β⁻ emission is an
emission of an electron from the parent atom while converting a neutron into a
proton.<span> Hence, the formed daughter nucleus has the same
number of mass but the atomic number is higher by 1 and number of neutrons is
lower by one than the parent atom.</span><span>
After a β⁻<span> emission of ¹⁰⁶Ru, the formed daughter nucleus
should have 106 as mass number but (44 + 1) = 45 </span>as the atomic number. </span><span>
<span>Hence the daughter nucleus is </span>Rh<span> (</span>Rhodium<span>) which has </span>45<span> protons
(atomic number).</span></span>
B. The lines show where a phase change happens to a substance
Your question can be found online! Just draw one of these diagrams
Answer:
1.3M
Explanation:
Convert from grams to moles:
molar mass of HCl = 1.01g(molar mass of H) + 35.45g(molar mass of Cl) = 36.46g HCl
1.2g HCl (1mol HCl/36.46g HCl)
= .0329 mol HCl
Molarity = mol/L (important formula for concentration)
Plug your values in:
Molarity = .0329mol/.025L
1.317M - but you used two significant figures in the question, so:
1.3M
Answer:
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