MichaelaHutchins MichaelaHutchins

28-09-2016
Chemistry

contestada

Calculate the number of atoms in a 3.96 × 103 g sample of silicon.

Respuesta :

Willchemistry Willchemistry

07-10-2016

Atomic mass Si = 28.0855 u.m.a

28.0855 g -------------------- 6.02x10²³ atoms
3.96x10³ g ------------------- ?? atoms

( 3.96x10³) x 6.02x10²³ / 28.0855 =

8.48x10²⁵ atoms

Answer Link

Otras preguntas

Marita thinks its better to get angry rather than hide or suppress her feelings so that her husband knows she really cares about the issue. Marita probably uses

The graph of F(x) can be compressed vertically and shifted to the left to produce the graph of G(X). If F(x) = x3, which of the following could be the equation

Leah is flying from Boston to Denver with a connection in Chicago. The probability her first flight is on time is 0.15. If the flight is on time, the probabilit

Different units can be used to measure the same physical quantity, differing only by some multiplicative factor. The cgs unit for magnetic field, the gauss, is

Right triangle ABC is located at A (−1, −2), B (−1, 1), and C (−5, 1) on a coordinate plane. What is the equation of a circle A with radius segment AC? (x + 1)

What is your favorite song? Who is it by? When was it posted? Is the audio 8D? What is it about? Do you reccomend?

Natasha has 13 apples.Some apples are red and some are green.She has more red apples than green apples.How many red apples and how many green apples could she h

Angle 1 is 50 degrees.Which angle is also 50 degrees

In the __________ case, the Supreme Court ruled that the part of the McCain-Feingold law that denied corporations and labor unions the right to run ads violated

27x = 9x − 4 x = 8 x = 4 x = −4 x = −8