Tris (as a pure compound normally supplied) is a base and its aqueous solutions are alcaline. It is not a buffer sensu stricto. To accumulate a buffering ability it sould be in equilibrium with the corresponding acid which is the protonated structure of Tris.
<h3>Is Tris damaging to humans?</h3>
The following acute (short-term) fitness consequences can also occur straight away or rapidly after publicity to Tris (2,3- Dibromopropyl) Phosphate: * Contact can irritate the pores and skin and eyes. * Tris (2,3-Dibromopropyl) Phosphate is a PROBABLE CARCINOGEN in humans.
<h3>Is Tris base toxic?</h3>
tris(hydroxymethyl)aminomethane
Potential Adverse human fitness effects and signs : Practically non-toxic. Non-toxic if swallowed (LD50 oral, rat > 5000 mg/kg). Non-toxic in contact with skin (LD50 skin> 5000 mg/kg). Not irritant to skin.
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The 8-Step Problem Solving Process is vital to solving problems in an organized way and it's an extended form of OODA Loop. Therefore, it's logically true.
The 8-Step Problem Solving Process include the following:
- Defining the problem.
- Clarifying the problem.
- Defining the goals.
- Identification of the root cause of the problem.
- Development of an action plan.
- Executing action plan.
It should be noted that the 8-Step Problem Solving Process was developed as an intended expansion of the OODA Loop. Therefore, the statement is true.
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Answer:
Rubidium-85=61.2
Rubidium-87=24.36
Atomic Mass=85.56 amu
Explanation:
To find the atomic mass, we must multiply the masses of the isotope by the percent abundance, then add.
<u>Rubidium-85 </u>
This isotope has an abundance of 72%.
Convert 72% to a decimal. Divide by 100 or move the decimal two places to the left.
- 72/100= 0.72 or 72.0 --> 7.2 ---> 0.72
Multiply the mass of the isotope, which is 85, by the abundance as a decimal.
- mass * decimal abundance= 85* 0.72= 61.2
Rubidium-85=61.2
<u>Rubidium-87</u>
This isotope has an abundance of 28%.
Convert 28% to a decimal. Divide by 100 or move the decimal two places to the left.
- 28/100= 0.28 or 28.0 --> 2.8 ---> 0.28
Multiply the mass of the isotope, which is 87, by the abundance as a decimal.
- mass * decimal abundance= 87* 0.28= 24.36
Rubidium-87=24.36
<u>Atomic Mass of Rubidium:</u>
Add the two numbers together.
- Rb-85 (61.2) and Rb-87 (24.36)
Proton number of a particular atom
The statement comparing ionic and covalent bonds which is correct is; Choice B; Covalent bonds tend to be less polar than ionic bonds
- Although, covalent bonds between atoms of different elements are characterized as polar bonds, but the degree of polarity varies widely. Some bonds between different elements are only minimally polar, while others are strongly polar.
Ultimately, Ionic bonds can be considered the extreme in polarity, with electrons being transferred rather than shared.
- Ionic bonds are formed between highly electropositive elements (metals) and highly electronegative elements (non-metals).
- Covalent bonds are characterized by the the sharing of electrons between atoms unlike the complete transfer of electrons in ionic bonds.
Among the choices, the statement which is correct when comparing covalent bond to ionic bond is: Choice B: Covalent bonds tend to be less polar than ionic bonds.
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