_____ is responsible for bringing gravity into modern science.

Isaac Newton

Galileo Galilei

Albert Einstein

Answer:

96.1 %

Explanation:

Which teacher do you have lol

The total outer atoms present in a molecule with planar shape are four and total lone pairs are 2.

Square planar shape is formed when there are four bonds and two lone pairs on the central atom.

The four atoms that are attached to the central atom are known as the four outer atoms. These atoms are arranged in such a way that it makes the square shape. The outer atoms are not always fours. They can be 2,3 or four.

The lone pairs are present on the central atom.

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1) List the known and unknown quantities.

Volume: 208,000 gallons.

Density: 1.00 g/mL.

2) Convert gallons to liters.

3.7854 L = 1 gal.

3) Convert g/mL to pound/L

1 pound = 453.59 g

1000 mL = 1 L

4) Mass of water in kg.

5) Convert pounds to tons.

1 ton = 2000 pounds

The conversion factors needed are those in option D.

.

Answer:

1- fission

2- fusion

3- radioactive decay

4- gamma

5- alpha particle

6(high speed electron)- beta rays

7-plasma

The chemical shift values observed in nuclear magnetic resonance (NMR) spectroscopy for hydrogens attached to different groups can provide important information about the molecular structure. Here are some general chemical shift ranges for hydrogens attached to different types of carbons:

sp³ hybridized carbons: Hydrogens attached to sp³ carbons typically exhibit chemical shifts in the range of 0-3 ppm.

sp² hybridized carbons: Hydrogens attached to sp² carbons usually show chemical shifts between 4.5-6.5 ppm.

sp hybridized carbons: Hydrogens attached to sp carbons generally have chemical shifts around 2-3 ppm.

Aldehyde: The hydrogens in the aldehyde group (-CHO) typically exhibit chemical shifts in the range of 9-10 ppm.

Carboxylic acid: Hydrogens of the carboxylic acid group (-COOH) usually show chemical shifts between 10-12 ppm.

Aromatic: Hydrogens attached to aromatic carbons generally have chemical shifts in the range of 6.5-8.5 ppm.

It should be noted that these chemical shift ranges are general and can vary depending on the specific molecule and its environment. The hybridization of the carbon atom to which the hydrogen is attached is denoted by the superscript, with sp³, sp², and sp representing hybridization with three, two, and one p orbitals, respectively.

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Among the given reactions, the oxidation-reduction (redox) reactions can be identified as follows:

2Na(s) + Cl2(g) → 2NaCl(s)

Na(s) + CuCl(aq) → NaCl(aq) + Cu(s)

The reaction 2Na(s) + Cl2(g) → 2NaCl(s) is an oxidation-reduction (redox) reaction. In this reaction, sodium (Na) is oxidized from an oxidation state of 0 to +1, and chlorine (Cl) is reduced from an oxidation state of 0 to -1. Sodium loses electrons (undergoes oxidation) and chlorine gains electrons (undergoes reduction) to form sodium chloride (NaCl).

The reaction Na(s) + CuCl(aq) → NaCl(aq) + Cu(s) is also an oxidation-reduction (redox) reaction. In this reaction, sodium (Na) is oxidized from an oxidation state of 0 to +1, and copper (Cu) is reduced from an oxidation state of +2 to 0. Sodium loses electrons (undergoes oxidation) and copper gains electrons (undergoes reduction) to form sodium chloride (NaCl) and solid copper (Cu).

On the other hand, the reaction NaCN(aq) + CuCl(aq) → NaCl(aq) + CuCN(s) does not involve a change in oxidation states, so it is not classified as an oxidation-reduction (redox) reaction.

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Answer:

The three isomers of trans-1, 2-dichlorocyclobutane are as follows: The stereoisomers are those compound which differs in configuration. The stereoisomer of trans-1, 2-dichlorocyclobutane is cis-1, 2-dichlorocyclobutane.

Based on the Pauli exclusive principle, the maximum number of electrons that can be accommodated by any orbital is two electrons.

The Pauli exclusive principle states that no two electrons in the same atom can have the same value for all four quantum numbers.

The four quantum numbers that are used to describe electrons are as follows;

The maximum number of electrons that can be accommodated by any orbital is two electrons of opposite spin

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The electron configuration for Uranium (U) is based upon the placement of uranium in the fourth column of the actinide series or f block. Therefore the electron configuration for uranium must end as 5f4,

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4e14 5d10 6p6 7s2 5f4

This notation can be written in core notation or noble gas notation by replacing the : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4e14 5d10 6p6 with the noble gas [Rn].

[Rn] 7s2 5f4

I hope this was helpful.

Answer:

The answer is bacteria (microorganisms)

Explanation:

Bacteria can't be seen with the naked eye but it's part of a species that make up the biodiversity.

Answer

Molarity of the solution = 2.81 mol/L

Explanation

Given:

Mass of lithium carbonate = 38 grams

Volume of solution = 183 mL

What to find:

Molarity of the solution.

Step-by-step solution:

The molarity of the solution can be calculated using the molarity formula, which is;

First, you need to convert 38 grams of lithium carbonate to mole using the mole formula.

Molar mass of lithium carbonate = 73.891 g/mol

Also, Volume in L = (183/1000) = 0.183 L

Putting the values of mole and volume in L into the molarity formula above, we have;

Hence, the molarity of the solution is 2.81 mol/L.

There would be an increase in the concentration of carbonic acid - this is how an increase in carbon dioxide concentration influences the system.

In chemistry, a dynamic equilibrium lives once a reversible reaction occurs. Substances transition between the reactants and products at equal rates, indicating there is no net change. Reactants and products exist formed at such a rate that the concentration of neither changes. It is a precise example of a system in a steady state. After a time, a reversible reaction in a closed system can get what we call a dynamic equilibrium.

The correct answer is option D.

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To convert the pressure of a particular gas, expressed in bar units, to units of atmosphere, it is necessary to divide the given pressure by the value of one atmosphere in bar units. Thus, to convert 3.38 bar to atmospheres, it is necessary to divide 3.38 by 1.01325 bar/1 atm.

Pressure can be expressed in various units. One of the most commonly used units of pressure is the atmosphere, abbreviated atm. Other commonly used units of pressure include the torr, millimeters of mercury (mm Hg), kilopascals (kPa), and pounds per square inch (psi). To convert pressure from one unit to another, it is necessary to use conversion factors that relate the two units.

Here are some of the most commonly used conversion factors:1 atm = 760 mm Hg1 atm = 101.3 kPa1 atm = 1.01325 barTo convert a pressure expressed in one unit to another unit, it is necessary to use the appropriate conversion factor in a way that cancels out the initial unit and leaves the desired unit. For example, to convert 3.38 bar to atmospheres, it is necessary to use the conversion factor that relates bar to atmospheres:1 atm = 1.01325 barThis means that one atmosphere is equivalent to 1.01325 bar.

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Answer:

By using a filter.

Explanation:

At a pH of 5 and a pKa of 3.85, the percentage of lactate is approximately 98.2%.

The Henderson-Hasselbalch equation is an equation that is used to calculate the pH of a solution containing a weak acid and its conjugate base. The equation is expressed as pH = pKa + log ([A-]/[HA]), where pKa is the acid dissociation constant, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.

