Local winds can be caused by______heating of the earth's surface.

equal
ground
uneven
super

Answer:

C is your answer.

Explanation:

A decomposition reaction occurs when a single product breaks down into two or more simpler products.

AB → A + B

Option C is the correct answer.

In option (A) zinc displace hydrogen, therefore, the reaction is a displacement reaction.

Decomposition reaction:-When one reactant breaks down into two or more products, this is referred to as a decomposition reaction. This is denoted by the equation:

\(AB \rightarrow A+B\)

In option (c), NaCl breaks down into two products. So, the reaction is a decomposition reaction.

Hence, the reaction given in option (c) is an example of a decomposition reaction.

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Answer:

C) one magnesium and one oxygen

Answer:

It is D low precision, high accuracy

Explanation:

I got it correct

The Xs show the location of beanbags a student tossed at a target. The student was aiming for the center circle. Low precision, high accuracy​  best describe the student's results. Therefore, option D is correct.

There are two ways to assess observational error: accuracy and precision. Precision measures how closely two measurements are to one another, whereas accuracy measures how close a group of measurements is to its actual value. In other words, precision is a measure of statistical variability and a description of random errors.

The proximity of two or more measurements to one another is referred to as precision. Using the aforementioned example, your measurement is extremely accurate if you weigh a certain substance five times and obtain 3.2 kg each time. Accuracy is not necessary for precision.

Regardless of whether or whether two or more measurements are correct, precision is described as "the property of being exact" and relates to how close two or more measurements are to one another.

Thus, option D is correct.

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The Correct electron configuration of carbon as 1s² 2s² 2p². Option B.

To understand why this is the correct electron configuration, let's break it down step by step:

The atomic number of carbon is 6, which means it has six electrons. Electrons are distributed in energy levels or shells around the nucleus.

The first shell, known as the 1s orbital, can hold a maximum of 2 electrons. Therefore, the first part of the electron configuration is 1s², indicating that two electrons occupy the 1s orbital.

The second shell has two subshells: the 2s orbital and the 2p orbital. The 2s orbital can hold a maximum of 2 electrons, while the 2p orbital can hold a maximum of 6 electrons. In the case of carbon, after the 1s orbital, two more electrons occupy the 2s orbital. So far, we have 1s² 2s².

The remaining two electrons in carbon are placed in the 2p orbital. The 2p orbital consists of three separate p orbitals: 2px, 2py, and 2pz. Each p orbital can hold a maximum of 2 electrons. Therefore, the last part of the electron configuration for carbon is 2p², indicating that two electrons occupy the 2px and 2py orbitals. Option B is correct.

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Answer:

From personal experience

Explanation:

If is not felt by the writer, the reader will not feel it either!

Answer:

the writers emotions about the writing will affect the way the reader feels

Explanation:

Answer:

We need more? What else is in the question? This is unanswerable.

Explanation:

Answer:

Particle Symbol Mass

electron e- 0.0005486 amu

proton p+ 1.007276 amu

neutron no 1.008665

Explanation:

CaCO3 = CaO + CO2

1mol. 1 mol

100. 56

1 ×100. 1 × 56

100. 56

100g of CaCO3 produces 56g of CaO

25.2g of CaCO3 produces x

x = 25.2 ×56

100

x =14.112g of CaO

This does not disprove the law of thermodynamics because energy was lost to the environment as heat

The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed, only transferred or converted from one form to another.

In other words, the total amount of energy in a closed system remains constant over time. This law is a fundamental principle of physics and applies to all forms of energy, including mechanical, electrical, chemical, and thermal energy.

