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Cloud [144]
3 years ago
11

10. Scientists try to develop an explanation for what

Physics
2 answers:
antoniya [11.8K]3 years ago
6 0

Answer:

it must be based on information that other scientists have also gathered

sleet_krkn [62]3 years ago
5 0

Answer:

hope its ok

Explanation:

 

Science is a way of learning about what is in the natural world, how the natural world works, and how the natural world got to be the way it is. It is not simply a collection of facts; rather it is a path to understanding.so it should contain a logical theory but it can also never be said as the final answer.

so A) OR D) both are correct

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Question 18 of 25
gayaneshka [121]

Answer:

Endothermic, because the reactants are lower in energy (C)

Explanation:

From the graph, you can see the energy of the products is higher than the energy of the reactants. If you recall that  when the enthalpy change  Eproducts is gretater than  Ereactants, the reaction is said to be endothermic.

7 0
3 years ago
2. How can we make the percent error value as minimal as possible?
andriy [413]

Answer:

Percent error can be reduced by improving both your accuracy and precision.

8 0
3 years ago
Read 2 more answers
Is slice of pizzas is compound, Element, Homogeneous mixture, or Heterogeneous Mixture?
4vir4ik [10]
Both of them are Heterogeneous mixtures. They can both be separated into their compounds, but not down to the element.
8 0
3 years ago
What’s the answer??????????????????
Sophie [7]
The answer was increases
7 0
3 years ago
23. Challenge: A gas is heated so that it expands from a volume of 1.0L to a volume of 1.5 l. If the
Natali [406]

<u>417 K is the “final temperature” of the gas</u>.

<u>Explanation</u>:

According to “Charles law” the change in “volume” of a given mass of gas expanded is “directly proportional” to the “temperature” of the given gas expanded. When we keep “pressure” of the gas as constant. Mathematically,

v \alpha T

\frac{v}{T}=\text { constant }

If gas is expanded from initial volume to final volume and initial temperature to final temperature then,

\frac{v_{1}}{T_{1}}=\frac{v_{2}}{T_{2}}

\begin{array}{l}{\text { Where, } v_{1} \text { and } v_{2} \text { are the initial and final volumes of the gas expanded recpectively,}} \\ {T_{1} \text { and } T_{2} \text { are the initial and final temperatures of the gas expanded recpectively }}\end{array}

Given that,

Initial volume is 1.0L

Final volume is 1.5L

\text { Initial temperatureis } 5.0^{\circ} \mathrm{C}=5+273=278 \mathrm{K}

To find final temperature of the gas

Substitute the given values,

\frac{1}{278}=\frac{1.5}{T_{2}}

T_{2}=1.5 \times 278

T_{2}=417 K

Therefore, <u>final temperature of the gas after expanding is 417 K</u>.

5 0
4 years ago
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