ibraheemnouman ibraheemnouman

18-04-2022
Chemistry

contestada

The Molar mass of silicon is 28.09 grams/mole

Calculate the number of atoms in a 92.8 mg sample of silicon
Write your answer in scientific notation using three significant figures

Respuesta :

chyao789 chyao789

18-04-2022

1. Set up conversion factors.
92.8 mg x 1 g/10^3 mg x 1 mol/28.09 g x 6.022x10^23 atoms/1 mol

2. Cancel units.
1.99 x 10^21 Si atoms

Answer Link

Otras preguntas

One way to measure the amount of energy that a moving object (such as a car) possesses is by finding its Kinetic Energy. The Kinetic Energy (Ex, measured in Jou

a language researcher has completed final analysis on a data set and has discovered a highly homogenous distribution of participant scores. due to this homogene

Question 4 of 10 What is the name for a reusable group of blocks used to create a module in MakeCode Arcade? A. Function B. Program C. Variable D. Parameter

in california, when the bailee is engaged in a business of a type thought suitable for public regulation, a court is likely to enforce the exculpatory clause.

The answer to part (b) is about 40 times greater than the acceleration of gravity, so we'd better be wearing our seat belts. Note that the solution didn't requi

Which of the following is false under federal law regarding employer monitoring of employee telephone calls? A. Employers cannot listen to the private telephone

in the detailed systems design phase of the systems development life cycle (sdlc), steps are laid out for the conversion of a database from an old system to a n

in the circular flow diagram, supply the factors of production, and goods and services. a. households; sell b. households; buy c. firms; sell d. firms; buy

which of the following activities is excluded from gdp, causing gdp to understate a nation's production?

a. dna promoter > rna polymerase > mrna b. dna>protein>rna c. nucleus>mrna>rrna trna>amino acid>polypeptide d. initiation>elongation&