ΔU = Q - W

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The pH of a 0.250 M solution of HOC6H5 is 2.92 and HCN is 5.96

a. HOC6H5, or benzoic acid, is a weak acid that partially dissociates in water to form H+ and C6H5COO- ions. The dissociation reaction is

HOC6H5 ⇌ H+ + C6H5COO-

To determine the pH of a 0.250 M solution of benzoic acid, we need to calculate the concentration of H+ ions in solution. The equilibrium expression for the dissociation reaction is:

Ka = [H+][C6H5COO-]/[HOC6H5]

where Ka is the acid dissociation constant for benzoic acid. The value of Ka for benzoic acid is 6.5 × \(10^-5.\)

We can assume that the initial concentration of H+ ions in the solution is zero. At equilibrium, let x be the concentration of H+ ions in solution and 0.250 - x be the concentration of C6H5COO- ions in solution. Then:

Ka = x(0.250 - x)/0.250

Solving for x, we get:

x = 1.21 × \(10^-3\) M

the pH of a 0.250 M solution of benzoic acid is:

pH = -log[H+] = -log\((1.21 × 10^-3)\) = 2.92

b. HCN, or hydrocyanic acid, is also a weak acid that partially dissociates in water to form H+ and CN- ions. The dissociation reaction is:

HCN ⇌ H+ + CN-

To determine the pH of a 0.250 M solution of HCN, we need to calculate the concentration of H+ ions in solution. The equilibrium expression for the dissociation reaction is:

Ka = [H+][CN-]/[HCN]

where Ka is the acid dissociation constant for HCN. The value of Ka for HCN is 4.9 ×\(10^-10\).

We can assume that the initial concentration of H+ ions in the solution is zero. At equilibrium, let x be the concentration of H+ ions in solution and 0.250 - x be the concentration of CN- ions in solution. Then:

Ka = x(0.250 - x)/0.25

Solving for x, we get:

x = 1.1 × \(10^-6\) M

pH :- -log[H+] = -log\((1.1 × 10^-6)\)

= 5.96

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The volume of nitrogen gas produced is 1.11 L according to the chemical equation for the interaction between potassium and nitric acid: 2K + 6HNO3 3H2O + 2KNO3 + NH4NO3.

The equilibrium vapour pressure of the material is this partial pressure of vapour in equilibrium above a liquid. Water has a vapour pressure of 0.0313 atm, or 23.8 mm of mercury, at ambient temperature (25 °C; 760 mm Hg = 1 atm).

The volume of nitrogen gas generated can be calculated using the ideal gas law: PV = nRT

To determine how many moles of hydrogen gas were generated:

PV = nRT

n = PV/RT

n = (1.01 atm - 0.0293 atm) * 1.03 L / (0.0821 L·atm/mol·K * 297 K)

n = 0.0392 mol

The balanced chemical equation states that 1 mole of nitrogen gas is created when 2 moles of potassium react. As a result, the amount of nitrogen gas generated is:

n(N2) = 0.5 * n(K)

n(N2) = 0.5 * 3.64 g / 39.10 g/mol

n(N2) = 0.0441 mol

The volume of nitrogen gas created can now be calculated using the ideal gas law once more:

PV = nRT

V = nRT/P

V = 0.0441 mol * 0.0821 L·atm/mol·K * 297 K / (1.01 atm - 0.0293 atm)

V = 1.11 L

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Answer:

10

Explanation:

The molarity of the ammonium nitrate solution is 2281 M.

Molarity is defined as the number of moles of solute per liter of solution. It is also known as molar concentration of the solution and is used to calculate amount of substances in the solution.

Molarity = n/M

n = m / MW

m = 2 lbs = 1000/2.2 = 909 g

V = 53 x 3.79/1 = 200.9

MW = 80.04 g

M = m/Mw / V

M = 909/80.04 /200.9

M = 2281 M

Thus, the molarity of the ammonium nitrate solution is 2281 M.

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When we convert Bilbo's shire property (i.e 108540 m²) to acres, the result obtained is 26.82 acres

From the question given above, the following data were obtained:

We can convert 108540 m² to acres by doing the following

Conversion scale

4047 m² = 1 acre

Therefore

108540 m² = 108540 / 4047

108540 m² = 26.82 acres

Thus, 108540 m² is equivalent to 26.82 acres

Therefore, we can conclude that Bilbo's shire property in acres is 26.82 acres

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Answer:

D

Explanation:

took the test and got it right

Answer:

D. exchange of energy with the surroundings

Explanation:

Got it right on edge.

Answer:

Trigonal planar

Explanation:

If a hypothetical molecule XY3 has three electron domains as shown and no lone pairs, the molecule will be trigonal planar in shape.

