Primero que sucede al utilizarla: 1.
Ingresa un número, por ejemplo 72.3 y a continuación oprime +/-.
2.
Escribe qué número aparece:
3. Describe con tus palabras que hizo la calculadora.
Lo tienes que poner lo que te dice en la calculadora porfa es para hoy

what

i have no idea just need points sorry

step-by-step explanation:

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.