please help with the last 2.

Answer:

By dehydrogenation of cyclohexane you may get Benzene as a product. We may use noble metals(Au, Ag, Pt etc.) to dehydration of cyclohexane. Consider following reaction which gives an idea about reaction.

Explanation:

I think it is the correct answer

i have read this in one of the book

Answer:

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Explanation:dsadasdasdasdasda

Answer:

Molecular formula is CaCl2 i.e. 1 atom of Ca and 2 atoms of Cl . Hence, molecular weight = 1 x 40 + 2 x 35.5 = 40 + 71 = 111 g / mol . But if you look at the weight online, it says 110.98 g / mol , which is close to 111

Explanation:

Hope this helped :)

Answer:

The d-block elements are all metals and most have one or more chemically active d-orbital electrons. Because there is a relatively small difference in the energy of the different d-orbital electrons, the number of electrons participating in chemical bonding can vary.

Answer:

Answer:

c

Explanation:

The chemical equation which is balanced is  C₅H₁₂+ 8 O₂ [tex]\rightarrow[/tex] 5 CO₂ + 6 H₂O which is a combustion reaction.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

Learn more about chemical equation,here:

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Answer:

The answer is

Explanation:

To solve the question we use the following conversion

That's

1 mmHg [tex]\cong[/tex] 0.0013 atm

So we have

If 1 mmHg [tex]\cong[/tex] 0.0013 atm

Then 732 mmHg will be

732 × 0.0013 atm

We have the final answer as

Hope this helps you

Answer:

Gas

Explanation:

Gasses will fill the shape whatever container they are in and can be compressed down into smaller volumes quite easily.

Solids have a definite shape and volume

liquids have an indefinite shape but a definite volume

Answer:

The correct answer is location and depth

Explanation:

Correct on edge 2020

Answer:

B.) Location and Depth

The number of electrons should be 9.

Given that,

Calculation of a number of electrons:

= Number of protons = Number of electrons

9 = Number of electrons

Therefore,

Number of electrons = 9

Find out more information about the electrons here: https://brainly.com/question/1255220?referrer=searchResults

Answer:

Explanation:

Density of a substance can be found by using the formula

[tex]Density( \rho) = \frac{mass}{volume} [/tex]

From the question

Density = 11.3 g/mL

mass = 105 g

Substitute the values into the above formula and solve for the volume

That's

[tex]11.3 = \frac{105}{v} [/tex]

Cross multiply

11.3v = 105

Divide both sides by 11.3

[tex]v = \frac{105}{11.3} [/tex]

v = 9.29203

We have the final answer as

Hope this helps you

Answer:

Matter is the "stuff" that makes up the universe everything that takes up space and has mass is matter.

All matter is made up of atoms, which are in turn made up of protons, neutrons and electrons

Matter itself must have mass irrespective of its state.

Matter is anything that has mass and occupy space. Matter exists in three states;

In all these states of matter, matter is made up of "stuff".  For instance, if a solid, liquid or gas is introduced into an empty bag attached to a scale, the bag will move downwards and the scale will record an increase in mass.

This shows that matter in solid, liquid or gaseous state all have mass.

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Answer:

13.57 approximately 14

Answer:

mostly gasoline in cars nowadays

Answer:

Digestion is not an example of combustion. Digestion is an endothermic process where energy is utilized to break down the complex food molecules into simple forms. In a combustion reaction carbon dioxide,water,energy and some by products are released.

Explanation:

Answer:

helping hand

Explanation:

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Answer:

The correct option is A

Explanation:

An independent variable is a variable that is intentionally altered (directly or indirectly) and is not dependent on another variable in the course of an experiment. Unlike the independent variable, the dependent variable depends or is presumed to depend on the altered independent variables.

From the explanation above, it can be deduced that the concentration of the catalase is the independent variable as it was intentionally altered (by using different concentrations) in the course of the experiment. The amount of oxygen given off is the dependent variable here

Answer:

You can find the volume of an irregular object by immersing it in water in a beaker or other container with volume markings, and by seeing how much the level goes up. You can use this relation backwards too -- if you know what material an object is made of, you can look up its density in a book. hOPE THIS HELPS! =)

Answer:

Explanation:

chemical energy of 1 kg coal is 3 million joules .

If this energy is used to lift one kg of coal , let height attained be h

chemical energy = gravitational energy of 1 kg of coal

3 x 10⁶ = m g h = 1 x 10 x h

h = 3 x 10⁵ m

= 300 x 10³ m

= 300 km .

i kg coal can be lifted by height of 300 km .

