Unidades químicas de concentración, molaridad, normalidad, molalidad
Entradas
Ejemplos de preguntas básicas
What is your name? her What is alexandra ´s friend name? What is alexandra ´s mom´s name? How old are you? How old is she ? She is 14 years old Where are you from? I am from ........ Where is she from? She is from ........ . Where is he from? He is from .......... Do you have brothers? Yes i have a brothers Does she have brothers? Yes, she has a brothers, she doesn,t have Do you like apples? Yes i like apples Does she likes apples? he Yes she likes apples
Pronombres personales
Personal pronouns To be=ser o estar I am I have You are You have He is Has She is Has It is Has We are You are They are} I -my You -your He -his She -her I am student She is estudent
Preguntas mas comunes y respuestas en ingles
Do you have brothers/sister,boyfriend,girlfriend Yes, i have a computer, money,etc. Do you like soccer catts Yes i like soccer catts No i don´t like............ How are you? I am fine thank you I´m good excellent great cool happy sad sick hot cold bored tined thirsty hungry
Ingles
Hello! Questions: Hi! May i come in? Good afternoon! May i go to the bathroom? Good evening! Can you repet, please? Good nigtht! Can you spell please? Bye/see you later 1.-what is your name? ...
Masa atómica
Isótopos Los isótopos son átomos cuyos núcleos atómicos tienen el mismo número de protones pero diferente número de neutrones . No todos los átomos de un mismo elemento son idénticos y cada una de estas variedades corresponde a un isótopo diferente. Cada isótopo de un mismo elemento tiene el mismo número atómico (Z) pero cada uno tiene un número másico diferente (A). El numero atómico corresponde al número de protones en el núcleo atómico del átomo. El número másico corresponde a la suma de neutrones y protones del núcleo. Esto significa que los diferentes isótopos de un mismo átomos se diferencian entre ellos únicamente por el número de neutrones .