To calculate this percentage, you need to use the Henderson-Hasselbalch equation:

pH = pKa + log [lactate]/[lactic acid]

Rearranging the equation to solve for [lactate]/[lactic acid] yields:

[lactate]/[lactic acid] = 10^(pH - pKa)

Plugging in the pH and pKa values gives:

[lactate]/[lactic acid] = 10^(5 - 3.85) = 98.2%

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Answer:

34.92 grams NaCl (in 1 L of solution)

Explanation:

The chemical formula of sodium chloride is NaCl. From the formula, we can calculate the molar mass of NaCl:

MM(NaCl)= MM(Na) + MM(Cl) = 23 g/mol + 35.4 g/mol = 58.4 g/mol

A solution of NaCl with a molarity of 0.598 M has 0.598 moles of NaCl per liter of solution. So, we multiply the moles by the molar mass of NaCl to calculate the mass we need:

mass of NaCl = 0.598 mol x 58.4 g/mol = 34.92 g NaCl

Therefore, we need 34.92 grams of NaCl to prepare 1 liter of a solution with a molarity of 0.598 M.

Answer:

dry cell

Explanation:

because it stops when salt distribution becomes equal as bridge is not added

Answer:

a

Explanation:

a p e x :)

The two correct answers for risks involved in both underground mining and surface mining are Ground instability and Respiratory disease.

Ground instability: Both underground mining and surface mining can be susceptible to ground instability, which can lead to cave-ins, landslides, or collapses.

Respiratory disease: Both types of mining can expose workers to dust and harmful particles, which can cause respiratory diseases such as pneumoconiosis (e.g., coal workers' pneumoconiosis) or silicosis.

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If the reaction is of the first order, the temperature at which its half-life period be 10 minutes is 2893 K.

For first-order reactions, the half-life is related to the rate constant k as follows:

t1/2 = 0.693 / k

So, the rate constant k can be calculated as

k = 0.693 / t1/2

Substitute the values of t1/2 = 10 minutes in the above equation, we get;

k = 0.693 / 10 minutes = 0.0693 / min

Now, we can calculate the rate constant, k using Arrhenius equation:

k = A exp(-Ea/RT)

where, R is the gas constant = 8.31 J/molK and T is the temperature in Kelvin (K).

First, convert the activation energy into joules/mol by multiplying it with 1000: Ea = 98.6 kJ/mol × 1000 J/kJ = 98600 J/mol.

Substitute the values of k, A, and Ea in the Arrhenius equation, we get:

0.0693 / min = 4 × 10¹³ sec⁻¹exp(-98600 J/mol / (8.31 J/molK T))

Simplify the above equation by taking the natural log of both sides and rearrange to isolate the temperature, we get:

ln(0.0693) - ln(60) = ln(4 × 10¹³) - 98600 / (8.31 × T)

ln(0.0693) - ln(60) - ln(4 × 10¹³) = - 98600 / (8.31 × T)

ln(0.0693 × 60 × 4 × 10¹³) = - 98600 / (8.31 × T)

T = - 98600 / (8.31 × ln(0.0693 × 60 × 4 × 10¹³))

T = 2893 K

Therefore, the temperature at which the half-life period is 10 minutes is 2893 K.

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Answer: 8 electrons

Explanation:

Answer: 8 valence electrons

Explanation: This is because the maximum electron an energy level can hold is 8 making it a stable atom

Answer:

This is balanced

Explanation:

Both sides contain 2 Ag 2 NO3 1 Ba and 2 Cl.

Answer:

Compaction and Cementation

Dissolved minerals in the ground water precipitate (crystallize) from water in the pore spaces forming mineral crusts on the sedimentary grains, gradually cementing the sediments, thus forming a rock

The compound that is most likely to contain a covalent bond among the given options is Cl4​ (tetrachlorine).

Covalent bonds occur between nonmetal atoms, where they share electrons to achieve a stable electron configuration. In Cl4​, the chlorine atoms (Cl) are all nonmetals, and they are likely to form covalent bonds by sharing electrons with each other.

On the other hand, the remaining compounds, CaCl2​ (calcium chloride), LiBr (lithium bromide), KI (potassium iodide), and NaCl (sodium chloride), involve a metal (Ca, Li, K, Na) bonded with a nonmetal (Cl, Br, I). In these cases, the metal atom tends to donate electrons to the nonmetal atom, resulting in an ionic bond rather than a covalent bond.

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Answer:

c.  the mother could get an infection

Explanation: