1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
quester [9]
3 years ago
9

Suppose a laboratory has a 30 g sample of polonium-210. The half-life of polonium-210 is about 138 days How many half-lives of p

olonium-210 occur in 1104 days? How much polonium is in the sample 1104 days later?
Mathematics
2 answers:
Flauer [41]3 years ago
6 0

the simplified answer is 0.12 g

steposvetlana [31]3 years ago
5 0
This is an easy half-life calculation because it involves an exact integer of half-lives.  1,104 days is precisely 8 half-lives.  After each half-life, one half of the original remains.
So, after 8 half-lives you will have 1 / 2^8 of the original material left.
So we start with 30 grams and 1 / 2^8 = <span> <span> <span> 0.00390625</span></span></span>.
We are therefore left with (30 * <span> <span> <span> 0.00390625) or </span></span></span> <span> <span> <span> 0.1171875 grams of the original 30 grams of polonium.   </span> </span> </span>


You might be interested in
Find the value of x when 6-4x =7x-9x-6
Ivenika [448]
X=6
Isolate the variable by dividing each side by factors that don’t contain variable
3 0
3 years ago
Cuanto es menos 7 mas 2
irina [24]

Answer:

the answer is -5. you could really just use a calculator this is pretty basic math.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A similarity ratio is the ratio of the lengths
kow [346]
Similarity ratio is a ratio of two figures having the same side.

Ratio can be rate but rate can never be ratio. In essence, rate is comparison between ratios.  While ratio is comparison between two or more numbers. Further, ratio on one hand, involves numbers either in amount, size, measurement, degrees, percentages or fractions with the absence of specific unit of measurement. On the contrary, rate is comparing quantities, amounts or unit of events happened expressed in a specific measurement or expressed under time. Take for instance, an example, Joe eats 2 while John eats 4 meals in a day. The ratio can be Joe: John, 2:4 meals. While the rate, is Joe eats 2 meals/day and John 4 meals/day.<span>
</span>
7 0
3 years ago
I need help finding the slope​
Scilla [17]

Answer:

The answer is ✰ 4 ✰

Step-by-step explanation:

:))

8 0
2 years ago
PLZ ANSWER
Veronika [31]
Range
Because it has the biggest difference between the two sets (14 in set 1 and 57 in set 2) so the outlier (the value 63 in set 2) affected it the most
3 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the area of a circle with a radius of 2 cm and a circle with a radius of 4 cm. Leave your answers in terms of pi.
    10·1 answer
  • Three single-serve bags of chips cost 0.99 at this rate how much do 5 bags cost
    12·2 answers
  • Juan bought 6 CDs that were each the same price. Including sales tax, he paid a total of $103.80. Of that total, $6.60 was
    13·1 answer
  • In ms Lacee`s class there are 28 student desks.Each desk measures 26.17 inches long.If you were to line up all the desks end to
    9·1 answer
  • A participant in a 21-mile walkathon walks at a steady rate of 3 per hours. He thinks, "the relationship between the number of m
    8·1 answer
  • How do economists measure a nation's standard of living
    14·1 answer
  • A streetlight that is 8 feet tall casts a 3-foot-long shadow. A nearby flagpole casts a 15-foot-long shadow. What is the height
    15·2 answers
  • Write the equation of the line on the graph below.
    11·2 answers
  • Need help and explain please!!
    11·1 answer
  • Fill in the blank for this graph.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!