Answer:
Give any two application for isotopes
Isotopes of iodine are used for radiotherapy in treatment of hyperthyroidism, cancer, etc.
Uranium, Radium, Polonium isotopes are used in atomic reactors.
Cobalt isotopes are used for irradiation of food products.
1. The symbol for an isotope of lithium that has a mass of 6 and a charge of +1 is ⁶₃Li⁺
2. If the ratio of the neutron and proton in the nucleus of an atom increases, the nucleus becomes unstable.
3. Allie's hypothesis is correct because atoms B and C have the same atomic number but different neutron numbers, hence, they are isotopes.
4. Rana's hypothesis is wrong because the number of electrons is greater than the number of protons, hence atom C is a negative ion.
5. The symbols are wrong for the following reasons;
- MG is wrong because the symbol of atoms consists of first a capital letter, and then a small letter
- ca is wrong because the symbol of atoms consists of first a capital letter, and then a small letter
- nE is wrong because the symbol of atoms consists of first a capital letter, and then a small letter
<h3>What determines the charge on an atom of an element?</h3>
The charge on an atom of an element is determined by the number of protons and neutrons in the atom.
A neutral atom has an equal number of protons and electrons, a negative atom has more electro than protons, while a positive ion has more protons than electrons.
Isotopes of elements are atoms of the same element having the same number of protons but different numbers of neutrons.
Learn more about isotopes at: brainly.com/question/27198009
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Answer:
981.82g or 0.982 kg
Explanation:
I believe this is Physics, but okay!
We have to use the Specific Heat Capacity formula here.
Heat energy = mass x specific heat capacity x change in temperature
mass = Heat energy/(specific heat capacity x change in temperature)
Heat energy is measured in Joules so we need to find out how to do this.
To find an amount in Joules, we are given 135g and 0.89J/g°C.
135g x 400°C = 54000 to give us g°C
54000 x 0.89 = 48060 By multiplying these two values, we get given 48060J.
This is because: g°C/1 x J/g°C = Joules on it's own
mass = (48060)/[0.89 x (80 - 25)]
mass = 981.82g
Answer:
T-A-A-C-G-A or just TAACGA
Explanation:
A=T
G=C
C=G
T=A
This is the answer key to all complementary <em>DNA</em> strands.
Hope this helps you out.
