Answer:
20.5 torr
Explanation:
Given parameters:
Volume of tank = 15L
Pressure of tank = 8.2 x 10⁴torr
Volume of empty chamber = 6.0 x 10⁴L
Unknown:
New pressure of the gas in this chamber = ?
Solution:
To solve this problem, a good knowledge of the gas law will suffice here. Since pressure and volume relationships are under consideration, the Boyle's law is the proper gas law to apply.
Boyle's law states that "at constant temperature, the volume of fixed mass of gas is inversely proportional to the pressure of the gas".
Mathematically;
(Pressure x volume) of tank = (Pressure x volume ) of empty chamber
15 x 8.2 x 10⁴ = Pressure of empty chamber x 6 x 10⁴
Pressure of empty chamber = 20.5 torr
Answer:
4500 cent
Explanation:
From the question, we were told that
a fence 80 meters long requires 30 nails per meter.
1 metre fence = 30 nails
Then 80 meters long= ( 30 × 80)
= 2400 nails
Which means a fence 80 meters long will require 2400 nails in total.
We need to find the cost in dollars for the nails to build a fence 80 meters long.
We know that 40 nails per box will cost 75 cents per box.
(2400 nails/40 nail per box)= 60 box
Then 60 box will be needed to complete the fence.
the cost in dollars for the nails to build a fence 80 meters long= (60 box × 75 cent per box)=4500 cent
12 moles of water H₂O are produced from the combustion of pentane.
Explanation:
We have the following combustion of pentane (C₅H₁₂):
C₅H₁₂ + 8 O₂ → 5 CO₂ + 6 H₂O
Knowing the chemical reaction we devise the following reasoning:
if 1 moles of pentane C₅H₁₂ produces 6 moles of water H₂O
then 2 moles of pentane C₅H₁₂ produces X moles of water H₂O
X = (2 × 6) / 1 = 12 moles of water H₂O
Learn more about:
combustion of organic compounds
brainly.com/question/7295137
brainly.com/question/884053
#learnwithBrainly
Answer:
predict what's going to happen
measure 100 million distilled water into two beakers
measure out 0.3 grams each
dissolve each solid in a separate beakers of water
pour both solutions into one containers
watch mixture change
write a science report
make a presentation and share with peers
