Which of the following is not a type of adaptation? A. Functional B. Mechanical C. Behavioral D. Structural

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Answer 1

Answer:

B. Mechanical- is NOT a type of adaptation

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Of all boron atoms, 19.9%% are boron-10, which have a mass of 10.01294 amu. The other 80.1% of boron atoms are boron-11 and these have a mass of 11.00931. Calculate the average atomic mass of boron.

Answers

Answer:

10.81 amu

Explanation:

The average atomic mass of Boron can be calculated as follows :

$A=19.9\%\ \text{of}\ 10.01294 +80.1\%\ \text{of}\ 11.00931\n\nA=(19.9)/(100)* 10.01294 +(80.1)/(100)* 11.00931\n\nA=10.81\ \text{amu}$

So, the average atomic mass of boron is 10.81 amu.

Doing another onee! 50 points for answering thiss!

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Answer:

why u was giving free point and I think u have great day

Answer:

are you increasing your followers

Explanation:

if yes then I will follow you

12a. Do i need to find the morality of each ion in the solution to get to the moles? Or do i just do AlCl3

Answers

You just use the morality of the solution, you found out that you have 0.0046mol (about 0.005mol0 of AlCl3, so then since there is 1 Al in a single molecule, you have the number of moles of aluminum, but since there is Cl3 (3 atoms of chlorine per molecule), just multiply the number of moles of molecules by the number of atoms of that type inside a single molecule, to get [Cl-] = 0.0138mol (or round to 0.014)

If 41grams of water at 24°C absorbs 2208 J of heat energy, what will be the final temperature of the water?

Answers

The problem can solved using the heat equation which is expressed as:

H = mCΔT

where H is the energy absorbed or released, m is the mass of the substance, C is the specific heat capacity, and ΔT is the change in temperature.

2208 J = 41 g x 4.18 J/g·°C x ( T - 24 °C)
T = 36.88 °C

What do chemists measure concentration with?

Answers

how to calcutate concentration of solution.
there is 12gram of solute in a 36 gram solution
then you take 12 divided by 24 because 36-12=24 which is youe solvent

I think they use testubes.

When dissolved in water, an Arrhenius base yields(1) hydrogen ions (2) hydronium ions(3) hydroxide ions (4) oxide ions

Answers

Answer:

Hydroxide Ions

Explanation:

Acid and Bases are defined according to three different theories and concepts.

A) Arrhenius Concept

B) Lowry Bronsted Theory

C) Lewis Theory

According to Arrhenius Concept of Acid and Base, "Acid is any specie which when dissolved in water ionizes to produce H⁺ ions".

Examples:

HNO₃ → H⁺ + NO₃⁻

H₃PO₄ → 3 H⁺ + PO₄³⁻

While, "Bases are those species which when dissolved in water produces Hydroxyl Ions (OH⁻)".

Examples:

KOH → K⁺ + OH⁻

Ca(OH)₂ → Ca²⁺ + 2 OH⁻

Final answer:

When an Arrhenius base dissolves in water, it yields hydroxide ions (OH-).

Explanation:

When an Arrhenius base is dissolved in water, it yields hydroxide ions, which have a chemical formula of OH-. The formula for an Arrhenius base is usually represented as BOH, where B represents a cation (positive ion) and OH- represents the hydroxide ion. Some examples of Arrhenius bases include sodium hydroxide (NaOH) and potassium hydroxide (KOH).

Learn more about Arrhenius bases and hydroxide ions here:

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