before the quarry was dug, the land contained more vegetation . what impact has this change most likely had on the local ecosystem

The molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution is 2.3 M.

Molarity is defined as the ratio of number of moles of solute to the volume of the solution.

Molarity = number of moles of solute/ Volume of solution

Given,

given mass of sodium hydroxide= 20 g

Volume of the solution = 200 mL.

Firstly, we will calculate the moles of sodium hydroxide.

Mole is defined as the ratio of given mass of substance to the molar mass of substance.

Mole = given mass/ molar mass

Molar mass of sodium hydroxide = 40 g

Mole = 20/40

= 0.5 mol

Molarity = (0.5/ 200) × 1000 = 2.5M

Thus, we calculated that the molarity of a solution that contains 20.0grams of sodium hydroxide in 200. ml of solution is 2.3 M.

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Answer:

C. 101.2 L

Explanation:

N2 + H2= NH3

Balancing it,

N2 + 3 H2 = 2.NH3

(1 mol) (3 mol) (2 mol)

which means

1 molecule of nitrogen reacts with 3 molecule of hydrogen to form ammonia.

Likewise,

50.6 l of nitrogen reacts with 50.6 × 3= 151.8 l of hydrogrn to form 50.6 × 2= 101.2 l of ammonia.

Organic compounds;

Inorganic molecules;

An organic molecule are the molecules that contain long chains of carbon and are studied as part of organic chemistry. Inorganic compounds do not contain catenated carbon chains and are studied as part of inorganic chemistry.

Let us now classify the compounds;

Organic compounds;

Inorganic molecules;

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Answer:

Primary goals were to discover the complete set of human genes and make them accessible for further biological study, and determine the complete study of DNA cells in the human genome.

Explanation:

Scientists undertake the Human Genome Project to provide researchers with powerful tools to understand the genetic factors in human disease, paving the way for new strategies for their diagnosis, treatment and prevention.

The Human Genome Project was an international scientific research project with the goal of determining the base pairs that make up human DNA, and of identifying, mapping and sequencing all of the genes of the human genome from both a physical and a functional standpoint.

The main objective was to discover the complete set of human genes and make them accessible for further biological study, and determine the complete sequence of DNA bases in the human genome.

Hence, Scientists undertake the Human Genome Project to provide researchers with powerful tools to understand the genetic factors in human disease, paving the way for new strategies for their diagnosis, treatment and prevention.

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Answer:

ok

Explanation:

this is a picture of a city that we have made worse everyday

Answer:

Deposition

Explanation:

The process of deposition is when an object goes from a gas to a solid. In the picture, the first container had a gas (molecules were far apart). In the second, the molecules were tightly packed (a solid).

Hope this helps!

Answer:

Explanation:

Those are the answers in order, BUT the Goldstein and Rutherford ones are confusing me because Rutherford discovered protons and the nuclear atom. Through my research I also noticed that Goldstein contributed to the discovery of the protons made Rutherford, so I listed him as the one who discovered the proton.

I hope this helps! Have a wonderful night! :D

Answer:

There are three significant figures

Explanation:

When counting sig figs you don't count the zeros unless it is between a number greater than zero. The two zeros aren't between the greater numbers so there are only 3.

Answer:

I think 20

Explanation:

Becu of science

Answer:

To make a cloud, air needs only to be cooled to saturation and beyond. ... Usually the water vapor amounts in air are less that this amount. When this is the case, we describe the air as being unsaturated. If we add more vapor to such air, we could reach the maximum for the temperature

Explanation:

The atmospheric conditions required for the formation of clouds are , air needs only to be cooled to saturation and beyond formation of clouds and precipitation.

Precipitation is defined as any liquid or frozen water which forms in the atmosphere and then gets received on Earth.It is one of the most important steps of the water cycle.

Precipitation takes place in form of clouds when water vapor gets accumulated in clouds and they get bigger and heavy, when the clouds become heavy enough they fall to the land in the form of rain.f a cloud is present at higher altitudes , the water present in the clouds freezes and fall to the ground in form of snow,hail.

Precipitation occurs always in case of fresh water because the sea salt does not evaporate with the water.The different types of precipitation are rain, drizzle,snow,snow hail,etc.

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Answer:

375 grams

Explanation:

The percent yield if 155 grams of calcium carbonate is treated with 250 grams of hydrochloric acid and 142 grams of calcium chloride is obtained is 82.55%

Percent yield is defined as the amount of product actually made compared with the maximum calculated yield. It is the ratio of actual yield to the theoretical yield.

