg/1kg
= 40mg

10mg/1kg is equivilant to 10 ppm as i believe.

Any help is really appreciated! I have no idea what to do because I had a supply teacher today that did not teach this to us, and yes I will ask my teacher for help tomorrow.
If the allowance is 10mg per kg weightper day then the infant can consume 40 mg per day