19-09-2016
Chemistry

contestada

What is the mass in grams of 6.12 x 10^20 molecules of caffeine, C8H10N4O2?

Respuesta :

19-09-2016

[tex]6,02*10^{23} \ \ \ \ \ \ \rightarrow \ \ \ \ \ 194,2g\\ 6,12 * 10^{20} \ \ \ \ \ \ \rightarrow \ \ \ \ \ x\\\\ x=\frac{6,12*10^{20}*194,2g}{6,02*10^{23}}\approx197*10^{-3}g=0,197g[/tex]

Answer Link

Otras preguntas

How does the vital capacity (VC) from your data compare with predicted VC for a person of the same gender, age, and height as your subject? a. greaterb. lessc.

Below is the result from a 2x2 factorial ANOVA on teacher salary, with the factors of gender (male vs female) and community type (suburban vs rural). What is a

What linear speed must a 5.5×10⁻² kg hula hoop have if its total kinetic energy is to be 0.20 J? Assume the hoop rolls on the ground without slipping.

What is the direction of cargo movement on microtubules? 1) Towards minus ends of microtubules 2) Towards plus ends of microtubules

What was the object of the Butler Committee of 1927? 1) To define the jurisdiction of the central and provincial governments 2) To propose reforms in the educat

A random variable x is normally distributed with mean 16 and standard deviation 1.6. Find the probability P(x≤19.3). Round to 4 decimal places.

Which of the following pairs is mismatched? 1) Green algae - Ulothrix 2) Brown algae - Dictyota 3) Mosses - Polytrichum 4) Red algae - Ectocarpus

The value for the total current in figure 2 is

What is the equation of the blue line?

For a hydrogen atom, the energy of an electron in the first Bohr orbit is 13.12. What is the energy required for its excitation to the second Bohr orbit?