In dry climates, people often dig wells to find additional sources of water
to raise crops or feed livestock. Which of the following could be
significant negative effect on the environment cause by obtaining water
from the well?
Select one:

A: The digging will create air pockets in the soil.

B: Using the well could erode the soil and increased the risk for mountain
landslides.

C: Crushed rock and layers of soil might pile up where the well is dug

D: Using the well could lower the water table throughout the area.

Answer: Democritus atomic theory is the ancient theory that describes the nature of matter in terms of atoms whereas Dalton atomic theory is a modern scientific theory that describes the nature of matter in terms of atoms. According to Dalton's theory, atoms are identically same, but Democritus had no idea about it. Atoms are never created nor destroyed, they just rearrange.

Explanation:

Answer:

convection (I am pretty sure, I am sorry if it isnt right)

Explanation:

Answer:

Explanation:

0.25 M

The molarity of a solution will be 4.27M .

Molarity (M), often known as molar concentration, is the concentration of a solution expressed in moles of solute per liter of solution.

Solution can be considered as a mixture of more than one component. It may be homogeneous solution as well as heterogeneous solution.

Gram to mole conversion:

[tex]=\;2.75\;g.\;\frac{1\;mol}{58.44g} \\=\;0.0470 \;mol[/tex]

Molarity of the solution can be calculated by using the following formula:

It is calculated that, moles of solute = 0.0470 mol, volume of the solution = 1100 mL.

Now, put the value of given data in molarity formula:

[tex]Molarity=\frac{Moles\;of\;the\;solute}{Volume \;of\; the\; solution} \\=\frac{0.0470\;mol}{1100 \;mL} \\=\;4.27\;mol/mL\\=\;4.27\; M[/tex]

Therefore,  the molarity of a solution will be 4.27M.

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Answer:

canals and irrigation is the answer

Answer:

im gonna say A

Explanation:

i say A because i mean biotic potential is residing in the catagory birth rate which is how many the lay a year penguins have already reached the amount they are gonna lay robins the literally have no exact stop point its between 5 and 10 a year like said. so if u look at the amount they have each they have both reached there maximum point. but penguins only lay eggs once a year while robins well 5 to 10 reaching there maximum potential.

Answer:

Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.

Answer: So, why is the snow and ice blue? Similar to water, snow absorbs red and yellow light, leaving blue light behind to give it that bluish appearance. If snow is only a few inches deep, none of the light will be left behind, making the snow appear white. The deeper the snow, the more blue light is left behind.

Explanation:

Answer:

44.4%

Explanation:

The balanced chemical equation for the reaction is:

2 H₂(g) + O₂(g) → 2 H₂O(g)

According to the equation, 1 mol of O₂ produces 2 moles of water (H₂O). We convert the moles to grams by using the molecular weight (Mw) of each compound:

Mw(O₂) = 2 x 16 g/mol O = 32 g/mol

mass O₂ = 1 mol x 32 g/mol = 32 g O₂

Mw(H₂O) = (2 x 1 g/mol H) + 16 g/mol O = 18 g/mol

mass H₂O = 2 mol x 18 g/mol = 36 g H₂O

Thus, from 32 grams of O₂, 36 g of H₂O are produced (stoichiometric ratio= 36 g H₂O/32 g O₂). We calculate the amount of H₂O that would be produced from 20 grams of O₂ by multiplying the stoichiometric ratio by the mass of O₂, as follows:

36 g H₂O/32 g O₂ x 20 g O₂ = 22.5 g H₂O

The theoretical yield of H₂O is 22.5 g, and the actual amount produced is 10 g. So, we calculate the percent yield as follows:

Percent yield = actual yield/ theoretical yield x 100

                      = (10 g)/(22.5 g) x 100

                      = 44.4%

Answer:

The element is in group 7, the halogens. The element is in the third period or row of the table.

Explanation:

Chlorine is element number 17.

Answer:Magnesium (Mg) is a - reactant

Hydrogen (H2) is a - product

magnesium chloride (MgCI2) is a - product

hydrochloric acid (HCI) is a - reactant

Explanation: It’s in my notes

Answer:

false

Explanation:

It is the opposite. Atoms are the smallest.

