If a chemical symbol has a subscript associated with it, there are multiple atoms of that element in the compound. Unless they are part of a polyatomic ion, each atom of that element is an individual ion. For example, iron (III) sulfate is written Fe2(SO4)3. The +3 oxidation state of...
The chemical formula of a compound is X2Y3. If there are 12 atoms of Y, how many atoms of X are there? A. 6 atoms B. 8 atoms C. 10 atoms D. 12 atoms 相关知识点: 试题来源: 解析 B。由化学式 X2Y3 可知,X 和 Y 的原子个数比为 2:3,Y 有 12 个原子,设 X 有 x 个原子...
Two oxides of a metal contain 27.6% and 30% of oxygen respectively. If the formula of the first oxide is MO, find that of the second? Now my problem is how to find the atoms of O from the masses of 27.6% and 30.0 %? How to get atoms of something having % of mass? I am conf...
Molecules form when two or more atoms join together chemically to create a new substance. In some cases, the two or more atoms will be of the same element. Other times, the atoms will be from two or more different elements to form a special kind of molecule called a compound. ...
The formula for a compound in which the number of different constituent atoms is represented by a simplest whole-number ratio is called the empirical formula for the compound.Answer and Explanation: Become a Study.com member to unlock this answer! Create your account View...
compound. Information regarding theactualnumber of atoms of an element present in a compound is provided by its molecular formula. To determine the molecular formula of a compound, multiply the subscripts of each element in the empirical formula by the ratio of molecular weight to empirical formula...
ElementSymbolAtomsMass % Hydrogen H 1 2.8% Chlorine Cl 1 97.2%Determining Empirical Formula The typical procedure to determine the empirical formula of a mystery compound is to analyze it for its component elements. If you obtain the weight of each element in the compound, you can determine the...
Multiply the element's atomic number by the number of atoms of this type (see Step 1) in the molecule. Repeat for all elements in the molecule, then add up all the products to calculate the number of electrons. In the first example, the number of electrons in KNO3 equals (19 x 1) ...
To find how much a certain number of atoms weigh in atomic mass units, multiply the atomic mass by the number of atoms. Note you will usually be doing this for very large numbers of atoms, and will need a calculator. Say you're given a problem to find the mass of 6.7 x 10^4 carb...
How is the mass of an element related to the number of atoms present i... 01:34 Which does have more atoms, 1.0 g of hydrogen or 1.0 g of oxygen ? 03:17 How is the molecular formula of a compound related to its empirical fo... 04:47 What do you understand by a balanced chemic...