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diamong [38]
2 years ago
15

Plz answer this i will mark brainly like and ratr

Chemistry
1 answer:
matrenka [14]2 years ago
4 0

Answer:

answer what ?

Explanation:

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With radiocarbon dating, scientists compare an object's carbon-14 levels with _____. the carbon-14 levels of an object from the
trapecia [35]

Answer:carbon-14 levels in the atmosphere

Explanation:

When carrying out radiocarbon dating, the level of carbon-14 in a sample is compared with the level of carbon 14 in the atmosphere because, objects exchange carbon-14 with the atmosphere.

Comparison of the activities of carbon-14 in the atmosphere and in the sample gives the age of the sample since the half-life of carbon-14 is a constant.

5 0
3 years ago
The hydroxide ion concentration of a saturated solution of ca(oh)2 is m. what is the solubility product constant for ca(oh)2
dalvyx [7]
Solubility product constants are values to describe the saturation of ionic compounds with low solubility. A saturated solution is when there is a dynamic equilibrium between the solute dissolved, the dissociated ions, the undissolved and the compound. It is calculated from the product of the ion concentration in the solution. For the base, Ca(OH)2, the dissociation would  be as follows:<span>

Ca(OH)2 = Ca2+ + 2OH-

So, the expression for the solubility product constant would be as follows:

Ksp = [Ca2+] [OH-]^2

let x be the concentration of the Ca2+. So,

</span>
Ksp = [x] [2x]^2
<span>Ksp = 4x^3

You have to substitute the value of the concentration of the calcium hydroxide in the final expression which is not given in the problem statement in order to evaluate Ksp.
</span><span>
</span>
6 0
3 years ago
When you drain the solution from the bottom, the concentration will:
djverab [1.8K]

.Answer:

stay the same the conc. of a solution is the same throughout the liquid

Explanation:

3 0
3 years ago
Background Info:
Sindrei [870]
You will get at first carbon dioxide by burning C:
C+O_2=CO_2
Burn hydrogen to obtain water:
H_2+\frac{1}{2}O_2=H_2O
Combine them:
CO_2+H_2O=H_2CO_3
Now react it with Ba:
Ba+H_2CO_3=BaCO_3+H_2
To sum up, the reaction is Ba+C+\frac{3}{2}O_2=BaCO_3, using hydrogen as a catalyst.
6 0
3 years ago
Read 2 more answers
Two scientists work together on an experiment but they have different hypothesis when the scientist look at experimental results
a_sh-v [17]

Answer: Option (d) is correct.  

EXplanation:

The susceptibility to search for interpreted data in such a way that confirms the hypothesis is known as confirmation bias.

Scientific consensus is the collective decision or opinion of scientists in an experiment or study.

Peer view is the collective view of two or more persons in an experiment that will lead to a collective conclusion.

Selection bias is the bias that occurs because of selection of data due to which proper results are not obtained.

Therefore, when two scientists work together on an experiment but they have different hypothesis and when the scientist look at experimental results they interpret the data in different ways and come up with different conclusions, this situation is a confirmation bias.

Thus, out of the given options, option (d) is correct.  

3 0
3 years ago
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