In which of these samples do the molecules have the greatest kinetic energy?

The total volume required to reach the endpoint of a titration required more than the 50 mL total volume of the buret. An initia

Sonja [21]

Answer:

The answer is " $\bold{50.42 \pm 0.08}$ ".

Explanation:

Overall delivered volume $= [(49.06 \pm 0.05) + (1.77 \pm 0.05)]\ mL$

Its blank solution without any of the required analysis $= (0.41 \pm 0.04)\ mL$

Compute the volume of the endpoint as follows:

Formula:

$\text{End point volume = Total Volume delivered - volume required}$

$= (49.06 \pm 0.05) + (1.77 \pm 0.05) - (0.41 \pm 0.04) \\\\= (49.06 + 1.77 - 0.41) \pm \ \ (absolute \ \ uncertainty)$

therefore,

absolute uncertainty $=\sqrt{(0.05)^2 + (0.05)^2 + (0.04)^2}$

$=\sqrt{0.0025 +0.0025 +0.0016} \\ \\=\sqrt{0.0066}\\\\=0.08124\\$

The Endpoint volume $= (49.06+1.77-0.41)\pm (0.08124)$

$= 50.42 \pm 0.08$

Therefore, the volume of the endpoint adjusted for the blank is:

$\bold { = 50.42 \pm 0.08}$

3 0

4 years ago

A student wants to measure the entropy of ice. What should the student do?

Helen [10]

Answer: Option (c) is the correct answer.

Explanation:

Entropy is defined as the degree of randomness. This means that more is the number of collisions taking place between atoms of a substance more will be the randomness.

Therefore, more will be the entropy of substance. We cannot measure the entropy but we can measure the change in entropy of a substance.

A thermometer is a glass tube that contains a liquid column generally mercury, and it is usually used to measure the temperature of human body.

A calorimeter is a device or apparatus that is used in a chemical reaction to measure the amount of heat involved.

Therefore, we can conclude that the student can't measure entropy directly, only an entropy change.

6 0

3 years ago

Cobalt-59 is the only stable isotope of this transition metal. One ⁵⁹Co atom has a mass of 58.933198 amu. Calculate the binding

Temka [501]

Cobalt-59 is the only stable isotope of this transition metal. • Mass of proton = 1.00783 amu1.00783 amu

<h3>What is isotope ?</h3>

Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a given element are nearly identical, they differ in their atomic weights and physical characteristics.

The name "isotope" refers to the fact that different isotopes of a single element occupy the same location on the periodic table. The term "isotope" is derived from the Greek words isos ("equal") and topos ("place"), which together indicate "the same place." In 1913, Scottish physician and author Margaret Todd suggested the term to British chemist Frederick Soddy.

To learn more about isotope from the given link:

brainly.com/question/364529

#SPJ4

5 0

2 years ago

Which of the following demonstrates a double-replacement reaction?

Volgvan

A: Na3PO4 + MnCl2 > Mn3(PO4)2 + NaCl

6 0

3 years ago

Read 2 more answers

Exercise while in space is important because it PREVENTS what?