Question and answer
How many protons, electrons, and neutrons does an atom with atomic number 50 and mass number 125 contain? a 70 neutrons, 75 protons, 50 electrons b 120 neutrons, 50 protons, 75 electrons c 50
protons, 50 electrons, 75 neutrons d 75 electrons, 50 protons, 50 neutrons
50 protons, 50 Electrons and 75 Neutrons. The Atomic number is the number of protons in the nucleus of an atom, while the mass number is the sum of the protons plus the neutrons. [ The electrons have near 0 mass so they don't add up to the mass number and unless the atom is an isotope, the number of protons is always equal to those of electrons. ]
Expert answered|wisbest|Points 1806|
Question
Asked 2/8/2013 4:16:49 PM
0 Answers/Comments
Get an answer
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
To determine the formula of a new substance, one of the first steps is to find the a molar mass b percent composition c volume at STP d number of particles per mole
Question
Not Answered
Updated 209 days ago|2/3/2015 9:08:21 PM
1 Answer/Comment
To determine the formula of a new substance, one of the first steps is to find the: percent composition.

Added 209 days ago|2/3/2015 9:08:21 PM
This answer has been added to the Weegy Knowledgebase
If 20.0 grams of Ca combines completely with 16.0 grams of S to form a compound, what is the percent composition of Ca in the compound? a 1.25% b 20.0% c 44.4% d 55.6%
Weegy: 44.4% is the percent composition of S in the compound. User: If 20.0 grams of Ca combines completely with 16.0 grams of S to form a compound, what is the percent composition of Ca in the compound? Weegy: The total mass of the compound is 20 + 16 g, or 36 g. Of that 36 g, 20 is Ca. [ So the fraction of Ca is 20 / 36. To change that to % multiply by 100, so.. % Ca is 20 / 36 X 100% or 55.555555% ( ] (More)
Question
Expert Answered
Asked 2/1/2013 11:23:09 PM
0 Answers/Comments
The lowest whole-number ratio of the elements in a compound is called the a empirical formula b molecular formula c binary formula d representative formula
Weegy: C. empirical formula User: What is the empirical formula of a substance that is 53.5% C, 15.5% H, and 31.1% N by weight? A) C3HN2 B) C4H14N2 C) C2H7N D) CH4N7 Weegy: Empirical formula: C2H7N User: Which of the following is NOT true about empirical and molecular formulas? a The molecular formula of a compound can be the same as its empirical formula. b The molecular formula of a compound can be some whole-number multiple of its empirical formula. c Several compounds can have the same empirical formula, but have different molecular formulas. d The empirical formula of a compound can be triple its molecular formula. (More)
Question
Expert Answered
Asked 2/1/2013 11:31:49 PM
0 Answers/Comments
Which of the following compounds has the lowest percent gold content by weight? A) AuOH B) Au(OH)3 C) AuCl3 D) AuI3
Weegy: compounds has the lowest percent gold content by weight: D) AuI3 molar mass AuOH = 213.997 g/mol % Au = 196.97 x 100 / 213.997 = 92.1 molar mass Au(OH)3 = 247.99 g/mol % Au = 196.97 x 100 / 247.99=79.4 molar mass AuCl3 = 303.329 g/mol % Au = [ 196.97 x 100/ 303.329=64.9 molar mass AuI3 = 577.682 g/mol % Au = 196.97 x 100 / 577.682 =34.1 ] User: Which of the following compounds have the same empirical formula? A) CO2 and SO2 B) C7H14 and C10H20 C) C4H10 and C10H4 D) C6H12 and C6H14 (More)
Question
Expert Answered
Asked 2/1/2013 11:28:03 PM
0 Answers/Comments
Write the slope intercept form of the equation of the line that passes through (-2, -3) and (2, -5). a y = -2x - 7 b y = 1/2x + 4 c y = -1/2x - 4 d y = -2x + 1
Question
Not Answered
Updated 350 days ago|9/16/2014 7:50:10 AM
1 Answer/Comment
y = -1/2x - 4 is the equation that writes in the slope intercept form of the equation of the line that passes through (-2, -3) and (2, -5 ) .
Added 350 days ago|9/16/2014 7:44:39 AM
Deleted by jeifunk [9/16/2014 7:50:06 AM], Undeleted by jeifunk [9/16/2014 7:50:08 AM]
21,966,342 questions answered
Popular Conversations
The etymology of a word is sometimes reflected in its ...
Weegy: Have a great day! Ask Weegy again soon User: The transition word(s) that would best introduce an example ...
8/31/2015 6:25:44 AM| 2 Answers
Find the value of 83 - [59 - (22 - 18)].
Weegy: 83 - (59 - (22 - 18)) =83 - (59 - 4) =83 - 55 =28 User: Find the value of 5 · 2 ^3
8/31/2015 8:28:09 AM| 2 Answers
Find two consecutive integers whose sum is 67. Which of the ...
Weegy: To find two consecutive integers whose sum is 67 use the equation 2x + 1= 67 2x + 1= 67 2x = 67 - 1 2x = ...
8/31/2015 9:51:16 AM| 2 Answers
The ____ is the layer of the atmosphere nearest to Earth's ...
Weegy: Some scientists hypothesize that Earth's ozone layer is being damaged by chlorofluorocarbons. User: a gas ...
8/31/2015 10:33:27 AM| 2 Answers
The sum of two consecutive odd integers is -72 What is the larger ...
Weegy: The larger integer is -135 User: The sum of two consecutive even integers is -34 What is the smaller integer?
8/31/2015 10:38:43 AM| 2 Answers
Weegy Stuff
S
L
L
P
1
Points 27 [Total 9337]| Ratings 1| Comments 17| Invitations 0|Offline
S
Points 20 [Total 325]| Ratings 0| Comments 20| Invitations 0|Offline
S
Points 19 [Total 803]| Ratings 0| Comments 19| Invitations 0|Offline
S
Points 9 [Total 197]| Ratings 0| Comments 9| Invitations 0|Offline
S
Points 3 [Total 227]| Ratings 0| Comments 3| Invitations 0|Offline
S
1
L
L
P
R
Points 2 [Total 9325]| Ratings 0| Comments 2| Invitations 0|Offline
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
S
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
S
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.