Given :

The density of gold is [tex]19.3 \ g/cm^3[/tex] and the density of lead is [tex]11.4\ g/cm^3[/tex] respectively .

To Find :

Which have greater volume .

Solution :

We know , density is given by :

[tex]\rho=\dfrac{mass}{volume}[/tex]

Now , volume of 5 gm gold .

[tex]Volume=\dfrac{mass}{\rho}\\\\Volume =\dfrac{5}{19.3}\ cm^3\\\\Volume =0.26\ cm^3[/tex]

Also , volume of 5 gm lead .

[tex]Volume=\dfrac{mass}{\rho}\\\\Volume =\dfrac{5}{11.4}\ cm^3\\\\Volume =0.44\ cm^3[/tex]

Therefore , volume of lead will be greater than gold.

Hence , this is the required solution .

Answer:

pH = 10

Explanation:

pH = -log [H⁺]

A solution that is pH = 4 has a [H⁺] = 1x10⁻⁴M

As the mixture of the two solutions is pH = 7 (Neutral). The second solution must contain the exact amount of OH⁻ to neutralize the H⁺ of the first solution. That is [OH⁻]  1x10⁻⁴

And as pOH = -log [OH⁻]

pOH = -log 1x10⁻⁴

pOH = 4

Also, pH = 14-pOH

pH of the second solution must be:

14 - 4

Answer:

355.24 - 0.954 = 354.29

Sig Figs  = 5

Decimals  = 2

Scientific Notation  ;

[tex]3.5429 \times 10^2[/tex]

Explanation:

Answer:

V = 9.0037

Explanation:

V = M/D

V = 122/13.55

V = 9.0037

Explanation:

ans b hcl and ccl4

both these compounds are formed by sharing of electrons......

Answer:

The average rate of climb in miles per minute is 8.2x10⁻⁴ miles/min.

Explanation:

The average rate can be calculated as follows:

[tex] \overline{v} = \frac{y_{f} - y_{0}}{t_{f} - t_{0}} [/tex]

Where:

[tex]y_{0}[/tex]: is the initial height = 24976 ft

[tex]y_{f}[/tex]: is the final height = 29035 ft

[tex]t_{0}[/tex]: is the initial time = 0

[tex]t_{f}[/tex]: is the final time = 15 hr, 35 min = 935 min      

Then, the average rate of climb in miles per minute is:

[tex] \overline{v} = \frac{y_{f} - y_{0}}{t_{f} - t_{0}} [/tex]

[tex] \overline{v} = \frac{29035 ft - 24976 ft}{935 min - 0} = 4.34 \frac{ft}{min}*\frac{1 mile}{5280 ft} = 8.2 \cdot 10^{-4} miles/min [/tex]      

Therefore, the average rate of climb in miles per minute is 8.2x10⁻⁴ miles/min.

I hope it helps you!      

Answer:

As we all are aware that life on Earth is existed due to several environmental changes and there are several scientific factors of sustainability that support the survival and evolution of life on Earth.

Scientific factors of sustainability include solar energy, chemical cycle, and biodiversity that supported life on Earth. solar energy helps all organism and especially producers to gain energy and store the energy which further used in chemical cycles of transferring energy to other trophic levels.

Chemical cycle also involves the interaction of biotic and abiotic envrionment with each other that leads to environmental changes as well as organisms adapt themselves accordingly.

Biodiversity maintains the balance in the ecosystem and prevent dominancy of one organism otherwise it can lead to scarcity and organism would not be able to survive. Variation in biodiversity due to random mating  in the same species leads to evolution and produces new species of organisms.  

Hence, scientific factors of sustainability play major role in survival and evolution of life on the Earth.

Answer:

37.3

263.5

Explanation:

The scale measures hundreds of units, tens of units, units, and parts of units (1 decimal place.

Scale 1

Hundreds 0 * 100 = 0

Tens: 3 * 10 = 30

Units: 7 * 1 = 7

1/10 unit = 3* 0.1 = 0.3

Total 30 + 7 + 0.3 = 37.3

Scale 2

Hundreds 2 * 100 = 200

Tens: 6 * 10 = 60

Units: 3 * 1 = 3

1/10 unit = 5* 0.1 = 0.5

Total = 200 + 60 + 3 + 0.5 = 263.5

Is the range by number of protons sorry if I'm wrong

Answer:

Is the range by number of protons sorry if I'm wrong

Explanation: