Answer:
Isotopes of an element share the same number of protons but have different numbers of neutrons. Let's use carbon as an example. There are three isotopes of carbon found in nature – carbon-12, carbon-13, and carbon-14. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ.
Explanation:
You must see the mass of Gallium in the periodic table. The mass present there is calculated by a weighted average of the mass of the isotopes, where the weights are the abundances of each isotope. Let X the isotopic abundance of Ga⁷¹. Since there are only Ga⁶⁹ and Ga⁷¹, the isotopic abundance of Ga⁶⁹ is 1-X. Then:
I don't know the options, but probably 40% is the closest to 36.15%.
Answer:
3CaCl₂ + 2Na₃PO₄ → Ca₃(PO₄)₂ + 6NaCl.
Explanation:
- Double replacement reaction is a type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
- The reaction between CaCl₂ and Na₃PO₄ is:
<em>3CaCl₂ + 2Na₃PO₄ → Ca₃(PO₄)₂ + 6NaCl.</em>
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Ca replaces Na in (Na₃PO₄ ) and forming Ca₃(PO₄)₂.
Na replaces Ca in CaCl₂ and forming NaCl.
<em>So, the products of this reaction are Ca₃(PO₄)₂ and NaCl.</em>
The mass of barium occupying 50 cubic centimeters of volume is 181 grams.
Explanation:
Given :
The denisty of barium is
To find;
The mass of a sample of barium that occupies a space of
Solution:
- The mass of barium = M
- The volume of barium = V =
- The density of the barium = D =
The density of the substance is given as:
181 grams is the mass of barium occupying 50 cubic centimeters of volume.
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Answer:in a mass spectrum of BrCl four (4) peaks will be present
Explanation:
Cl and Br both have two naturally occuring isotopes.Br has 79Br which has abundance50.69% and 81Br which has abundance 49.31%.Similarly two isotopes of Cl are 35Cl having abundance 75.77% and 37Cl having abundance 24.23%.Chlorine and bromine combine and form bromine monochloride .Now they can combine with each other in four possible combinations wich are 1(81Br37Cl) 2(81Br35Cl) 3(79Br37Cl) 4(79Br35Cl) .So these four combined isotopes will show four peaks in mass spectrum.