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Harman [31]
3 years ago
8

One way to ensure that scientific claims are valid is to analyze who is presenting the information: only trust information prese

nted by those who are experts or have the proper credentials.
True

False
Chemistry
2 answers:
Marina86 [1]3 years ago
8 0

False

Explanation:

The best way to ensure scientific claims are valid is to subject them to various tests. Scientific claims has nothing to do with the body presenting them. Claims are authenticated following due scientific process.

  • Scientific method provides a way of ascertaining the validity of an assumption.
  • If the claims is not supported by the body of evidence obtained, then the claim has to be modified or refuted.
  • When the claim is consistent with various infallible proof from different sources, then it can be accepted.

Learn more:

experiments brainly.com/question/5096428

#learnwithBrainly

den301095 [7]3 years ago
4 0

Answer:

False

Explanation:

The person presenting the scientific claim does not matter the claim itself is what is important if a random person of the street presents a claim that is tested and found to be correct that is great but if Steven Hawkins presented a claim and it went untested because of his name it could be completely wrong but still believed which means that the proof is much more important then the name.

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8 0
3 years ago
choose five elements from the periodic table and arrange them according to increasing atomic radii increasing ionization energy
gregori [183]
Choose five elements from the periodic table and arrange them according to increasing atomic radii increasing ionization energy increasing electronegativity in increasing metallic property
6 0
3 years ago
Add 3 x 10^9 +5.3 x 10^10
Ghella [55]
<span>Add 3 x 10^9 +5.3 x 10^10

</span><span>   3 x 10^9
 +5.3 x 10^10
</span>------------------
5.6 x 10^10
8 0
3 years ago
Read 2 more answers
What is the oxidizing agent in the following reaction? Cr2O3(2) + Al(s) &gt; Cr(s) + Al2O(s)
zhenek [66]

Al is a reducing agent, Cr _2O _3 is an oxidizing agent.

<h3>What is an oxidizing agent?</h3>

An oxidizing agent is a substance that causes oxidation by accepting electrons.

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Hence, option C is correct.

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7 0
2 years ago
At 850°C, CaCO3 undergoes substantial decomposition to yield CaO and CO2. Assuming that the ΔH o f values of the reactant and pr
Xelga [282]

Answer:

The enthalpy if 68.10 grams of CO2 is produced is  -189.04 kJ

Explanation:

<u>Step 1:</u> Data given

temperature = 850 °C

Mass of 68.10 grams of CO2

ΔH°f (CaO) = -635.6 kJ/mol

ΔH°f (CO2) = -693.5 kJ/mol

ΔH°f (CaCO3) =-1206.9 kJ/mol

<u>Step 2: </u>The balanced equation

CaCO3(s) → CaO(s) + CO2(g)

<u>Step 3:  </u>Calculate ΔH°reaction

ΔH°reaction = ΣΔH°f (products) - ΣΔH°f (reactants)

ΔH°reaction = (ΔH°f (CaO) + ΔH°f (CO2)) -  ΔH°f (CaCO3)

ΔH°reaction = (-635.6 kJ/mol + -693.5 kJ/mol) + 1206.9 kJ/mol

ΔH°reaction = -122.2 kJ /mol

<u>Step 4:</u> Calculate moles of CO2

Moles CO2 = mass CO2 / Molar mass CO2

Moles CO2 = 68.10 grams / 44.01 g/mol

Moles CO2 = 1.547 moles

<u>Step 5:</u> Calculate the enthalpy change for 68.10 grams of CO2

-122.2 kJ/mol * 1.547 moles = -189.04 kJ

The enthalpy if 68.10 grams of CO2 is produced is  -189.04 kJ

7 0
3 years ago
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