neher2128 neher2128

04-04-2016
Chemistry

contestada

What is the mass of 2.90 ×1022 molecules of NaOH (Molar mass = 40.0 g/mol)?

Respuesta :

Willchemistry Willchemistry

04-04-2016

40.0 g ( 1 mole ) --------------- 6.02x10²³ molecules
? ? --------------------------- 2.90x10²² molecules

mass = 2.90x10²² * 40.0 / 6.02x10²³

mass = 1.16x10²⁴ / 6.02x10²³

mass = 1.9269 g

hope this helps!

Answer Link

Otras preguntas

A wave can be described as: a. a continuous transmission of energy from one location to the next b. the disturbance of particles in an area c. the transmissi

suppose a new cancer treatment was given to a sample of 300 patients. The treatment was successful for 210 of the patients. Assume that these patients are repre

which are perfect square trinomials? select two options A. x^2 -9 B. x^2 -100 C. x^2 - 4x + 4 D. x^2 +10x +25 E. x^2 +15x + 36

When I am divided into 22, the remainder is one. When I am added to 5, the answer is an even number. What number am I?

Please solve the equation and chose the correct answer.

i was asked to write an essay about my department in french..my department is international studies.. please help me.

(6^2m+2 × 6^-2m+2 / 6^2 )^1/2

What is ion exchange

Find the value of x. URGENT, please help!?

the difference between close and open circuit using ohms law