calculate the mass in atomic mass units of 0.25 of carbon-12 atoms? 咋么解啊。急 答案 应该是0.25 mol吧如果是这样 那结果就应该是.25*6.02*(10^23)*12=1.88*10^24相关推荐 1【题目】calculate the mass in atomic mass units of 0.25 of carbon-12 atoms?咋么解啊。急 2calculate the mass in...
aThe element X has three isotopes: X-221, X-220, and X-218, with masses 220.9, 220.0, and 218.1 amu. The relative abundances of these three isotopes are 74.22%, 12.78%, and 13.00%, respectively. Calculate the atomic mass of element X. 元素x有三同位素: X-221, X-220和X-218,与大量...
calculate the atomic mass of potassium given the mass and natural occurrence of each isotope. round your answer to the hundredths place.\table[[isotope,mass (amu),isotopic abundance],[potassium-39,38.96,93.26% calculate the atomic mass of potassium giv...
calculate the atomic mass of thallium.204.43)why is gravitational force in the nucleus so small?Because the nucleus itself is very small, and F=mg, gravitational force is proportional to the mass. 4)could a nucleus of more than one proton but no neutrons exist? explain. No.An atom with ...
calculate the atomic mass of thallium.204.43)why is gravitational force in the nucleus so small?Because the nucleus itself is very small, and F=mg, gravitational force is proportional to the mass. 4)could a nucleus of more than one proton but no neutrons exist? explain. No.An atom with ...
No matter how great or small, every matter has a quantity of its own, called the mass. The sum total quantity of particles inside an atom is known as the atomic mass. Every atom has a specific property that determines its physical and chemical nature; atomic mass is one of those ...
Each element on the periodic table has an atomic mass -- an approximation of the mass of a single atom of that element. Because atoms are so small, a specific unit is used to measure the mass of small quantities of atoms. Very large quantities of atoms a
The total mass of the products and reactants should be calculated first. (atomic mass of Ca=40 , O=16 ,C=12) The atomic mass of CaCO3= 40 + 12 + (3X16) = 100g The atomic mass of CaO = 40 + 16 = 56g The atomic mass of CO2= 12 + (2X16) =...
Use the average atomic masses to calculate the mass in grams of the following sample: $$\text {0.000105 moles of magnesium} $$ Mole Concept: Quantity of given sample can be expressed using terms like moles, mass, volume etc. Mole concept finds i...
23. boron has an average atomic mass of 10.81. one isotope of boron has a mass of 10.012938 and a relative abundance of 19.80 percent. the other isotope has a relative abundance of 80.20 percent.what is the mass of that isotope? report to two decimal places. 11.01 amu using the ...