Is 2h2 O2 2h20 a balanced equation?
Yes, the equation is balanced. There are the same number of Hydrogen (H) and Oxygen (O) atoms on both sides of the equation.
What is the balanced equation for ammonia and oxygen?
NH3+O2–>NO+ H2O.
Which element should you balance last?
hydrogen
How do you read a balanced chemical equation?
Complete answer: -In the balanced chemical equation, the reactants are written on the left side of the chemical reaction and the products are written on the right side of the reaction. -From the balanced chemical equations we can interpret as follows: -Relative masses of the reactants and products.
What are the rules for writing chemical equations?
Writing Chemical Equations
- In a chemical equation, the reactants are written on the left, and the products are written on the right.
- The coefficients next to the symbols of entities indicate the number of moles of a substance produced or used in the chemical reaction.
What is the subscript in math?
Subscripts are those little numbers in the bottom right Sometimes equations may have variables with subscripts (tiny numbers just after the variable).
How do you calculate the number of molecules in an equation?
To count the atoms in a molecule with a coefficient, multiply the coefficient by each subscript in the chemical formula. In the case of 6 CO2, carbon (C) has a subscript of 1. Since 6 X 1 = 6, there are a total of 6 carbon atoms. Oxygen (O) has a subscript of 2.
How do you calculate total atoms?
To calculate the number of atoms in a sample, divide its weight in grams by the amu atomic mass from the periodic table, then multiply the result by Avogadro’s number: 6.02 x 10^23.
How many atoms are in an element?
2.8. Elements can be made of one atom, like He, or be elemental molecules, such as hydrogen (H2), oxygen (O2), chlorine (Cl2), ozone (O3), and sulfur (S8). Atoms are not drawn to scale. Some elements are monatomic, meaning they are made of a single (mon-) atom (-atomic) in their molecular form.