subject
Biology, 04.06.2020 18:57 wavymoney77yt

Hola tengo un examen, no es necesario que me den todas las respuestas pero me seria de gran ayuda si me respondieran las que sepan Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5)
Opciones:
737,5 g de NaC
737,5 gr de NaC
738,5 g de NaC

Determinar la cantidad de moles y átomos de Calcio que hay en 120 g de Ca. (Masas Ca:40)
opciones:
3 mol de Ca y 1,8066 x 10^24
3 mol de Ca y 1,8065 x 10^24
3 mol de Ca y 1,8067 x 10^24

Para el ácido sulfúrico H2SO4 (Masas H:1,0 S: 32,01; O: 16,0). ¿Cuál es su masa molar?
opciones:
98 Kg/mol
98 gr/mol
98 g/mol

Cuántos átomos de Magnesio (Mg) hay 52 g de este (Masa Mg: 24,31)?
opciones:
12.89 x 10^23 (4 puntos)
12.88 x 10^23 (4 puntos)
12.88 x 10^24 (4 puntos)

Sabrías decir el número de moles de átomos de carbono en 513 g de C12H22O11 (Masa molar de C12H22O11: 342 g)
17 mol de átomo de C.
16 mol de átomo de C.
18 mol de átomo de C.

Ncesito ayuda no entiendo :( de verdad estaria agradecido si me ayudan

ansver
Answers: 1

Another question on Biology

question
Biology, 22.06.2019 04:00
Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x albino a) all chinchilla b) 1/2 chinchilla, 1/2 albino c) 3/4 chinchilla, 1/4 albino
Answers: 1
question
Biology, 22.06.2019 09:10
Research question: why are the carrots that grew on the left side of the garden larger than the carrots that grew on the right side of the garden? which hypothesis is based on this research question? a comparison of people with gardens to people without gardens will show who is likely to live longer. b. carrots are thought to be good for your eyesight and should be eaten regularly. c. carrots that are provided lots of sunlight grow to a larger size than carrots grown in the shade. d. eating fresh vegetables every day is a healthy thing to do.
Answers: 1
question
Biology, 22.06.2019 11:00
If a grape were placed in a hypertonic solution what would happen and why?
Answers: 1
question
Biology, 22.06.2019 12:10
Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give
Answers: 1
You know the right answer?
Hola tengo un examen, no es necesario que me den todas las respuestas pero me seria de gran ayuda si...
Questions
question
Mathematics, 23.11.2019 14:31
question
Mathematics, 23.11.2019 14:31
question
Mathematics, 23.11.2019 14:31
question
Physics, 23.11.2019 14:31
Questions on the website: 13722367