Answer:The process is known as sublimation
Explanation:
Sublimation is a process wherby solid substances are changed into gaseous state
Answer: -
37.5 g of NaCl are in 250 g of a 15.0% (by weight) solution.
Explanation: -
Total mass = 250 g
Percentage of NaCl = 15.0 %
= ![\frac{Number of grams of NaCl present}{total mass}](https://tex.z-dn.net/?f=%20%5Cfrac%7BNumber%20of%20grams%20of%20NaCl%20present%7D%7Btotal%20mass%7D%20%20)
Thus
= ![\frac{Number of grams of NaCl present}{250g}](https://tex.z-dn.net/?f=%20%5Cfrac%7BNumber%20of%20grams%20of%20NaCl%20present%7D%7B250g%7D%20%20)
Number of grams of NaCl present = ![\frac{15 x 250g}{100}](https://tex.z-dn.net/?f=%20%5Cfrac%7B15%20x%20250g%7D%7B100%7D%20%20)
= 37.5 g
According to Avagadros law 1 mole of a substance contains 6.02 × 10^23 particles.
Thus, 1 mole of C6H14 contains 6.02 × 10^ 23 molecules,
Therefore, 9.25 × 10^24 molecules will have;
(9.25 × 10^24)/ (6.02 ×10^23)
= 15.365 moles.
When sunlight hits the moon's surface, the temperature can reach 260 degrees Fahrenheit (127 degrees Celsius). When the sun goes down, temperatures can dip to minus 280 F (minus 173 C).