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

Steve needs to take at least 24 milligrams of calcium, 15 milligrams of iron, and 16 milligrams of vitamins. Which ordered pairs of values are solutions for the

What number goes in the missing space?

The use of air bags in cars reduces the force of impact by a factor of 110.(The resulting force is only as great.) What can be said about how the airbag change

i need help on this question about the book divergent

Evaluate 2LW + 2HL + 2HW for L = 3,W = 2, and H = 4.

There is a group tour at the museum every 20 minutes. A movie about the exhibit begin every 45 minutes. Both begin at 9am. What time will both tour and movie be

Which colony had to fight for independence? 1) South Africa 2) Belgian Congo 3) Ethiopia 4) Ghana

Could use some help!

As humans have converted prairies to pastures and farms, prairie dogs have lost 98 percent of their habitat. Prairie dogs are the only food source for ferrets.

Which stage of photosynthesis requires water to complete the chemical reaction?