How much Cu-64 (half-life about 12 hours) would remain from a 2 mg sample after 12 hours?

2. you__turn left on a red light if you are in the left-most lane of a one-way street, you're turning into the left-most lane of a one-way street, and no nearby sign prohibits the turn.

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Which best describes how johannes kepler developed his laws of planetary motion