Why is it important to add coefficients and not change the subscripts when balancing a chemical equation?

I have 2 questions: Sulfur has an atomic number of 16 and belongs in Group 6 on the periodic table. Calcium has an atomic number of 20 and belongs in Group 2 on the periodic table.

320.93 - (6109.7/2.3) Express your answer to the appropriate number of significant digits.

How can i write a reaction equation for NH3 + H2SO4?

Specific heat capacity is the quantity of heat required to raise the temperature of one mole of a substance by one degree Celsius. True False

Calculate the mass, in kilograms, of a piece of copper that absorbed 19,550 calories of heat, which caused the temperature to rise 85 degrees Celsius. C = 0.092 cal/g degrees Celsius. Use 2 significant figures.

A sphere has a mass of 64 g, and a density of 2.0 g/cm3. what is the radius of the sphere

Why is the sun so hot what is the sun made up of

How does hess's law use intermediate reactions to calculate the enthalpy of a desired reaction?

Convert phenol to anisole

What is hydrocarbon?