Answer:
Explanation:
Hello,
In this case, since the density is defined as the ratio of the mass and volume:
We can compute the mass of blood as follows:
Best regards.
Mixing water and sugar is a physical change. A physical change is just a change in the form of the substance, whereas a chemical change is when the substance itself changes… chemically. An easy way to figure out which is which is trying to "undo" the change. If it can be undone, it is physical.
Answer:
pressure of the oxygen gas is 7.88atm
Explanation:
Moles of oxygen in cylinder = 2.80 mol
volume=8.58L
temperature=294K
molar gas constant(R)= 0.0821 L atm / (mol K)
The pressure is calculated using ideal gas law:
PV = nRT
making Pressure subject of the formula
P
=
nRT
/V
=
2.80× 0.0821 ×294 /8.58 L
P = 7.88 atm
The alternative energy source would be a renewable energy source, it would decrease pollution substantially as more and more people would start to use this new energy source. Whether or not it would be more expensive is debatable, but over all improve our environment and quality or our air water etc. hope this helps :)
