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3 years ago

-QUESTION 7-

2 answers:

4 0

The best answer is A. An example would be logging. A log truck takes wood from one place to another possibly carrying bugs or other organisms that are considered invasive species in the new location. I hope I helped.

Darina [25.2K]3 years ago

3 0

Answer:

Explanation:

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What is the common name of H2O

schepotkina [342]

H2O is also know as water

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4 years ago

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A cylindrical rod has a length of 27 cm and a diameter of 1.6 mm. What is the cross-sectional area in 10-6 m2?

MrRa [10]

Answer: The cross-sectional area of the cylindrical rod is $2.01\times 10^{-6}m^2$

Explanation:

We are given a cylindrical rod whose cross-sectional area will be in the form of circle.

To calculate the area of circle, we use the equation:

$\text{Area}=\pi r^2$

where,

r = radius of the rod = $\frac{d}{2}=\frac{1.6mm}{2}=0.8mm=0.8\times 10^{-3}m$ (Conversion factor: 1 m = 1000 mm)

Putting values in above equation, we get:

$\text{Area}=3.14\times (0.8\times 10^{-3})^2\\\\\text{Area}=2.01\times 10^{-6}m^2$

Hence, the cross-sectional area of the cylindrical rod is $2.01\times 10^{-6}m^2$

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3 years ago

What is the balanced equation for the combustion of 1-naphthol, c10h7oh, to give co2 and h2o? do not include phases.

shusha [124]

: 2 C10H7OH + 23 O2 → 20 CO2 + 8 H2O
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4 0

3 years ago

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Draw a hemiacetal, an acetal, and an imine that can be formed from propanal (C3H6O). Circle those that form in basic solution an

Paul [167]

Answer:

They are all formed in acidic solution.

Explanation:

The diagram for hemiacetal, acetal and imine is shown in the diagram below and a star is placed on the three of them since they are all form in acidic solution.

From the diagram; reaction of methanol with propanal leads to formation of hemiacetal. From CH₃OH(methanol), one hydrogen attaches itself to the Oxygen double bond on the propanal to form a new hydroxyl group, the other methoxyl (-O-CH₃) from methanol attaches itself to other part of the propanal.

The further addition of methanol to Hemiacetal yields to Acetal.

Imines are formed by Mannich Reaction which is the reaction of propanal with amine group and which is followed by the dehydration with a Schiff base.

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4 years ago

Write the reaction equation and equilibrium equation for dopamine

elena-s [515]

Answer:

The see explanation

Explanation:

In this case, we have an "amine" group in the dopamine structure. So, the dopamine will act as a "base". A base is a substance that has the ability to accept hydrogens, therefore, the $NH_2$ will take hydrogen from the water molecule. Additionally, the water will produce the $OH^-$ ion and the $NH_2$ will be converted into $NH^+_3$ .

See figure 1

I hope it helps!

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3 years ago