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 many days in a lunar year? A car has an initial value of $26,000 and depreciates by 20% every year. Write an equation to demonstrate this. How do you put tan5=b/2 in a calculator? How does someone calculate the percentage of something?
Write the complete electron configuration for the argon atom. Is Argon classified as a metal or as a non-metal? How is calcium manufactured? What are noble gases used for? How many valence electrons are in a neutral atom of argon?
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 ...
Write your responses in scientific notation. What is the basic unit of matter? what is the mass in grams of 1.03 kg 1105g and 1075000mg 1. Items weigh 25 grams and take up 3.5 mL of volume ___ If you weighed a bottle of water and found the water to weigh 1500 gr...