What is the chemical symbol for carbon?A) CaB) CoC) CrD) C 相关知识点: 试题来源: 解析D) C题目询问碳的化学符号,需从选项中选出正确答案。分析如下:- **选项A(Ca)**:Ca是钙(Calcium)的化学符号,与碳无关。- **选项B(Co)**:Co是钴(Cobalt)的化学符号,与碳无关。- **选项C(Cr)**:Cr...
Which chemical element has the symbol Pb? What is the symbol for the element with atomic number 74? What chemical element is U? What is the chemical symbol of boron? What letter starts the most chemical element symbols? What is the chemical symbol for calcium in the periodic table of eleme...
What is lactose's chemical formula? What chemical element is in coffee? What are some examples of chemical elements? What is the chemical symbol for calcium in the periodic table of elements? What chemical element is found in popcorn?
D-calcium pantothenate known as pantothenic acid, is a typical nutritional fortification substance of the B-complex vitamins that can participate the basic metabolism and the synthesis of fatty acids of body.
Calcium folinate is a medication used to reduce the toxic side effects caused by high doses of methotrexate. Calcium folinate is also referred to as leucovorin calcium or folinic acid. Use Calcium Folinate is mainly used for colorectal cancer treatment in association with 5-fluorouracil and ...
A. Calcium, magnesium, and sulfur B. Nitrogen, phosphorus, and potassium C. Iron, zinc, and copper D. Oxygen, hydrogen, and carbon 相关知识点: 试题来源: 解析 B。解析:文章中明确提到 Chemical fertilizers contain nitrogen, phosphorus, and potassium。反馈...
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1. A monatomic ion with a charge of +2 has an electronic configuration of 1s^2 2s^22p^63s^23p^64s^23d^{10}4p^6. This ion is a(n) {Blank}.\2. What is the chemical symbol of the noble gas this ion is isoelectronic...
This technique has been practised by experts ever since Mikhail Tswett found it in the year 1903. He only applied it to separate out different coloured pigments from plants with the support of a calcium carbonate column. However, chromatography proved effective for several components later on. It...
For example, Ca2+is the symbol for a calcium ion that has a positive 2 charge. Since the atomic number of calcium is 20 and the charge is positive, this means the ion has 20 - 2 or 18 electrons. Chemical Elements To be an element, a substance has to at least have protons, since ...