Compare and contrast how observations and results can be used tosupport a conclusion to an experiment.

Answers

Answer 1

Answer:

Answer:

by statistical analyses, especially by determining the p-value

Explanation:

In general, observations and results obtained from experimental procedures are subjected to a statistical test to check the robustness of the working hypothesis. The p-value is the most widely used statistical index in order to test such observations and results. The p-value is the statistical probability of obtaining extreme observed results when the null hypothesis is considered correct. A p-value lesser than 0.05 generally is considered statistically significant and then the null hypothesis can be rejected. In consequence, a very low p-value (which is obtained by statistical analysis of the observations and results), indicates that there is strong evidence in support of the alternative hypothesis.

Related Questions

What does it mean when say that a 200-ml sample and a 400-ml sample of a solution of salt have the same molarity? In what ways are the two samples identical? In what ways are these two samples different?
1) How many kJ are absorbed when 45.2 g of water at 31.3 oC is heated to 76.9 oC? 2) Calculate the total heat released in kcal when 72.1 g water at 25.2 oC is cooled to 0 oC and freezes. 3) How many kilojoules are required to heat 55,500 mg of gold with specific heat = 0.129 J/g oC is heated from 24.6 oC to 123.4 oC? 4) Calculate the heat needed in kcal to change 45.6 g of water at 100 oC to change into steam.
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Ammonium nitrate dissociates in water according to the following equation:43() = 4+()+03−()When a student mixes 5.00 g of NH4NO3 with 50.0 mL of water in a coffee-cup calorimeter, the temperature of the resultant solution decreases from 22.0 °C to 16.5 °C. Assume the density of water is 1.00 g/ml and the specific heat capacity of the resultant solution is 4.18 J/g·°C.1) Calculate q for the reaction. You must show your work.2) Calculate the number of moles of NH4NO3(s) which reacted. You must show your work.3) Calculate ΔH for the reaction in kJ/mol. You must show your work.

In our modern view of matter and energy, is the law of mass conservation still relevant to chemical reactions? Explains

Answers

Explanation:

Law of conservation of mass states that mass can neither be created nor it can be destroyed but it can be transformed into one form to another.

Similarly, law of conservation of energy states that energy can neither be created nor it can be destroyed as it can only be transformed from one form to another.

In modern view of matter and energy, is the law of mass conservation still relevant to chemical reactions as follows.

For example, $2Na + Cl_(2) \rightarrow 2NaCl$

Atomic mass of Na = 23

Atomic mass of Cl = 35

Hence, mass of total number of reactants is calculated as follows.

[(2 \times 23) + (35 \times 2)] g/mol = 116 g/mol

Mass of total number of products is calculated as follows.

[2 \times (23 + 35)] = 116 g/mol

Thus, it is proved that in our modern view of matter and energy, is the law of mass conservation still relevant to chemical reactions.

Select the correct answer.Which is an example of a solution?
O A. flour and water
O B. sand and water
O c.
salt and water
O D.
oil and water
O E. ice and water

Answers

Final answer:

An example of a solution is salt and water.

Explanation:

An example of a solution is salt and water. When salt is mixed with water, it dissolves and forms a homogeneous mixture where the salt particles are evenly distributed throughout the water.

Learn more about solutions here:

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Which substance is most likely a lipid? -long chains of molecules composed of carbon, hydrogen, and oxygen atoms -compounds that are composed of amino acids and atoms, such as nitrogen, that are joined together by peptide bonds -a nonpolar organic compound that is insoluble in water -a molecule that constitutes the building blocks of more complex molecules that are soluble in water

Answers

Answer:

The answer is

Explanation:

- A nonpolar organic compound that is insoluble in water

Answer:

A nonpolar organic compound that is insoluble in water

Explanation:

For your sink at home, the flow rate in is 5000 units/hr. Accumulation is 2500 units. What is the accumulation rate if the out flow is 60 units/min? multiple choicea) 2400 units/hr b) 400 units/hr c)100 units/hr d) 1400 units/hr e) 3400 units/hr

f) other ____________________

Answers

Answer:

Option d) 1400 units/hr

Explanation:

Using law of conservation of mass, you can do a mass balance or volume balance:

Volume in - Volume out = Volume accumulation

If you divide by time unit, you get flow balance:

Volume in / time - Volume out / time = Volume accumulation / time

Flow rate in - Flow rate out = Accumulation rate

Here you have:

Flow rate in = 5000 units/h

Flow rate out = 60 units/min

Convert to rate in units/h: (60 units /min) × (60 min/h) = 3600 units/h

Flow rate out = 3600 units/h

Then:

Accumulation rate = 5000 units/h - 3600 units/h = 1400 units/h

Saved Propane burns in air according to the equation C3Ha(g 502lg)3CO2) + 4H20(g) What volume of O2 in liters would be required if 15.0 L of propane burns, assuming that all of the gases are under the same conditions? Short Answer Toolbar navigation E I E B IUS EA This question will be sent to your Instructor for grading. 20 of 25 l Next > Prev nere to search

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Answer: 75 liters of $O_2$ in liters would be required if 15.0 L of propane burns, assuming that all of the gases are under the same conditions.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 Lat STP and contains avogadro's number $6.023* 10^(23)$ of particles.

To calculate the number of moles, we use the equation:

$\text{Number of moles of propane}=\frac{\text{Given volume}}{\text{Molar volume}}=(15.0L)/(22.4L)=0.67moles$

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

According to stoichiometry:

1 mole of propane combines with = 5 moles of oxygen

Thus 0.67 moles of propane combine with = $(5)/(1)* 0.67=3.35moles$

Volume of $O_2=moles* {\text {Molar Volume}}=3.35* 22.4L=75L$

Thus 75 liters of $O_2$ in liters would be required if 15.0 L of propane burns, assuming that all of the gases are under the same conditions.

Explain what the police siren sounds like to Jane. Explain what the police siren sounds like to John. Explain why the police siren sounds different between Jane and John.

Answers

Like siren They all sound the same

its moving toward jane and away from john. it sounds different because of the wave sound

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