Tessa knows that the sea grape tree can grow well in areas of high st and poor soil. She has seen sea grape growing along the beach strands and coastal hammocks of south Florida. She sets up an experiment to see which amount of salt is best for sea grape. She chooses two plants. She gives pure water to the first plant and a strong salt water solution could Tessa do to improve her experiment? the econd. Then, she measures growth. ​

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:

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:

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:

  very unlikely to be found in dirt

Explanation:

That combination has a ratio of ¹⁴N to ¹⁵N of 10:4 = 2.5: 1. The most ¹⁵N enriched natural material has a ratio of ¹⁴N to ¹⁵N on the order of 250 : 1 or higher. The combination shown is very unlikely to be found in dirt.

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 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:

mostly gasoline in cars nowadays

Explanation:

ans b hcl and ccl4

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

Answer:

The mass of water to be added is 2 pounds

Explanation:

The given parameters are;

The mass of the given solution = 2 pounds

The concentration of the given solution = 30%

The desired concentration of the solution = 15%

The mass, m of the acetic acid in the given solution = 30% × 2 pounds

m = 30/100 × 2 pounds = 0.6 pounds

To make a 15% acetic acid solution of acetic acid, the mass X of the required volume, is given as follows;

15% of X = 0.6 pounds

15/100 × X = 3/20 × 0.6 pounds

∴ The mass of the solution required  X = 0.6 × 20/3 = 4 pounds

The mass of the solution that will contain 0.6 pounds of acetic acid giving a 15% acetic acid solution is 4 pounds

Therefore, the mass of water to be added to the original solution to make the a 15% acetic acid solution is 2 pounds.

Answer:

helping hand

Explanation:

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Answer:

Nuclear Fusion

The binding energy per nucleon curve (Figure 43.1) peaks at a nucleon number of about 56. This means that nuclei having A = 56 are more tightly bound than either less massive or more massive nuclei. Nuclear fission of nuclei with A ≈ 240 releases energy because the fragments have mass numbers closer to the A = 56 peak and are therefore more tightly bound. Nuclear reactions between light nuclei that produce more massive and more tightly bound nuclei also release energy. 

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:

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:

the citric acid in lemon juice is a natural bleach, or oxidizing agent. It whitens hair by chemically reducing your hair's color pigment, or melanin. When exposed to the sun, the citric acid accelerates the bleaching process

The process of rinsing freshly shampooed hair in diluted lemon juice or vinegar significantly shines hair through the process of chemical reduction of hair color pigment that is known as Melanin.

The function of diluted lemon juice is that the lemon juice remarkably consists the citric acid which is known as a natural bleach. It works as an oxidizing agent when it reacts with hair that contains a dark-colored pigment.

After performing the overall process, when your hair is directly exposed to the sun, it significantly enhances the process of bleaching which gives more shine to the hair. Vinegar balances the pH of your hair cleans out the hair shaft, and gives it a shine.

Therefore, the process of rinsing freshly shampooed hair in diluted lemon juice or vinegar significantly shines hair through the process of chemical reduction of hair color pigment that is known as Melanin.

To learn more about Lemon juice, refer to the link:

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Answer:

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Explanation:dsadasdasdasdasda

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:

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 .

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

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:

Answer:

Water is solvent and milk, tea powder and sugar is solute.

Explanation:

First take a specific mount of water in teapot which is a solvent and heat it for several minutes. After boiling of water, add 1 to 2 table spoon tea powder in water which is a solute and allow it for boiling. After that add milk and sugar according to your preference and tea is made which is a solution. The milk and sugar dissolve in the water but the tea powder did not dissolve so it can be filtrate with the help of filtration tool and all the residue trap at that tool while the tea is clean from all undissolved particles.

Answer:

The correct answer is location and depth

Explanation:

Correct on edge 2020

Answer:

B.) Location and Depth

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!      

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:

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:

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