The isotope with 29 protons and 35 neutrons is called copper-65. Chemists often write out isotopes using a notation involving the chemical symbol, atomic number, and mass number, as shown in Figure 4.16. Cu-65。同位素标记也可按图4.16中的方法表示。 Natural abundance of isotopes 同位素的自然丰度...
How would you write the formula for Dinitrogen Pentoxide? How can I differentiate between ionic and covalent compounds? Convert 36,098,000 to scientific notation. How do you complete the following calculation representing the answer in scientific notation and with the correct number of significant fig...
How to determine the rate of decay? How many years would it take for an isotope to be completely non-reactive if the isotope had a half life of 200 years? How would you figure this problem when you are not given a starting amount of sub ...
If you have a sugar with a molecular weight of 315 g/mol, how many grams would you need to add to 487 mL of water to create a 262 mM solution? If you have a sugar with a molecular weight of 315 g/mol, how many grams would you need to add to 478 mL of water...
Why do hydrogen ions have to bond with hydroxide ions? Can't they bond with something else with the same valence electron need? If a proton and electron are removed, can the element itself change? How do you write a compound which contains calcium (Ca) ...
Updated to write a file in either ClustalW ALN format (default) or MSF format. Protein Analysis Functions Following is a new function: • isotopicdist — Calculate high-resolution isotope mass distribution and density function. The following function is updated: • cleave — Cleave amino acid...
(severe bipolar disorder most probably), and with a profound inability to keep his temper in check. on the plus side of the ledger: he could stand before a blackboard and write a mathematical theory on it with his right hand on the right side, and simultaneously write its solution with ...
If you have a random thing you can talk about it as a “random variable”. For example, you could say a 6-side die is represented by X. Then the probability that X=4 (or any number from 1 to 6) is 1/6. You’d write ...
Argon was difficult to discover and was suspected, but not proven, to exist by Henry Cavendish in 1785. It was another 100 years, in 1894, when it was first isolated and truly identified by British scientists, Lord Rayleigh and William Ramsay....
Explain how to find which method of depreciation is to be used based on the asset. Translate: The sum of a number and six is at least twelve. How many years would it take for an isotope to be completely non-reactive if the isotope had a half life of 200 years? How would you figure...