An element is a substance that can't be broken down further. Lithium (Li) and calcium (Ca) are examples of elements.
Carbon monoxide (CO) and potassium bromide (KBr) are examples of compounds, which are made up of more than one element put together.
Answer:
Cold
Explanation:
Because 0°C And below or 32°F Refers To Cold Weather
Answer:
1 cal = 0.004187 kJ
1,500,000 cal = 6280.5 kJ
First, we will get the "n", the number of half lives, it is the elapsed time over the half life. In the problem, the time is measured in days, so we have
6/2 = 3
to get the ending amount of radioactive sample, we have
32g x (1/2)³ = 4 grams of radioactive sample ⇒ the amount left after 6 days
Answer:
a small medical thermometer with a short but finely calibrated range, for taking a person's temperature.
