Answer:
Hailey should add, they are inexpensive to produce.
Explanation:
Reason being why they are inexpensive to produce, is due to them being chemical based and easy to product in the factory setting. Which makes them extremely cheap to make.
Reason being why the others are wrong, synthetic polymers are <u>not</u> biodegradable as they are made in a factory with oils. Synthetic polymers are <u>not</u> flexible due to them being used for harder products. Synthetic polymers are <u>not</u> recycled cheaply as they are made with chemicals which makes it very hard to recycle.
A gravity well is the pull of gravity that a large body in space exerts. The larger the body (the more mass) the more of a gravity well it has. The Sun has a large (or deep) gravity well. Asteroids and small moons have much shallower gravity wells. Anything on a planet or moon is considered to be at the bottom of the gravity well. Entering space from the surface of a planet or moon means climbing out of the gravity well, something that often takes a huge amount of energy. The larger a planet or moon's gravity well is, the more energy it takes to achieve escape velocity and blast a ship off of it.
Answer:
(a) The unit cell edge length <u>0.421 nm</u>
Explanation:
Lets calculate -:
Given -
density = 
Molecular weight of MgO = 24.31 +16
Avagadro number = 
In rock salt structure , there are four anions and four cations , hence Z=4 (Number of formula per unit cell)
Now, using the formula -
![a=[\frac{ZM}{N_Ad}]]^\frac{1}{3}](https://tex.z-dn.net/?f=a%3D%5B%5Cfrac%7BZM%7D%7BN_Ad%7D%5D%5D%5E%5Cfrac%7B1%7D%7B3%7D)
Now, putting the given values
= 0.421 nm
<u>Hence , the unit cell edge length = 0.421 nm </u>
Answer:
Molar volume of gases
One mole of any gas has a volume of 24 dm3 or 24,000 cm3 at rtp (room temperature and pressure). This volume is called the molar volume of a gas.
This equation shows how the volume of gas in dm3 at rtp is related to the number of moles:
volume of gas at rtp = number of moles × 24
Explanation:
hope this will help you
Yes I’m. 80% sure that it’s right
