more reactive metals:
potassium (highest reactivity)
sodium
calcium
magnesium
moderate reactive metals:
aluminium
zinc
iron
lead
least reactive metals:
copper
mercury
silver
gold (least reactivity)
The answer is C: "<span>A body cell has 46 chromosomes; a sex cell has 23"</span>
Explanation:
This medication is used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations (e.g., diaper rash, skin burns from radiation therapy). Emollients are substances that soften and moisturize the skin and decrease itching and flaking.
Answer:
1 g
Explanation:
The half-life of Am-242 (16 h) is the time it takes for half of it to disappear.
We can make a table of the mass left after each half-life.

The mass remaining after 48 h is 1 g.
Answer:
I'm pretty sure that's right.
Explanation: