Answer:
Mass of the resulting strontium fluoride precipitate = 34.51 g
Step-by-step explanation:
First, write a correctly balanced equation for the reaction taking place:
Sr(NO3)2(aq) + 2NaF(aq) ===> SrF2(s) + 2NaNO3(aq)
Next, Find the limiting reactant:
moles Sr(NO3)2 present = 0.150 L x 2.671 mol/L = 0.40065 moles
moles NaF = 0.210 L x 2.617 mol/L = 0.54957 moles
LIMITING REACTANT = NaF
because you need twice the moles of NaF as you have Sr(NO3)2 (see bal. eq.)
Mass SrF2 producedb =
0.54957 mol NaF x 1 mol SrF2 / 2 mol NaF x 125.6 g/mol = 34.51 g SrF2 produced
Answer: Nobody knows the trouble ive seen
Step-by-step explanation:
Answer:
regular
Step-by-step explanation:
1. look at table
- notice regular and prevent defense have different wins but same total.
- 2. wins have more for regular so that's your answer
Lara ran 3/4 so
3/4 = 6/8
Lara walked 3/8
Find the diffrence:
6/8 -3/8 =3/8
So she run 3/8 mile farther than walk
The lowest elevation in New Mexico is 2,842 feet and the lowest in California is -282 feet ( negative because its below sea level.)
Then just:
2,842 - (-282) = 3,124 ft.