A white salt containing an unknown metal has the formula MCl and gives a lilac flame during a flame test. the salt could be NaCl
B:
MgCl
C:
KCl
D:
LiCl

C

Explanation:

KCl - the flame test for Potassium produces a lilac flame

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.