1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
arlik [135]
3 years ago
14

In a titration experiment, hcl and lioh solutions were used. the initial volume of hcl was 1.25ml and lioh was 2.65 ml. the fina

l volume of hcl was 13.60 ml and lioh was 11.20 ml. if the lioh was 0.140 m what was the molarity of hcl?
Chemistry
1 answer:
d1i1m1o1n [39]3 years ago
3 0
Answer is: <span>the molarity of HCl is </span>0.097 M.
Chemical reaction: LiOH + HCl → LiCl + H₂O.
V(HCl) = 13.60 mL - 1.25 mL = 12.35 mL.
V(LiOH) = 11.20 mL - 2.65 mL = 8.55 mL.
c(LiOH) = 0.140 M.
From chemical reaction: n(LiOH) : n(HCl) = 1 : 1.
c(HCl) · V(HCl) = c(LiOH) · V(LiOH).
c(HCl) = 8.55 mL · 0.140 M / 12.35 mL.
c(LiOH) = 0.097 M. 
You might be interested in
Which reflects more sunlight-dark soil or white sand?
Gnesinka [82]
I think the answer is white sand (sorry if i am wrong) 
4 0
3 years ago
Read 2 more answers
Given the following Babnced equation 4NH3 +5O2&gt;
igor_vitrenko [27]
4NH3 + 5O2 ==> 4NO + 6H2O Balanced equation
ALWAYS WORK IN MOLES, NOT IN GRAMS
moles of NO produced = 70.5 g NO x 1 mole/30 g = 2.35 moles NO
Since this represents only a 29.8% yield, find what 100% yield would be:
2.35 moles/0.298 = 7.89 moles of NO
From the balanced equation 4 moles NH3 produces 4 moles of NO. Calculate moles of NH3 needed:
7.89 moles NO x 4 moles NH3/4 moles NO = 7.89 moles NH3 needed
Find grams of NH3 needed:
7.89 moles NH3 x 17 g/mole = 134 g NH3 needed
8 0
3 years ago
Compare and contrast how observations and results can be used to
worty [1.4K]

Answer:

by statistical analyses, especially by determining the p-value

Explanation:

In general, observations and results obtained from experimental procedures are subjected to a statistical test to check the robustness of the working hypothesis. The p-value is the most widely used statistical index in order to test such observations and results. The p-value is the statistical probability of obtaining extreme observed results when the null hypothesis is considered correct. A p-value lesser than 0.05 generally is considered statistically significant and then the null hypothesis can be rejected. In consequence, a very low p-value (which is obtained by statistical analysis of the observations and results), indicates that there is strong evidence in support of the alternative hypothesis.

5 0
3 years ago
Read 2 more answers
Which sentence best describes an igneous intrusion
Ulleksa [173]
What are the sentences? 
It would help to see the sentences.
5 0
4 years ago
Read 2 more answers
2. What is the electron configuration of an electrically neutral atom of magnesium?
alekssr [168]
Are u talking about electron sublevel config or where the electrons show in the "rings" of the atom
7 0
4 years ago
Other questions:
  • How many minutes will it take for a car traveling 74 miles per hour to cover 6.50 kilometers?
    13·1 answer
  • An atom of a particular element has a volume of 7.8x10^-31 m^3. What is this volume in cubic nanometers
    5·1 answer
  • Take a look at this weather map. What do you think the H and L represent?
    11·2 answers
  • As the temperature of a gas is increased, the
    6·1 answer
  • Please someone help! I think I did the wrong subject...but I REALLYY need help on this! I'LL MAKE THIS 40 POINTS!!! HERE ARE THE
    10·2 answers
  • Composition about my favorite sport in french​
    5·1 answer
  • Balance the equation<br> KCIO3–&gt; O2+ KCI
    9·2 answers
  • The number 0.0020 expressed in scientific notation is?
    15·2 answers
  • An atom of a mystery element contains 7 protons, 7 neutrons, and 7 electrons.
    13·1 answer
  • Use the patterns you identified to estimate the likely melting point for potassium (K) in Group 1 and barium (Ba) in Group 2. En
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!