A stone weighing 1. 5 kilograms is resting on a rock at a height of 20 meters above the ground. The stone rolls down 10 meters and comes to rest on a patch of moss. The gravitational potential energy of the stone on the moss is joules. (Use PE = m × g × h, where g = 9. 8 N/kg. )

Answer:

its A

Explanation:

Ozone is beneficial to living organisms.

Ozone (O3) is a very reactive gas that consist of of three oxygen atoms. It is both a naturally occurring and a man-made product that is located in the Earth's upper atmosphere. The stratosphere and troposphere is where ozone is found . Ozone affects life on Earth in either good or bad ways.

Therefore, ozone is beneficial to living organisms has it prevent the passage of harmful radiation which can harm living organisms.

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Answer:

Lichens can be used as air pollution indicators, especially of the concentration of sulphur dioxide in the atmosphere. Lichens are organisms that grow in exposed places such as rocks or tree bark. They need to be very efficient at absorbing water and nutrients to grow there.

The law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

In other words, as the quantity of one good increases, the individual is willing to sacrifice fewer units of the other good to obtain an additional unit of the first good. This reflects a diminishing rate of substitution between the two goods.

The reason why the law of diminishing marginal rate of substitution suggests that isoquants must be bent toward the origin is rooted in the concept of diminishing marginal utility. As more units of a particular input (e.g., labor or capital) are added while holding other inputs constant, the additional output gained from each additional unit of the input will decrease. This diminishing marginal productivity leads to a decreasing MRS.

When isoquants (which represent different combinations of inputs that produce the same level of output) are bent toward the origin, it reflects the fact that as more of one input is used, the amount of the other input that needs to be substituted decreases. This bending signifies the diminishing MRS and captures the idea that a larger quantity of one input can be substituted for a smaller quantity of the other input to maintain the same level of output.

Overall, the law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

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Answer: the answer is a=10m/s^2 right

Explanation: it just make more since then the other answers .

Answer:

c 10

Explanation:

ape.x verified

The general equation for a double-displacement reaction is

A + BX ---> AX + B or AX + BY ---> AY + BX

Here, A and B represent two different chemical species (such as ions or molecules), and X and Y represent their respective chemical partners.

The positively charged species (A and B) exchange partners (X and Y) in a double displacement process to create new compounds (AX and BY). Because the positively charged species "switch" partners, this kind of reaction is often referred to as a "swap" reaction.

Double-displacement reactions include the following examples:

1. The transformation of silver nitrate (AgNO3) into sodium nitrate (NaNO3) by the reaction of sodium chloride (NaCl) and AgNO3:-

NaCl(aq) + AgNO3(aq) AgCl(s) + NaNO3(aq)

2. The transformation of barium chloride (BaCl2) into barium sulfate (BaSO4) and sodium chloride (NaCl) via the following equation:-

BaCl2(aq) + Na2SO4(aq) BaSO4(s) + 2NaCl(aq)

Depending on the chemical makeup of the reactants, not all double-displacement reactions are metathesis reactions, it is crucial to keep in mind.

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Answer:

Ammonia

Explanation:

I believe that ammonia is the correct answer to this question.

We know that,

Thus,

The atoms of $ \sf{ 6.02 \times 10^{13}}$ will weigh;

\( = \sf{\frac{13.8 \times 6.02 \times {10}^{23} }{4.6 \times {10}^{22} } } \\ \)

\( = \sf{180.6 \: g \: \: (molar \: mass)}\)

One gold atom's diameter in meters would be: One gold atom has a diameter of 4.00 10( −⁷) meters, or 2400.

Thus, This expression can be calculated to determine the exact value for one gold atom's diameter in meters. 2400 atoms make up the gold foil.

The number of atomic layers in the gold foil can be used to describe its thickness. Thus, the thickness of one atomic layer is equal to the thickness in meters divided by the quantity of atomic layer.

One gold atom's diameter is equal to the thickness of one atomic layer divided by the number of atoms in that layer.

