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Dafna11 [192]
3 years ago
5

50 One beneficial use of radioisotopes is(1) detection of disease

Chemistry
1 answer:
Alja [10]3 years ago
6 0
The correct answer is (1) detection of disease~
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How many milliliters of a 0.40%(w/v) solution of nalorphine must be injected to obtain a dose of 1.5 mg?
ozzi
The number  of Ml  of  a  0.40 %w/v solution  of   ,nalorphine  that must  be injected  to  obtain  a  dose  of 1.5 mg is  calculated as  below


since M/v%   is  mass  of solute  in  grams per 100  ml

convert Mg to  g
1 g = 1000 mg  what  about  1.5 mg =?  grams
=   1.5 /1000 = 0.0015 grams


volume is therefore =  100 (  mass/ M/v%)

= 100  x(  0.0015/ 0.4) =  0.375  ML
6 0
3 years ago
Cobalt-60 is produced by neutron activation. in this process, one neutron is absorbed by the nucleus of the parent isotope. what
kkurt [141]

The parent isotope is cobalt-59 (see the picture below).

The mass number is 59 and atomic number is 27 of the parent isotope.

Neutron activation is the process in which atomic nucleus capture free neutron or neutrons.

Cobalt-60  is produced in nuclear reactors in process of neutron activation from parent isotope cobalt-59 (see the picture below).

Atomic number (Z) is total number of protons and mass number (A) is total number of protons and neutrons in a nucleus.

Cobalt-59 and cobalt-60 are the isotopes of chemical element cobalt.

Isotopes are chemical elements with same atomic number (Z), but different mass number (different number of neutrons).

More about isotopes: brainly.com/question/364529

#SPJ4

6 0
1 year ago
It didn't have science but the subject is science. A climate with short cool summers and long, bitterly cold winters is the
kvasek [131]
Hey there,

Question : <span>A climate with short cool summers and long, bitterly cold winters is the?

Answer : D, Tundra Climate

Hope this helps :))

<em>~Top♥</em>
</span>
6 0
3 years ago
Read 2 more answers
¿sabes cual es la concentración de azúcar en un refresco de un litro?​
Grace [21]
“Esto quiere decir que en una lata de 330 ml tiene alrededor de 36 gramos de azúcar, mientras que una botella de 1 l tendrá 110 gramos”

110 gramos
8 0
3 years ago
Which of the following best explains what happens when you add ice to a glass of water?(2 points)
-Dominant- [34]

Answer:

Heat energy moves from the water to the ice cubes.

Explanation:

Heat energy moves from the water to the ice cubes, as water is at higher temperature than ice.

8 0
3 years ago
Read 2 more answers
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