All categories

3 years ago

What Is Precision? The Degree Of Accuracy In A Measurement

Chemistry

1 answer:

Artemon [7]3 years ago

4 0

Answer:

Precision refers to how close two or more measurements are to each other, regardless whether those measurements are accurate or not.

Accuracy refers to how closely the measured value of a quantity corresponds to its “true” value.

Explanation:

You might be interested in

What is a product of science

ddd [48]

Answer:

A product in science is a substance that is formed when two or more chemicals react.

Explanation:

When a chemical reaction takes place, a new substance is often created from the atoms or molecules of the original substances. There are often multiple products formed in a reaction.

6 0

3 years ago

hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

jenyasd209 [6]

Answer:

hiiiiiiiiiiiiiiiiiiiiiiii

6 0

4 years ago

Read 2 more answers

What is the energy released in the fission reaction 1 0 n + 235 92 U → 131 53 I + 89 39 Y + 16 1 0 n 0 1 n + 92 235 U → 53 131 I

mihalych1998 [28]

Answer: The energy released in the given nuclear reaction is 94.99 MeV.

Explanation:

For the given nuclear reaction:

$_{92}^{235}\textrm{U}+_0^1\textrm{n}\rightarrow _{53}^{131}\textrm{I}+_{39}^{89}\textrm{Y}+16_{0}^1\textrm{n}$

We are given:

Mass of $_{92}^{235}\textrm{U}$ = 235.043924 u

Mass of $_{0}^{1}\textrm{n}$ = 1.008665 u

Mass of $_{53}^{131}\textrm{I}$ = 130.9061246 u

Mass of $_{39}^{89}\textrm{Y}$ = 88.9058483 u u

To calculate the mass defect, we use the equation:

$\Delta m=\text{Mass of reactants}-\text{Mass of products}$

Putting values in above equation, we get:

$\Delta m=(m_U+m_{n})-(m_{I}+m_{Y}+16m_{n})\\\\\Delta m=(235.043924+1.008665)-(130.9061246+88.9058483+16(1.008665))=0.1019761u$

To calculate the energy released, we use the equation:

$E=\Delta mc^2\\E=(0.1019761u)\times c^2$

$E=(0.1019761u)\times (931.5MeV)$ (Conversion factor: $1u=931.5MeV/c^2$ )

$E=94.99MeV$

Hence, the energy released in the given nuclear reaction is 94.99 MeV.

3 0

3 years ago

Que es un atomo Por favor gracias

klemol [59]

Answer:

Un atomo es el parto pequeño de un elemento y es el bloque de construcción de la materia. Puede ser conocido como neutrón, protón o electrón.

3 0

3 years ago

I NEED HELP WITH THIS ASAP!!!!!!!!!!!!!

Tom [10]

Answer: The answer is B

Explanation:

7 0

4 years ago