Answer:
- is reused and recycled
- can dissolve more substances than any other liquid
Explanation:
Earth water is reused and recycles in the form of the water cycle (hydrological cycle). In this cycle, water from the earth surface evaporates in the atmosphere, cool and condense into cloud or snow and fall to the earth surface.
As a universal solvent, water can dissolve more substances than any other liquid. The polar arrangement of oxygen and hydrogen atom in the water molecules makes it excellent salt.
On Earth, ~2.5% is a freshwater whereas 97.5% is salt water. The pH of water differs for surface and salt water, i.e. neutral to alkaline respectively. Water molecules attract to other water molecules better than the other substances. Therefore, other options are incorrect.
Answer:
Molecules vibrate in a fixed position.
Explanation:
first one is just wrong.
third is liquid
fourth is gas
<u>Answer:</u> The molarity of anions in the solution is 0.0316 M
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
We are given:
Given mass of iron (II) chloride = 0.10 g
Molar mass of iron (II) chloride = 126.75 g/mol
Volume of solution = 50 mL
Putting values in above equation, we get:
1 mole of iron (II) chloride produces 1 mole of ions and 2 moles of ions
So, concentration of chloride ions (anions) in the solution =
Hence, the molarity of anions in the solution is 0.0316 M
Answer:
n = 1.48 mol/s
Explanation:
ideal gas:
⇒ n = PV/RT
∴ T = 1.60 E2 °C = 160°C = 433 K
∴ R = 0.082 atm.L/K.mol
∴ P = 49.3 psig * ( atm/ 14.6959psig ) = 3.35 atm
∴ V = 940 L/min
⇒ n = (( 3.35 )*( 940 )) / (( 0.082 )*( 433 ))
⇒ n = 88.813 mol/min * ( min / 60s )
⇒ n = 1.48 mol/s
Answer: repelling magnets
Explanation:
The Maglev track allows the train to float above the track through the use of repelling magnets. ... This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust