Help i have a test coming up

1mole of propane weighs

12g×3+1g×8

36g+8g

44g

6.023×10²³44g

5.83×10¹⁷x

5.83×10¹⁷×44g=x×6.023×10²³

(256.52×10¹⁷g)÷6.023×10²³=x

x=42.59×10¹⁷‐²³

x=4.26×10-⁶×10

x=4.26×10-⁵

answer

4. 4.27×10-⁵

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.