Answer:
White colors and white surfaces because white surfaces are poor absorbers and good reflectors of heat radiation.
Explanation:
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>!</em><em> </em>❤️
The density of air surrounding the balloon may be calculated by assuming that air is an ideal gas and using the equation,
PV = nRT
In terms of density,
density = PM/RT
Using the given data,
density = (1 atm)(28.84 g/mol)/(0.0821 L.atm/molK)(20+273K) = 1.20 g/L
Using ratio and proportion,
density of balloon = 0.577 g/ V = 1.20 g/L
The volume is equal to 0.48 L.
Venus so that the sun rises in the west
Answer:
The weight of ammonium phosphate is 10 gm
Explanation:
The chemical reaction of ammonium phosphate formation is as follows.
![3NH_{3}+H_{3}PO_{4} \rightarrow [(NH_{4})_{3}PO_{4}]](https://tex.z-dn.net/?f=3NH_%7B3%7D%2BH_%7B3%7DPO_%7B4%7D%20%5Crightarrow%20%5B%28NH_%7B4%7D%29_%7B3%7DPO_%7B4%7D%5D)
From the reaction one mole of phosphoric acid is equivalent to the one mole of ammonium phosphate.
So, "n" mole of phosphoric acid is equivalent to the "n" mole of ammonium phosphate.
Number of moles in 7.1 grams of phosphoric acid = 
<u>Formation weight of ammonium phosphate :</u>
Weight of ammonium phosphate = 
Round the answer to 2 significant digits
Weight of ammonium phosphate = 10 gm
Answer: A degenerate pressure will generate a large force to repel further compression.
Explanation: In the production of new stars from the core of old dying white dwarf stars, the inner parts of the star will experience contraction with the release of heat , as they contract, their atoms will be squeezed such that their electrons start to overlap, and because of the Pauli's exclusive principle which states that no two electrons can occupy same space, the electrons will begin to repel each other and an opposing pressure called degenerate pressure will create a force so that the electrons cannot continually be crushed or overlap. With the limit of contraction, the outer parts of the star will expand and be repelled releasing the old stars called nebula and creating space for the inner new stars to form.
