You have solution made of 30g NH3 in 70g H2O. the Density is .982 g/mL. What is Molarity and molality?

For molality I did1.76mol NH3 / .07kg H2O and got 25.3m (is this right)
and for Molality do you combine the grams and divide by .102L (found by doing 100g solution divide by density to get mL then converting to L) and...and for some reason I can't figure out what to do next haha...do you use 1mol as a basis to get Molarity?

Question

You have solution made of 30g NH3 in 70g H2O. the Density is .982 g/mL. What is Molarity and molality?

For molality I did1.76mol NH3 / .07kg H2O and got 25.3m (is this right)
and for Molality do you combine the grams and divide by .102L (found by doing 100g solution divide by density to get mL then converting to L) and...and for some reason I can't figure out what to do next haha...do you use 1mol as a basis to get Molarity?

anonymous · Answer

@TheSmartOne @Compassionate  Can you help at all?

anonymous · Answer

@paki Do you know?

anonymous · Answer

I can hardly remember this but Im pretty sure you do.. Id get another to back my answer up though.. Im almost certain 1mol can be used to get Molarity

anonymous · Answer

Thanks @rarecigs!