From the valence shell electron pair repulsion theory, the shape of molecules is dependent on the number of electron domains in a molecule and weather those electron pairs are lone pairs or bond pairs.

Since lone pairs cause more repulsion and take up more space around the central atom than bond pairs, bond pairs cause the bond angle and molecular geometry to deviate from that predicted on the basis of the valence shell electron pair repulsion theory.

Finally, remember that in a molecule, electron pairs are placed as far apart in space as possible to minimize repulsion.

The element from which it is easier to remove an electron between Argon and Bromine is Bromine.

This can be explained by electron affinity.

Electron affinity is defined as amount of the energy released when one mole of electron is added to one mole of atom or to the outermost or valence shell to form anion. It is the measure of attraction existing between atom and electron.

Electron affinity of Bromine is 324.537 kJ/mol and electron affinity of Argon is -96 kJ/mol. A higher electron affinity indicates that an atom accepts or removes the electrons more easily and low electron affinity means that an atom do not accept or remove electrons as easily.

Bromine has atomic number 35, which means it has 35 protons in nucleus. It has 35 electrons and for a bromine atom to become a 1- bromide ion, it will have to gain an electron. If it loses electrons, it receives a positive charge because it has more protons than electrons.

Argon is a noble gas element. It means argon is highly stable because it has full outer shell of electrons. Argon has low affinity. Therefre, it does not lose or gain electrons because it is already stable.

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The volume of \(N_2O_5\) needed to produce 9.64 L of \(NO_2\) is 4.97 L, calculated using stoichiometry and the ideal gas equation.

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Answer:

-Gas converting to a liquid

-Solid converting to a liquid

Explanation:

Endothermic process. It's absorb heat

Answer:

\(\boxed {\boxed {\sf 7 \ protons}}\)

Explanation:

On the Periodic Table, Nitrogen is:

In elements, their atomic number is also equal to the number of protons. As the number of protons in an atom change, so does the identity of the atom.

Since nitrogen has an atomic number of 7, it must always have 7 protons

Answer:

32 grams

Explanation:

To find the mass of the object, you need to multiply the given volume by the denisty. The denisty ratio compares the mass of an object per every 1 mL. It is important to arrange the denisty ratio in a way that allows for the cancellation of units (mL should be in the denominator). The final answer should have 2 sig figs.

Denisty = 1.35 g/mL

  24 mL                1.35 g
----------------  x  -----------------  =  32.4 g = 32 g (correct sig figs)
                              1 mL

Water can be understood as both yin and yang. The number of ways Yin and Yang can be explained is in numerous ways.

Yin and Yang explain how to exist in harmony and in balance with nature. Yin and Yang are not distinct entities, but rather two extremes of a spectrum. Everything Yin includes a trace of Yang. Also, everything Yang contains a trace of Yin. They are always in connection with one another.

The yin is the physical aspect of nature and the yang is the forces surrounding these physical aspects.

Some of the ways in which Yin and Yang can be explained are as follows:

Disruption in either Yin or Yang can cause an imbalance in nature.

Therefore, we can conclude that the number of ways in which we can explain the Yin and the Yang is numerous.

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Answer:

Farenheit

Explanation:

STP is used to measure standard temperature and pressure -- it uses Kelvin for temperature, not Farenheit.

Answer:

C2H8N

Explanation:

it wont change since there is no common factor between the 2:8:1 which will give us a whole number so it stays the same

Answer:

air (N2 mixed with O2 and CO2)

Explanation:

It's a mixture of different gases.

Explanation:

please write correct answer

Answer:

Explanation:

2AgNO₃ + Sn ⇄ Sn( NO₃)₂ + 2Ag

Ag⁺/Ag = .80 V

Sn⁺²/Sn = - .14 V

Hence Ag will be reduced and Sn will be oxidised . Hence the reaction will take place . YES .

2 ) 2 electrons are transferred .

3 )

2Ag⁺  + 2e = 2Ag

Sn = Sn⁺²  + 2e

---------------------------

2Ag⁺ + Sn = Sn⁺²  + 2Ag .