After creating a Beer's Law plot using standard solutions of Q, you determined the slope of Beer's Law to be 0.543 M-1. Your unknown solution of Q tested in Part B of the experiment had an absorbance of 0.144. Determine the concentration (in molarity) of the unknown solution Q from Part B. Do not use scientific notation or units in your response. If Carmen adds zeros after the decimal place, your answer will still be graded correctly.

Answer:

They are lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

Hope this helps :)

Answer:

Groups one of the periodic table.

Lithium    Li

Sodium       Na

Potassium     K

Rubidium        Rb

Cesium        Cs

Francium     Fr

Answer:

E. 1.18x10^4nm/ms^2

Explanation:

The aceleration of the train is given in m/s². We need to conver, first, the meters to nm and then, the seconds to ms as follows:

11.8m/s² * (1x10⁹nm / 1m) = 1.18x10¹⁰nm / s²

Now, as 1s is equal to 1000ms:

1.18x10¹⁰nm / s² * ((1s)² / (1000ms)²)) =

1.18x10⁴nm / ms²

Thus, right option is:

E. 1.18x10^4nm/ms^2

Final answer:

A train's acceleration of 11.8 m/s^2 converts to 11.8*10^7 nm/ms^2 while converting from meters to nanometers and from seconds squared to milliseconds squared.

Explanation:

To convert a value from meters (m) to nanometers (nm), we must multiply by the conversion factor of 1×10^9nm/1m. A nanometer is one billionth (10^-9) of a meter. In this case, the train is accelerating at 11.8 m/s2. Therefore, the acceleration in terms of nanometers per second squared (nm/s2) is 11.8 * 109 nm/s2. To convert this value to nanometer per millisecond squared (nm/ms2), we know there are 1000 milliseconds (ms) in a second (s). Hence, we divided by 1000 squared, resulting in 11.8 * 109 nm/s2 divided by 10002 to get the answer in (nm/ms2). This gives us 11.8*107 nm/ms2, so the correct answer is C.

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The combustion reaction of the unknown compound can be written as follows:

Other part of the question is discussed below:

We know that 3.50 g of the compound produced 5.13 g of carbon dioxide and 2.10 g of water. This means that 1.63 g of oxygen were also produced in the reaction.

The mass of oxygen in the original sample is equal to the mass of oxygen produced in the reaction, so the original sample contained 1.63 g of oxygen.

The total mass of carbon and hydrogen in the original sample is equal to the mass of the sample minus the mass of oxygen, which is 3.50 g - 1.63 g = 1.87 g.

We can find the number of moles of hydrogen in the original sample by dividing the mass of hydrogen by the molar mass of hydrogen (1.008 g/mol). This gives us 1.87 g / 1.008 g/mol = 1.86 moles of hydrogen.

Therefore, the answer is 1.86

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Final answer:

By dividing the mass of water produced in combustion by the molar mass of Hydrogen in water, we find that the original compound contained 1.05 mol of Hydrogen.

Explanation:

To determine the mole amount of Hydrogen in the compound, you have to consider the reaction applied, and how it applies to the law of conservation of mass. Combustion of the compound produces carbon dioxide (CO2) and water (H2O). For water, one mol equals to the molar mass of H which is 1 g/mol, times the amount of H in water which is 2 to get 2 g/mol. Now knowing that 2.10 g of water were produced from combustion, we divide this by the molar mass of H-in-water to get the number of hydrogen moles in the original sample. So, the calculation will be 2.10 g/ 2 (g/mol) = 1.05 mol. So, the original compound contained 1.05 mol of hydrogen.

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The correct answer is False

Explanation:

A limiting factor refers to a condition that stops or limits the growth of a population of any species. Some of these factors include the availability of sources such as food, shelter or water; predation; natural weather conditions; natural disasters; and competence.

The previous idea implies food is not the only factor or condition that would stop or limit the growth of a population but there are many other factors that could prevent a population from growing too large, this includes abiotic factors (nonliving condition) such as weather and biotic factors (living condition) such as competition with other species or individuals or predation.

Food is not the only limiting factor that keeps populations from growing too large. This statement is false.

Populations are regulated by a variety of factors, including but not limited to food availability. These factors can be categorized into two main types: density-dependent and density-independent factors.

Density-dependent factors are influenced by population size and include factors such as competition for resources (including food), predation, disease, and territoriality.

As a population grows, competition for limited resources, including food, increases. This can lead to reduced growth, increased mortality, and ultimately limit the population's size.

Thus, while food availability is an important factor in population dynamics, it is not the sole limiting factor. Other ecological factors and interactions within the ecosystem play significant roles in regulating population size and preventing populations from growing too large.

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Answer:

tendons and ligaments

B. Mechanical-  is NOT a type of adaptation