64. Yes p, because the elements are the same and they have the same number of…
Questions Answer in complete sentences SHOW ALL MATH FOR CREDIT! INCLUDE UNITS & SIG FIGS IN ALL ANSWERS! 1. Write the balanced equation for the reaction. Include (states). 2. Calculate the mass of zinc found in the penny. 3. Calculate the mass of copper in the penny. 4.…
Introduction: The weight of a post 1982 penny is 2.5 grams, and the percent of zinc is 97.5% leaving only 2.5% copper. The amount of Zinc in a post 1982 penny is 2.437 grams, and the amount of copper is 0.062 grams. Along with all of this we must know the amount of moles of each. To find the amount of moles we must solve for them:…
_____ 9. The atomic number of carbon is 6. If an isotope of carbon has a mass number of 13, how many protons does it have?…
|element to 12C isotope. | |Explain that atomic masses are relative to | | |…
The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this, the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the molecular weight of the sample averaged out to 201.1mw. In conclusion, the unknown compound of pure copper salt was close to Cu(C2H3O2)2 •H2O which has a percent copper of 31.8% and a molecular weight of 199.654mw.…
What is the mass of 0.75 moles of CuSO4 ? 9. How many atoms does 2.0 moles of He represent? 10. How many sodium ions are in 3.0 moles of NaCl?…
b) 1.67 x 10-2 moles x 6.02x1023 molecule x 1 atom = 1.01 x 1022 atoms of copper produced…
1. What is an isotope? 2. What does the number next to isotopes signify? 3. How can you tell isotopes apart? For each of the following isotopes, write the number of protons, neutrons, and electrons. Chromium-58 Chromium-63 # of protons # of neutrons # of electrons # of protons # of neutrons # of electrons Carbon-12 Carbon-16…
A-the main difference between copper atoms and copper ions are that copper atoms don’t have a charge but copper ions do…
Calculate the moles of copper, this is the mass of copper (in g) divided by the atomic mass of copper, (63.5 g/mol)…
8. The _____________ of an element is the average mass of an element’s naturally occurring atoms and isotopes. 9. The _____________________ of an element is the total number of protons and neutrons in the ___________________ of the atom. 10. The mass number is used to calculate the number of ____________ in one atom of an element. In order to calculate the number of neutrons you must subtract the _________________ from the _____________________. 11. Give the symbol of and the number of protons, electrons and neutrons in one atom of:…
Nucleon, Inc. is one of over 200 firms founded since the 1970s which are focused on developing biotechnological pharmaceuticals products. Biotechnology came about with the development in advances of molecular biology and immunology, hence the new field of R&D is called “biotechnology”. Nucleons first product is CRP-1 (cell regulation ein-1) and after several years of experimentation the time was ready for human clinical trials, which was not going to be an easy hurdle to get over. Due to the fact that Nucleon did not have any manufacturing facilities which met the FDA requirements they had to figure out how to jump over the hurdles presented. One potion was to contract clinical manufacturing to an outside firm. Another option was to build a new pilot plant for clinical trials. Nucleons third option is to license the manufacturing to another biotechnology company. Risk was found in their options but they also came with rewards. If Nucleon could establish a strong paten on a important molecule this could ensure capital for growth and development which could keep Nucleon alive for years.…
This was a hobby that David decided to take up and began finding tons of information relating to this topic. David found out different elements that are characterized further by the protons that are in their nuclei. Some examples of the way these elements are characterized are Carbon, Neon, and Sodium. Carbon contains six protons, therefore, the atomic number is six. Same with Neon and Sodium; Neon has ten protons and Sodium has eleven. Furthermore, Neon's atomic number is ten and Sodium's atomic number is eleven. He furthered in his research on this topic and learned that the atomic weight(atomic mass) is calculated by knowing the number of protons and neutrons put together.…
In this experiment I will be discovering the atomic weight of Candium isotopes. By doing this experiment, it helps us to know how to calculate the relative abundance and atomic mass of each Candium isotopes without having to use the spectrometer. This lab will achieve my understanding of isotopes and why it has different masses but same number of protons due to different numbers of neutrons in the nuclei. From this lab, I expect that we will be able to separate the candy, and be able to find the atomic mass by weighing the candy and finding the mass of it.…