Mass of calcium carbonate = 155 g

Mass of HCl = 250g

Mass of calcium chloride product = 142 g

Moles of calcium carbonate = 155 / 100 = 1.55 moles

Moles of HCl = 250 / 36.5 = 6.85 moles

Mass of calcium chloride = Moles x Molar mass

                                          = 1.55 mole x 111 g/ mole

                                          = 172 g /mole

Theoretical yield = 172 g

Actual yield = 142 g

Percent yield = Actual yield / Theoretical yield x 100
                      = 142 / 172 x 100

                      = 82.55 %

Thus, the percent yield if 155 grams of calcium carbonate is treated with 250 grams of hydrochloric acid and 142 grams of calcium chloride is obtained is 82.55%

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Answer:

P₂ = 2.4 atm

Explanation:

Answer:

Phosphate, any of numerous chemical compounds related to phosphoric acid (H3PO4).

Answer: B

Explanation: intook the test

They all share genetic information as DNA, shaping their unique traits and functions through evolutionary processes.

Option (A) is correct.

The similarity among a peacock, a jellyfish, and a birch tree lies in the fact that they all share genetic information encoded in their DNA. Genetic information is the blueprint that determines an organism's traits, functions, and characteristics. Despite their diverse appearances and habitats, all living organisms, including these three examples, utilize DNA to carry hereditary instructions.

However, it's important to note that while they share genetic information, the way this information is expressed and the specific traits it codes for differ significantly among these organisms due to variations in their evolutionary history, adaptations, and environmental interactions.

This shared genetic foundation underscores the fundamental biological unity among all living beings on Earth, while the unique expression of this genetic information contributes to the incredible diversity of life forms.

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The complete question is:

How are a peacock, a jellyfish, and a birch tree similar?

A) They all share genetic information.

B) They all contain carbon.

C) They all reproduce the same way.

D) They all obtain energy in the same way.

Answer:

A precipitate will be formed, it will be Cu(OH)2.

Explanation:

This is due to it's solubility.

There will be a precipitate due the solubility which will be result in the Cu(OH)2 precipitate.

A double replacement reaction is a chemical reaction in which two reactant and product exchange cations or anions to produce two new products.

Double replacement reactions are also referred to as double displacement reactions or metathesis reactions.

The simplest way to detect a double displacement reaction is to see if the cations exchanged anions with one another.

If the states of matter are mentioned, look for soluble reactants and the creation of a single solid product, as the reaction typically produces a precipitate.

As a result of the solubility, a precipitate will form, resulting in the Cu(OH)2 precipitate.

Thus, this is the result of the reaction.

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Answer:

Explanatio≡

6.022

×

10

22

copper atomsn:

Answer:

WHY: You can abbreviate an element's electron configuration using the noble gas notation method because when you get down to the lower elements, specifically the d's and the f's, the electron configuration will be very long. The noble gas notation method is a faster answer while also being correct.

HOW: We can abbreviate an element's electron configuration by finding the last noble gas a specific element passed, for example calcium would have just passed Argon. Once you have the "address" of the previous noble gas, then you add on the difference between the element chosen and the noble gas, for example calcium would be [Ar] 4s^2.

Explanation:

Answer:

C - no antibodies

Explanation:

I dont think there is any blood type without antibodies

The unknown material : gold

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  

m = mass  

v = volume  

mass of unknown material : 15.06 g

volume : 0.78 ml

The density of unknown material :

[tex]\tt \rho=\dfrac{15.06}{0.78}\\\\\rho=19.31~g/ml[/tex]

Materials that match the density: gold

Answer:

kf

Explanation:

Answer:

protons and neutrons

Explanation:

Steel ball bearings and marbles can be separated through manual sorting due to their difference in appearance.

Before answering the question, let us define the given choices.

The given separation techniques are not suitable for the separation of steel balls bearings, and marbles. Instead, the sorting separation technique must be used. This is used for manually sorting coarse materials based on their physical characteristic, which in this case is their difference in appearance.

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Answer:

Explanation:

The final pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we are finding the new pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

From the question we have

[tex]P_2 = \frac{10 \times 2}{20} = \frac{20}{20} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

D i belive

Explanation:

Answer:

360 degrees

Explanation:

Answer:

longitude is vertical lattitude is horizontal

Explanation: