There are 4 half lives of radium-226 in 6396 years. 15.0 divided by half 4 times (15.0/2= 7.5, 7.5/2 = 3.75, 3.75/2 = 1.875) equals 1.875 mg of radium-226.
A.) independent variable.
the control was or would be the plant at the window. the dependent is the growth of each plant. the constant is the amount of water
If this is meters, then it’d be 1310.
1km = 1000m
.31 x 1000 = 310
So, 1000 + 310 = 1310m
Answer:
Sodium chloride, on the other hand, contains ions; it is an ionic compound. CaO is correct.
Explanation:
