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Ivahew [28]
3 years ago
14

Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to

relate your findings?
--------------------------------------------
Edge2020, 6th grade
--------------------------------------------
Please hurry
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15 points! Don't answer without one!
Chemistry
2 answers:
sleet_krkn [62]3 years ago
6 0

Answer:

In a lab guide, the key results are those that support my working hypotheses or serve to reject these assumptions. Moreover, the key results may also be other discoveries that are important to understand the processes and/or mechanisms investigated in the experiment.

In my experience, the best way to summarize the key results is to create diagrams and illustrations that enables me to study relationships between different data

Explanation:

olga nikolaevna [1]3 years ago
4 0
Yes^..................
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This mechanism shows the conversion of ozone to oxygen in the upper atmosphere. What is the overall reaction from the mechanism?
Salsk061 [2.6K]

Answer:

its B. O3 + ClO → 2O2 + Cl

Explanation:

I just took the test and got it right

4 0
3 years ago
Hydrogen-3 has a half-life of 12.32 years. A sample of H-3 weighing 3.02 grams is left for 15.0 years. What will the final weigh
kaheart [24]

Answer:

\large \boxed{\text{1.38 g}}

Explanation:

Two important formulas in radioactive decay are

(1) \qquad t_{\frac{1}{2}} = \dfrac{\ln 2}{k}\\\\(2) \qquad \ln \left(\dfrac{N_{0}}{N}\right) = kt

1. Calculate the decay constant k

\begin{array}{rcl}t_{\frac{1}{2}} &=& \dfrac{\ln 2}{k}\\\\\text{12.32 yr} &= &\dfrac{\ln 2}{k}\\\\k & = & \dfrac{\ln 2}{\text{12.32 yr}}\\\\& = & \text{0.056 26 yr}^{-1}\\\end{array}

2. Calculate the mass remaining

\begin{array}{rcl}\ln \left(\dfrac{A_{0}}{A}\right) &= &kt \\\\\ln \left(\dfrac{\text{3.20 g}}{A}\right) &= &\text{0.056 26 yr}^{-1}\times \text{15 yr} \\\\\ln \left(\dfrac{\text{3.20 g}}{A}\right) &= &0.8439 \\\\\dfrac{\text{3.20 g}}{A} &= &e^{0.8439} \\\\\dfrac{\text{3.20 g}}{A}&= &2.325 \\\\A &= &\dfrac{\text{3.20 g}}{2.325}\\\\&= & \textbf{1.38 g}\\\end{array}\\\text{The final mass of the sample will be $\large \boxed{\textbf{1.38 g}}$}

8 0
3 years ago
The metal rhenium becomes superconducting at temperatures below 1.4 K. Calculate the temperature at which rhenium becomes superc
kotegsom [21]

Answer:

The temperature at which rhenium becomes superconducting is -271.6 ºC.

Explanation:

We can convert the temperature given in Kelvin, which is an absolute scale, into degrees Celsius. which is a relative scale, by a simple algebraic translation, that is:

T_{C} = T_{K} - 273 (1)

Where:

T_{C} - Temperature, measured in degrees Celsius.

T_{K} - Temperature, measured in Kelvins.

If we know that T_{K} = 1.4\,K, then the temperature given in degrees Celsius is:

T_{C} = 1.4\,K-273

T_{C} = -271.6\,^{\circ}C

The temperature at which rhenium becomes superconducting is -271.6 ºC.

8 0
3 years ago
Write a hypothesis about the addition of compost (nutrients) to the soil and ecological succession using this format: “If . . .
nlexa [21]

Answer:

This is the correct answer please give me 5-star and likes

Explanation:

If nutrients are added to an ecosystem, then the composition of the plant community at different stages of succession will also change because different species take advantage of different soil conditions.

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The temperature at which there is no kinetic energy in an object . Is?? ASAP
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