Thus, one gold atom's diameter in meters would be: One gold atom has a diameter of 4.00 10(-7) meters, or 2400.

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Answer:

Please find the answers to the frequency and energy to each question below

Explanation:

Using the formulas;

λ = v/f

E = hf

Where;

λ = wavelength (metres)

v = speed of light (2.998 × 10^8 m/s)

f = frequency (Hz)

E = Energy of photon (J)

h = Plancks constant (6.63 × 10^-34 J.s)

1.) λ = 568cm = 5.68m

f = v/λ

f = 2.998 × 10^8 ÷ 5.68

f = 0.5278 × 10^8

f = 5.278 × 10^7 Hz

E = hf

E = 6.63 × 10^-34 × 5.278 × 10^7

E = 34.99 × 10^(-34+7)

E = 3.499 × 10^-26 J

2). λ = 726cm = 7.26m

f = v/λ

f = 2.998 × 10^8 ÷ 7.26

f = 0.413 × 10^8

f = 4.13 × 10^7 Hz

E = hf

E = 6.63 × 10^-34 × 4.13 × 10^7

E = 27.38 × 10^(-34+7)

E = 2.74 × 10^-26 J

3). λ = 482cm = 4.82m

f = v/λ

f = 2.998 × 10^8 ÷ 4.82

f = 0.622 × 10^8

f = 6.22 × 10^7 Hz

E = hf

E = 6.63 × 10^-34 × 6.22 × 10^7

E = 41.24 × 10^(-34+7)

E = 4.124 × 10^-26 J

4). λ = 879cm = 8.79m

f = v/λ

f = 2.998 × 10^8 ÷ 8.79

f = 0.341 × 10^8

f = 3.41 × 10^7 Hz

E = hf

E = 6.63 × 10^-34 × 3.41 × 10^7

E = 22.61 × 10^(-34+7)

E = 2.26 × 10^-26 J

5). λ = 167cm = 1.67m

f = v/λ

f = 2.998 × 10^8 ÷ 1.67

f = 1.795 × 10^8

f = 1.795 × 10^8 Hz

E = hf

E = 6.63 × 10^-34 × 1.795 × 10^8

E = 11.9 × 10^(-34+8)

E = 1.19 × 10^-25 J

6). λ = 572cm = 5.72m

f = v/λ

f = 2.998 × 10^8 ÷ 5.72

f = 0.524 × 10^8

f = 5.24 × 10^7 Hz

E = hf

E = 6.63 × 10^-34 × 5.24 × 10^7

E = 34.74 × 10^(-34+7)

E = 3.474 × 10^-26 J

Explanation:

................easy ngl

Answer:

for protons going down it is:

(already given)

6

6

8

8

17

17

for neutrons going down it is:

6

7

8

(already given)

10

18

20

for electrons going down it is:

6

6

8

8

(already given)

17

Explanation:

bascially the number of protons is the bottom number to the left and the number of electrons is the same as the number of protons and the number of neutrons is basically the mass number (the top right one) minus the proton number

hope this helps:)

When phenylacetic acid is treated with LiAlH4 followed by \(H_{2} 0\), the major product obtained is 2-phenylethan-1-ol. This reaction involves the reduction of the carbonyl group in phenylacetic acid to a primary alcohol group, with LiAlH4 serving as the reducing agent. LiAlH4 reduces the carbonyl group of phenylacetic acid to an alcohol, forming 2-phenylethanol (Option D).

The reaction proceeds through the formation of an intermediate aldehyde, benzaldehyde, which is then reduced to the desired alcohol product. This process of carbonyl reduction is a common reaction in organic chemistry and is used to synthesize a variety of alcohols. The use of LiAlH4 is favored over other reducing agents because it is a strong reducing agent and can reduce many other functional groups besides carbonyls.

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Full Question ;

What is the major product obtained when phenylacetic acid is treated with the following reaction conditions? A benzyl alcohol B benzaldehyde phenylacetate (conjugate base of phenylacetic acid) C D 2-phenylethan-1-ol он 1) LiAIH 0 2) HyO 2 attempts left.