Answer:

False

Explanation:

Pls mark brainliest :)

Answer:

1.3142 mol CoCl2

Explanation:

Well, to answer this we need to find out how many grams are in a single mole of CoCl2. Two find that we need to get the molar mass of CoCl2

Co = 28.0101 g Co per mole

Cl = 35.453 * g Cl per mole

28.0101 + 2 * 35.453 = 98.9161 g CoCl2 per mole

Now, we divide:

130/98.9161 = 1.3142 mol CoCl2

There are 1.31 moles in 130grams of cobalt chloride (CoCl2). Details about how to convert mass to moles can be found below.

The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass.

According to this question, there are 130g of CoCl2.

molar mass of CoCl2 = 28 + 35.5(2) = 99g/mol

moles = 130g ÷ 99g/mol

moles = 1.31 moles

Therefore, there are 1.31 moles in 130grams of cobalt chloride (CoCl2).

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Answer:

pH = 7 ⇒ [H⁺] = 1.0x10⁻⁷ M

pH = 5.6 ⇒ [H⁺] = 2.5x10⁻⁶ M

pH = 3.7 ⇒ [H⁺] = 2.0x10⁻⁴ M

H⁺ concentration in the Hubbard Brook sample is 80 times higher than in unpolluted rainwater.

Explanation:

To answer this problem we need to keep in mind the definition of pH:

Meaning that after isolating [H⁺] we're left with:

Now we proceed to calculate [H⁺] for the given pHs:

Finally we calculate how many times higher is [H⁺] when pH = 3.7 than when pH = 5.6.

Answer:

1. 7 (a neutral solution)

Answer: 10-7= 0.0000001 moles per liter

2. 5.6 (unpolluted rainwater)

Answer: 10-5.6 = 0.0000025 moles per liter

3. 3.7 (first acid rain sample in North America)

Answer: 10-3.7 = 0.00020 moles per liter

The concentration of H+ in the Hubbard Brook sample is 0.00020/0.0000025, which is 80 times higher than the H+ concentration in unpolluted rainwater.

Explanation: -

Answer:

What do you want answered?

Explanation:

Answer:

One mole of anything has 6.023 x 10^23 molecules.

That would mean 3.4moles of CO2 have 6.023x 10^23 times 3.0.

So that would be2.04782×10^24 molecules in 3.0 moles of C02.

Mole measure the number of elementary entities of a given substance that are present in a given sample. 2.047×10²⁴ molecules are found in 3.4 moles of carbon dioxide.

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.

Mathematically,

number of molecules of carbon dioxide = number of moles of carbon dioxide ×6.022×10²³ molecules

Number of moles of carbon dioxide=3.4moles

Substituting the values in the above equation we get

number of molecules of carbon dioxide =3.4moles×6.022×10²³ molecules

number of molecules of carbon dioxide =2.047×10²⁴

Therefore, 2.047×10²⁴ molecules are found in 3.4 moles of carbon dioxide.

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Answer:

Nope not all

Explanation:

As scientists says that not all give a solution.

Answer: Your answer would be  D

Explanation: Sorry if i get it wrong ! (but good luck and make sure to rate)

Answer:

D

Explanation:

because when it is winter

a bear hibernates in a cave

and eats lots of food so it

dosent starve after sleeping

for such a while.

Hope this helps

plz mark brainliest

if you would be so kind!

bye!

They burn fossil fuels, which releases huge amounts of sulfur dioxide and nitrogen oxide that pollute the air. ... Two thirds of all sulfur dioxide and more than one third of all nitrogen oxides that pollute the air.

Answer:

DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.

Explanation:

Answer:

In the social sciences, a social group is two or more humans who interact with one another, share similar characteristics, and have a collective sense of unity. This is a very broad definition, as it includes groups of all sizes, from dyads to whole societies.

Explanation:

Answer:

The meaning of social group is two or more people who interact with one another, share similar characteristics, and collectively have a sense of unity.

Explanation:

Hope this helped

Answer:

The ball speeds up

Explanation:

air

because air is compound discoverd in 1992

Answer:

Since the force applied at both ends is acting in opposite directions, then the resultant force becomes negative.

= 35 - 25 = 10

Explanation:

False, gray whales average 75 miles per day at a speed of 5 mph and is the longest annual migration of any mammal.

Answer:

That would be speed.

Explanation:

Answer:

I will take Aspirin if I had a headache

Answer: stable unmetal

Explanation: if you count electrons, you get 35 and it is element Br

According to the electronic configuration , the element with the given electronic configuration  is a unstable non metal.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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