Download presentation

Presentation is loading. Please wait.

Published byMakayla Quinlan Modified over 3 years ago

1
1) a) H = 2.06%, S = 32.69%, O = 65.25% b) Ca = 54.09%, O = 43.18%, H = 2.73% 2) 24 x.787 + 25 x.101 + 26 x.112 = 24.3 3) a) 98.08 g/mol, b) 759.70 g/mol 4) a) 0.12 mol (= 16 g CuCl 2 x 1 mol/134.45 g) b) 4091 g (= 70 mol NaCl x 58.44 g/mol) 5) there are 6.02 x 10 23 particles in a mole … a) 2.41 x 10 24 molecules (4 x 6.02x10 23 ) b) 4.82 x 10 24 atoms (4 x 2 x 6.02x10 23 ) c) 2.08 x 10 23 atoms (0.173 x 2 x 6.02x10 23 ) 6) (2Mg + O 2 2MgO) 142 g MgO (see below) 2 mol MgO 1 mol O 2 x # g MgO=56.3 g O 2 40.31 g MgO 1 mol MgO x 1 mol O 2 32.00 g O 2 x

2
7 a) CuCl 2 is simplest (not molecular - its ionic) b) Simplest and molecular c) Molecular, d) Molecular 8 a) Simplest formula is CH 3 : if we assume we have 100 g: 80 g C (6.66 mol), 20 g H (19.8 mol). simplest ratio: C (6.66/6.66) = 1 mol, H (19.8/6.66) = 3.0 mol b) 30 g/mol / 15.04 g/mol = 2.0 … C 2 H 6 9 a) 2C 40 H 82 + 121O 2 80CO 2 + 82H 2 O, b) 12H 2 O + Al 4 C 3 3CH 4 + 4Al(OH) 3 10a) 150 64 Gd 4 2 He + 146 62 Sm b) 60 27 Co 0 -1 e + 60 28 Ni

3
11) Loss of product, incomplete reactions, side reactions, and impure reactants or products 12)a) O 2 is limiting (see below). b) 23.18 g 6 mol H 2 O 4 mol NH 3 x 26 g NH 3 41.24 g H 2 O= 18.02 g H 2 O 1 mol H 2 O x 1 mol NH 3 17.04 g NH 3 x 6 mol H 2 O 3 mol O 2 x # g H 2 O= 20.58 g O 2 23.178 g H 2 O= 18.02 g H 2 O 1 mol H 2 O x 1 mol O 2 32.00 g O 2 x 15 g H 2 O 23.178 g H 2 O = % yield = x 100%65%= actual theoretical x 100%

4
13)2Cu + S Cu 2 S 1 mol Cu 2 S 1 mol S x 50 g S 248 g Cu 2 S= 159.16 g Cu 2 S 1 mol Cu 2 S x 1 mol S 32.06 g S x 1 mol Cu 2 S 2 mol Cu x # g Cu 2 S= 100 g Cu 125.2 g Cu 2 S= 159.16 g Cu 2 S 1 mol Cu 2 S x 1 mol Cu 63.55 g Cu x 97 g Cu 2 S 125.2 g Cu 2 S = % yield = x 100%77%= actual theoretical x 100% For more lessons, visit www.chalkbored.com www.chalkbored.com

Similar presentations

OK

Multiplication X 1 1 x 1 = 1 2 x 1 = 2 3 x 1 = 3 4 x 1 = 4 5 x 1 = 5 6 x 1 = 6 7 x 1 = 7 8 x 1 = 8 9 x 1 = 9 10 x 1 = 10 11 x 1 = 11 12 x 1 = 12 X 2 1.

Multiplication X 1 1 x 1 = 1 2 x 1 = 2 3 x 1 = 3 4 x 1 = 4 5 x 1 = 5 6 x 1 = 6 7 x 1 = 7 8 x 1 = 8 9 x 1 = 9 10 x 1 = 10 11 x 1 = 11 12 x 1 = 12 X 2 1.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on endemic and endangered species of india Ppt on artificial intelligence techniques Ppt on thought leadership Ppt on credit policy pdf Ppt on self development preschool Procure to pay ppt online Ppt on media revolution tv Project ppt on library management system Ppt on water activity symbol Ppt on area of parallelogram and triangles worksheet