Under ideal conditions, a projectile with a given initial speed ...

[silviawilliams41]

Under ideal conditions, a projectile with a given initial speed at an angle of 15 has the same range as a projectile at an angle of ______________ with the same initial speed.
 Fill in the blank(s) with correct word

Question 2

In order, from top to bottom, in the activity series come K, Zn, Pb, H, Cu, and Au. Therefore,
 a. adding Pb to ZnCl2 will release Zn.
  b. adding Cu to HCl will release hydrogen.
  c. adding Au to HCl will release hydrogen.
  d. adding Cu to AuCl3 will release Au.

[harveenkau8139]

Answer to Question 1

75

Answer to Question 2

d

[silviawilliams41]

Excellent

[Kedrick2014]

Gracias!