![subject](/tpl/images/cats/himiya.png)
Chemistry, 21.04.2021 16:40 alyssamaize
Replicate water samples are analyzed for water hardness with the following results:
102.2, 102.8, 103.1 and 102.5ppm CaCO3. Calculate:-
(a) The standard deviation
(b) The relative standard deviation
(c) The standard deviation of the mean
(d) The relative standard deviation of the mean.
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Chemistry
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 22:30
Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m
Answers: 3
![question](/tpl/images/cats/himiya.png)
Chemistry, 21.06.2019 23:00
Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom
Answers: 1
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 14:50
Given the following information: mass of proton = 1.00728 amu mass of neutron = 1.00866 amu mass of electron = 5.486 × 10^-4 amu speed of light = 2.9979 × 10^8 m/s calculate the nuclear binding energy (absolute value) of 3li^6. which has an atomic mass of 6.015126 amu. j/mol.
Answers: 2
![question](/tpl/images/cats/himiya.png)
Chemistry, 22.06.2019 23:00
The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be:
Answers: 1
You know the right answer?
Replicate water samples are analyzed for water hardness with the following results:
102.2, 102.8,...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 30.12.2021 15:30
![question](/tpl/images/cats/istoriya.png)
History, 30.12.2021 15:30
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 30.12.2021 15:30
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.12.2021 15:40
![question](/tpl/images/cats/ekonomika.png)
Business, 30.12.2021 15:40
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 30.12.2021 15:40
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2021 15:40
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 30.12.2021 15:40
![question](/tpl/images/cats/himiya.png)
Chemistry, 30.12.2021 15:40
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 30.12.2021 15:40
![question](/tpl/images/cats/ekonomika.png)
Business, 30.12.2021 15:40
![question](/tpl/images/cats/health.png)
Medicine, 30.12.2021 15:40
![question](/tpl/images/cats/mat.png)
Mathematics, 30.12.2021 15:40