Answer:
24.24 g
Explanation:
First we <u>calculate how many moles are there in 300 mL of a 0.234 M solution</u>, using the <em>definition of molarity</em>:
- Molarity = moles / liters
Converting 300 mL to L ⇒ 300 mL / 1000 = 0.300 L
- 0.234 M = moles / 0.300 L
Then we <u>convert 0.78 moles of NH₄F into grams</u>, using its <em>molar mass</em>:
- 0.78 mol * 31.073 g/mol = 24.24 g
卂几丂山乇尺
Point "C" is correct and all the remaining are false.
Note, HomeAtomic and HeteroAtomic compounds are the types of compounds, but not homogenous and heterogenous.
The answer is Sliver reacts with nitric acid to produce a gas.
The solution for this problem is:
Let x = speed of wind
Speed of plane with the wind = x + 100
Speed of plane against the wind = 100 -x
We will be using the formula for distance which is (Rate)(Time), getting the formula for time would be distance/rate Time to travel 600 miles with the wind = Time to travel 400 miles against the wind 600/(x + 100) = 400/(100 - x)
400(x + 100) = 600(100 - x)
400x + 40000 = 60000 - 600x
1000x = 20000
x = 20000/1000
x = 20 mph