A community for students.
Here's the question you clicked on:
 0 viewing
Lena772
 one year ago
How many grams of Sodium hydroxide are present in 50.0 mL of a Sodium hydroxide solution that is 0.0950 M?
moles solute = molarity x L of solution
50ml = 0.05 L
0.0950 M * 0.05 L = 0.0475 moles solute
0.0475 moles solute * 39.99711 g OH = 1.90 g OH
Is this correct @cuanchi ?
Lena772
 one year ago
How many grams of Sodium hydroxide are present in 50.0 mL of a Sodium hydroxide solution that is 0.0950 M? moles solute = molarity x L of solution 50ml = 0.05 L 0.0950 M * 0.05 L = 0.0475 moles solute 0.0475 moles solute * 39.99711 g OH = 1.90 g OH Is this correct @cuanchi ?

This Question is Closed

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0\[liters*\frac{ mol }{ L } = moles \] \[moles solute NaOH* \frac{ mass NaOH }{ 1 mol }\]

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0That was supposed to be molar mass of NaOH, that's just to illustrate how the units cancel out, and that's why it's important to include them in your calculation.

Lena772
 one year ago
Best ResponseYou've already chosen the best response.0@Photon336 I submitted and it says it's incorrect.

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0they give you (molarity) and the volume of NaOH and ask for the number of grams but she says that the procedure she did was wrong,

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.3When I type it into my calculator for that first part the 0.0950x0.05 I get 0.00475 not 0.0475 so that would give a final answer of 0.1899g

Photon336
 one year ago
Best ResponseYou've already chosen the best response.0Tara I assumed that her numbers were correct, I was just checking like how she did the set up

taramgrant0543664
 one year ago
Best ResponseYou've already chosen the best response.3Ya I saw the set up was fine so I questioned the calculations simple error

mathmate
 one year ago
Best ResponseYou've already chosen the best response.0@lena772 Did you get what tara explained? However, all given nonexact information is given to 3 significant figures, so the answer should be 0.190 g as opposed to 0.19 g. The number of significant figures in Chemistry is of utmost importance.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.