You have new items in your feed. Click to view.
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 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 2/3/2015 9:08:21 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Andrew. [4/23/2016 8:01:43 PM]
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 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 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]
0 questions answered
Popular Conversations
Which of the following technologies was NOT created during World War ...
Weegy: B. antibiotics User: Which of the following terms could be applied to the United States during the Cold ...
12/5/2016 2:17:21 PM| 2 Answers
What was the first major conflict of the Cold War? A. the Korean ...
Weegy: The Berlin Blockade was the first major conflict of the Cold War. User: What was the official U.S. policy ...
12/5/2016 2:31:40 PM| 2 Answers
What was the Bonus Army? A. a large group of concerned citizens who ...
Weegy: a large group of World War I veterans who marched on Washington during the Great Depression in the hopes of ...
12/5/2016 6:41:45 AM| 1 Answers
Which three nations were the major Allied Powers by ...
Weegy: Operation Overlord is: the code name for the Allied invasion of Normandy. User: What action did Hitler ...
12/5/2016 7:11:23 AM| 1 Answers
In the early 1900s large numbers of African Americans moved North ...
Weegy: C. the Great Migration. User: What was NOT included as part of the legacy of the progressive movement in the ...
12/5/2016 7:18:44 AM| 1 Answers
Weegy Stuff
S
P
Points 178 [Total 450] Ratings 1 Comments 168 Invitations 0 Offline
S
P
P
Points 38 [Total 717] Ratings 0 Comments 38 Invitations 0 Offline
S
P
Points 34 [Total 466] Ratings 0 Comments 34 Invitations 0 Offline
S
Points 28 [Total 28] Ratings 0 Comments 28 Invitations 0 Offline
S
Points 16 [Total 292] Ratings 0 Comments 16 Invitations 0 Offline
S
Points 10 [Total 32] Ratings 0 Comments 0 Invitations 1 Offline
S
Points 8 [Total 8] Ratings 0 Comments 8 Invitations 0 Offline
S
Points 1 [Total 1] Ratings 0 Comments 1 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
* Excludes moderators and previous
winners (Include)
Home | Contact | Blog | About | Terms | Privacy | © Purple Inc.