How long will it take for 25% of the C-14 atoms in a sample of C-14 to decay?
for this one the answer is t=2400
If a sample of C-14 initially contains 1.6 mmol of C-14, how many millimoles will be left after 2225 years?
I don’t understand how to solve this.
how many licks does it take to get to the center of a tuts pop
how many licks does it take to get to the center of a tootsie roll?
How many lemons batteries would it take to start a car?
Note: All numbers must be entered as 5000 or 5e3 or 5.0e3 and not with commas as in “5,000” and not as fractions as in “3/4” and not as percentages as in “70%”.
Please explain/break down these problems for me so that I can practice on other similar problems.
how many Japanese yen does one US dollar buy right now? Find the current foreign exchange rate for the yen in the Wall Street Journal or, if you are using Internet sources, on the Bloomberg, WSJ, Yahoo Financial or another financial information site. Investigate the foreign exchange rate for the yen against the dollar over the past month. Is the dollar growing stronger( buying more yen) or growing weaker (buying fewer yen)? What does this mean for American companies and consumers?
How many isomeric dichloro products can be obtained from the chlorination of cyclopropane? I’m not sure how to
begin this problem, should we be performing a substitution reaction or drawing out the molecules? The answer is 3.
how many information system staff members do you think reliable can reasonably afford to employ? What mix of skills would they require? How flexible would they have to be in terms f work they do each day?
Part A
0.577 L of a 0.400 MK2CO3 solution
Express your answer with the appropriate units.
m
=
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Part B
18.0 mL of a 1.00 M AgNO3 solution
Express your answer with the appropriate units.
m
=
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Part C
29.8 mL of a 5.00 MH3PO4 solution
Express your answer with the appropriate units.
m
=
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phosphorus (P4) s + chlorine ( g ) —> phosphorus trichloride l
phosphorus (P4)
2-
oxygen gas26.1mercury(II) oxide
mercury(II) oxidesmercuryl+ oxygen(g)
oxygen gas
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