The formula for molality---> m = moles solute/ Kg of solvent
the solute here is NH₃ because it's the one with less amount. which makes water the solvent.
1) let's convert the grams of NH₃ to moles using the molar mass
molar mass of NH₃= 14.0 + (3 x 1.01)= 17.03 g/ mol
15.0 g (1 mol/ 17.03 g)= 0.881 mol NH₃
2) let's convert the grams of water into kilograms (just divide by 1000)
250.0 g= 0.2500 kg
3) let's plug in the values into the molality formula
molality= mol/ Kg---> 0.881 mol/ 0.2500 kg= 3.52 m
Answer:
opinion b
Explanation:
the product of neutralization reaction between hcl and CA(oh)2 is option b.
The correct answer is <span>ball-and-stick model I just take it</span>
In binary ionic compounds the name of the cation (Metal) is first, so that’s how you know.
Answer:
a. because it is an element
Explanation:
its pure because it only has one type of atom, making it an element
