The numbers placed in front of formulas to balance equations are called coefficients, and they multiply all the atoms in a formula. Thus, the symbol “2 NaHCO3” indicates two units of sodium bicarbonate, which contain 2 Na atoms, 2 H atoms, 2 C atoms, and 6 O atoms (2 X 3= 6, the coefficient times the subscript for O).

At the present, there are 2 oxygen atoms on the reactant side. The remaining oxygen atoms will be accounted to the molecular oxygen. The above equation is the balanced chemical equation. The coefficient of oxygen is 5.

In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal.

Write down how many atoms of each element there are on each side of the reaction arrow. Add coefficients (the numbers in front of the formulas) so the number of atoms of each element is the same on both sides of the equation. It’s easiest to balance the hydrogen and oxygen atoms last.

You can balance equations by using a method called balancing by inspection. You take each atom in turn and balance it by adding appropriate coefficients to one side or the other. In most cases, it’s a good idea to wait until the end to balance hydrogen atoms and oxygen atoms; balance the other atoms first.

When you balance a chemical equation, you change coefficients. You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation, you add these whole number multipliers (coefficients) to make sure that there are the same number of atoms on each side of the arrow.

The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation. Law of conservation of mass governs the balancing of a chemical equation.

Answer. 1) it tell us about the number of molecules of reactant of products. 2) it tell us the number of moles of reactant and product. 3) it tells us about the mass ratio of reactant and product.

A balanced chemical is equation has equal numbers of atoms for each element involved in the reaction are represented on the reactant and product sides. This is a requirement the equation must satisfy to be consistent with the law of conservation of matter.

If the number of atoms of each element in reactants is not equal to the number of atoms of each element present in product, then the chemical equation is called unbalanced chemical equation.

skeletal equation

A: All chemical equations must be balanced. This means that there must be the same number of each type of atom on both sides of the arrow. There are two hydrogen atoms in both reactants and products.

Unbalanced chemical equation is called skeletal equation. Law of conservation governs the balancing of a chemical equation. It states that the mass of the reactants is equal to the mass of products.

Number of atoms is equal on both sides of the equation. Number of atoms is less on the left side of the equation. Number of atoms is more on the right side of the equation.

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side. The first chemical equation was diagrammed by Jean Beguin in 1615.

forces: forces applied to an object in opposite directions that are not equal in size. Unbalanced forces result in a change in motion.

Answer: An unbalanced force refers to the force that causes change in velocity that is causes acceleration of the body. An unbalanced force makes a body to change either its speed or direction or both. A ball rolling down a hill, accelerates downwards because of gravitational force.

When two forces are the same strength but act in opposite direction, they are called balanced forces. Again, tug-of-war is a perfect example. If the people on each side of the rope are pulling with the same strength, but in the opposite direction, the forces are balanced. The result is no motion.

Balanced and unbalanced forces – example When an object is in equilibrium, that is, it is not moving with changing speed, the net force acting on it is balanced. For example, when an apple hangs from a tree, the weight of the apple is balanced by the force exerted by the branch on the apple.

Explanation: The pen will be always in rest…even in movement also.. there will be no forces in the movement of the pen..

Answer Expert Verified The thread will be cut. The pen will go down, the pen’s motion is caused by the absence of tension force that is pulling it up/ opposing the gravity and the gravitational force that pulls it down.

The cutting of the string is the reason why the pen moved to another straight direction because when the string is cut, there is no more centripetal force acting from the pen to the center of the circle and the only thing that remains for the pen is it’s inertia, its inertia made it go tangential to the circular path …

Answer. One is tension force that acts on the string and the other one is gravitational force that is acting on the pen and is therefore, the one that pulls the pen towards the ground. Therefore, the pen’s motion is caused by the unbalanced force acting on the pen.

Answer. Rest. Explanation: The book is at rest because there is no force moving it.