Answer: Exothermic reactions are reactions or processes that release energy, usually in the form of heat or light.

Explanation: In an exothermic reaction, energy is released because the total energy of the products is less than the total energy of the reactants.

The covalent bonding in molecules is mainly explained on the basis of Lewis structures. The concept of covalent bond is explained by the scientist G.N. Lewis.

In Lewis structures, dots are used to represent the electrons. The Lewis structures are also called the Lewis dot structure. They provide a picture of bonding in molecules in terms of the shared pairs of electrons and the octet rule.

The number of bonds present in CaBr₂ is two. Here 'Ca' is a metal and 'Br' is a non-metal. So calcium shares its electrons with 'Br' and thereby complete the octet.

The Lewis structure is given below:

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Your question is incomplete but most probably your question was:

One of the ways james has learned to modle chemical reasctions is by using lewis dot structure what is the correct Lewis dot structure is the for the compound calcium bromide.

Answer:

because the water/air needs to be pumped out.

Explanation:

hoped this helped! (just give it a 1 star if it didn't)

Answer:

Im like 75% sure that the answer is C.

Explanation:

Hope this helps! Have a great day. Remember your amazing and you got this! Alycia <3

Answer: A. pH + pOH = 14

Explanation:

I got it right on the test. Hope this helps!! :)

Answer:

Explanation:

Baby pigs, dolphins, bats and elephants all drink milk! Because the babies rely on their mother's milk to live, the mammal mommies have to care for their young. ... Through copying their mothers, baby mammals learn everything they need to survive

Answer:

by be young

Explanation:

wow just use you brain

Protons All Elements' Neutrons & Electrons (List + Images) Atomic number: all protons, neutrons, and electrons 5 Boron is made up of 5 protons, 6 neutrons, and 5 electrons.

6 Carbon consists of 6 protons, 6 neutrons, and 6 electrons. Protons, neutrons, and electrons total seven for nitrogen. Oxygen contains 8 protons, 8 neutrons, and 8 electrons. 34 more rows

Protons All Elements' Neutrons & Electrons (List + Images) 1 Atomic number All Elements Have Two Electrons. Diagram of 3 Shells 4 Neon Magnesium (5) Aluminum 6 Phosphorus 7 Sulfur 8 9 Argon Potassium 10 More things...

All elements' protons, neutrons, and electrons Diagram of a shell One proton, zero neutrons, and one electron make up hydrogen. Helium contains two protons, two neutrons, and two electrons.

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Answer:

4834.20 ml or 4.8342 L

Explanation:

Gold has density of 19.30 g/ml

so according to d = m/V

V = m/d = 93,300/19.30 = 4834.19689119 = 4834.20 ml or 4.8342 L

The volume of nuggets of gold that has a mass of 93,300g is 4834.20 ml or 4.8342 L.

Volume is the space occupied by a three-dimensional object.

Density is the mass per unit volume. Density is a scalar quantity. It is denoted by d and the symbol for density is given as rho, a Greek symbol. Density is calculated as mass divided by volume.

Density is directly proportional to mass and inversely proportional to volume. Thus, with an increase in density, mass increases and volume decreases, and vice-versa

Gold has a density of 19.30 g/ml

so according to density = mass/ volume

V = m/d = 93,300 / 19.30 = 4834.19

4834.20 ml or 4.8342 L

Therefore, the volume of nuggets of gold that has a mass of 93,300g is 4834.20 ml or 4.8342 L.

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Answer:

H2SO4 (sulphuric acid) is considered a strong acid because it's H+ ions completely dissociates or ionizes in a water. When reacted with phenolphthalein is colourless because phenolphthalein doesn't react with acids, only strong bases and when reacted with methyl orange, it changes from orange to red.

Explanation:

A tank contains 8l of water in which is dissolved 32 g (grams) of chemical. a solution containing 2 g/l. The amount of chemical in the tank after 20 minutes is 98.66 g.

