How many atoms are there in each of the following ?a.)1.50 mol Na c.) 0.250 mol. Sib.)6.755 mol Pb

Question

lorirexi2003 lorirexi2003

15-11-2018
Chemistry

contestada

How many atoms are there in each of the following ?a.)1.50 mol Na c.) 0.250 mol. Sib.)6.755 mol Pb

Respuesta :

Otras preguntas

After renowned black singer Marion Anderson was denied the use of a concert hall in segregated Washington, d. c. , who arranged for her to sing on the steps of

What was the most highly prized fabric in China? rayon cotton silk polyester

25x^2-16 how to factor

What is a mixed number equivalent to 3.750

Which of the following best states how the Open Door policy affected China and other countries doing business there?

what is the percent of change for $15.60 to $11.70

Are the verb tenses in the sentence consistent, or do they shift unnecessarily? The cat jumped onto the counter and licked the butter. a. The verb tenses shift

In eukaryotes, DNA a. is located in the nucleus. c. is located in the ribosomes. b. floats freely in the cytoplasm. d. is circular.

Which lengths could be the side lengths of a triangle? A) 18 cm, 6 cm, 13 cm B) 13 cm, 22 cm, 7 cm C) 22 cm, 13 cm, 8 cm D) 6 cm, 18 cm, 12 cm

The primary purpose of a narrative essay is to a. tell a story. b. report the facts. c. change a mind. d. describe a place.

malika8888 malika8888 · Answer 1 · 2018-11-18T12:16:49+01:00

[tex]a) \: n = \frac{N}{NA} \\ 1.5 = \frac{x}{6.02 \times \: {10}^{23} } \\ x = 1.5 \times 6.02 \times {10}^{23} \\ x = 9.03 \times {10}^{23} \: atoms \: of \: Na[/tex]

[tex]b) \: n = \frac{N}{NA} \\ 0.25 = \frac{x}{6.02 \times \: {10}^{23} } \\ x = 0.25 \times 6.02 \times {10}^{23} \\ x = 1.505 \times {10}^{23} \: atoms \: of \: Si \: [/tex]
[tex]c) \: n = \frac{N}{NA} \\ 6.755 = \frac{x}{6.02 \times \: {10}^{23} } \\ x = 6.755 \times 6.02 \times {10}^{23} \\ x = 40,6651 \times {10}^{23} \\ x = 4.07 \times {10}^{24} \: atoms \: of \: Pb \: [/tex]