Saturday

November 22, 2014

November 22, 2014

Posted by **john** on Saturday, February 23, 2008 at 12:24pm.

a) 3.011 x 10^23 atoms F

b)1.50 x 10^23 atoms Mg

c)4.50 x 10^12 atoms Cl

d)8.42 x 10^18 atoms Br

e) 25 atoms w

f) 1 atom Au

can you please explain a and b to me then i'll come back later and see if i did the rest right? Thanks in advance

- chemistry -
**Jess**, Saturday, February 23, 2008 at 1:13pmUse stochiometry

a) Molar mass F = 19g/mol

so...

(3.011 x 10^23 atoms F) X (1molF/(6.022 x10^23atoms)X (19g/1mol F) = 9.5 g F

(1molF/(6.022 x10^23atoms) = Avogardro's Law can be used in any situation such as this. Use it for the rest of the questions listed in the same way shown above.

- chemistry -
**john**, Saturday, February 23, 2008 at 1:23pmbut how would the answers by in scientific notations

**Answer this Question**

**Related Questions**

chemistry - what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...

chemistry - what is the mass in grams? a) 3.011 x 10^23 atoms F b)1.50 x 10^23 ...

chemistry - Calculate the mass, in grams, of each of the following. a) 1.2×10^23...

Chemistry - If a sample of Co2(CO)8 is found to contain 6*10^-2 mol of C atoms, ...

chemistry - How many atoms are in 3.14 mol of methane (CH4)? A. 7.56 x 1023 ...

chemistry - calculate number of atoms in 4.67 mol of Ca(NO3)2 I got: 2.81 X 10^...

Chem - Superscript 15 How many moles of Pb is 9.3 X 1015 atoms of pb? 1 mol of ...

chemistry - Calculate the mass, in kg, of each sample.9.62×1026 cadmium atoms. -...

General Chemistry - Calculate the number of C atoms, H atoms, and O atoms, in 1....

chemistry - How many atoms are in 1.14 mol of propane (C3H8)? A. 7.55 x 1023 ...