Given that:

rate r1 = 4 L/min

rate r2 = 2 L/min

concentration c1 = 2 g/L

V(0) = 8 L

A(0) = 32 g

the equation is given as :

ΔV = r1 Δt - r2Δt

dV/dt = 2

integrating the condition , we get

V(t) = 2(t+4)

ΔA  = c1r1 Δt - c2r2 Δt

dA/ dt = 8-2c2

c2 = A/ V

dA/dt = 8 - 2A/ V

now by putting the value of V, we get

dA / dt + 1 / t + 4 A = 8

linear equation has integrating factor :

I = e^ ∫ 1/( t + 4) dt = t + 4

d [ ( t + 4)A] / dt = 8 (t + 4)

(t+ 4 )A = 4(t + 4)² + c

A(t) = (1 / t + 4 ) [ 4(t + 4)² + c]

A(0) = 32 means c = 64

A(20) = (1/6) [(24)² + 16]

          = 296 / 3

          = 98.66 g

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The expected ground-state electron configuration for the element with one unpaired 5p electron that forms a covalent compound with fluorine is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^2.

To determine the expected ground-state electron configuration, we need to consider the element with one unpaired 5p electron that forms a covalent compound with fluorine.

Since we are looking for an element with one unpaired 5p electron, we can refer to the periodic table.

The element in question is in the p-block of the periodic table, and its electron configuration can be written as:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^1

To determine the expected ground-state electron configuration, we need to understand that elements tend to achieve a stable configuration by filling their valence shell. In this case, the valence shell is the 5p orbital.

To form a covalent compound with fluorine, the element must gain one electron from fluorine.

This electron would occupy one of the unpaired 5p orbitals, resulting in the following electron configuration:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^2

Therefore, the expected ground-state electron configuration for the element with one unpaired 5p electron that forms a covalent compound with fluorine is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^2.

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The type of compound can be identified by looking at its formula. Ionic compounds typically consist of a metal cation and a non-metal anion, and their formula will look like this: M(+n) X(-m), where M is the metal cation, X is the non-metal anion, and n and m are the charges of the ions.

Covalent compounds contain only non-metals and their formula will look like this: XyZz, where X, Y, and Z are the elements present in the compound and the subscripts (y and z) represent the number of atoms of each element.

Acidic compounds typically have the formula HX, where X is the anion present in the compound.

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Answer:

A=4

B= 4+2 =6

C=Carbon

D=10

E=22

F=Argon

Answer:

A = 8

B = 8

C = O

D = 26

E = 30

F = Fe

Explanation: I got it wrong from both of the answers on the other answer. These were the correct ones.

Answer: a mixture

Explanation:

The new volume of the balloon after the leak, with 1 mole of carbon dioxide, is approximately 7.05 liters. The ideal gas law equation, PV = nRT, relates the pressure (P), volume (V), number of moles (n), gas constant (R), and temperature (T) of a gas.

In this case, we can assume constant temperature and pressure. Initially, the balloon had a volume of 23.5 liters and contained 3.0 moles of carbon dioxide. We can use the equation to find the initial number of moles:

\(\[ P_1 \cdot V_1 = n_1 \cdot R \cdot T \]\)

Similarly, after the leak, the balloon contains 1 mole of carbon dioxide. We can find the new volume using the equation:

\(\[ P_2 \cdot V_2 = n_2 \cdot R \cdot T \]\)

Since the pressure and temperature are constant, we can rewrite the equations as:

\(\[ \frac{{V_1}}{{n_1}} = \frac{{V_2}}{{n_2}} \]\)

Plugging in the values, we have:

\(\[ \frac{{23.5 \text{ L}}}{{3.0 \text{ mol}}} = \frac{{V_2}}{{1.0 \text{ mol}}} \]\)

Solving for \(\(V_2\)\), we find \(\(V_2 \approx 7.05 \text{ L}\)\), which is the new volume of the balloon after the leak.

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The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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