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If 150 grams of a radioactive isotope are present at 2:00 PM and 10 grams remain at 6:00 PM (the same day), what is the half-life of the isotope? Round to two decimal places.
answered
Sep 28, 2021
Mathematics
high-school
7
votes
151k
views
Which reason best explains why metals are malleable? A. because they have delocalized electrons B. because they have localized electrons C. because they have ionic bonds D. because they have rigid bonds
answered
Sep 25, 2021
Chemistry
college
5
votes
94.0k
views
At the beginning of the current period, Kingbird Corp. had balances in Accounts Receivable of $192,800 and in Allowance for Doubtful Accounts of $8,520 (credit). During the period, it had net credit sales
answered
Sep 23, 2021
Business
college
3
votes
79.3k
views
Can someone make a picture of a eagle,forest,and a soldier please
answered
Aug 23, 2021
Arts
middle-school
2
votes
9.0k
views
Marketing is the art of: buying more/paying more/selling more/talking more
answered
Aug 15, 2021
English
college
3
votes
93.9k
views
Seadrill Engineering licensed software to oil-drilling firms for 5 years. In addition to providing the software, the company also provides consulting services and support to ensure smooth operation of
answered
Jun 26, 2021
Business
high-school
3
votes
171k
views
(6×10^2) ÷ (3×10^-3)
answered
Jun 3, 2021
Mathematics
high-school
3
votes
146k
views
___ is the levying of war against the United States. A. Conspiracy B. Democracy C. Suffrage D. Treason E. Murder
answered
May 16, 2021
History
high-school
3
votes
25.6k
views
Please hurry it’s urgent Consider the food web seen here. One member, the northern spotted owl, lives in cavities of trees in old-growth forests. Old growth forests contain trees that are more than 200
answered
May 10, 2021
Biology
middle-school
0
votes
124k
views
A certain liquid has a normal boiling point of and a boiling point elevation constant . A solution is prepared by dissolving some potassium bromide () in of . This solution boils at . Calculate the mass
answered
Apr 26, 2021
Chemistry
college
3
votes
163k
views
why can planes fly but boats cant and why can boats float but not planes and saying planes fly because of the wind or air is not correct .
answered
Jan 3, 2021
Engineering
high-school
5
votes
95.5k
views
Which of the following is causing widespread concern? As atmospheric oxygen levels decline, the ozone layer is being destroyed. As atmospheric carbon dioxide levels decline, the ozone layer is being destroyed.
answered
Sep 17, 2020
Geography
college
6
votes
215k
views
What are explosives made up of
answered
Jan 6, 2020
Chemistry
middle-school
5
votes
167k
views
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