What do animals mean to you?

A)Lovable fur friends
B)Speacial to you
C)They are just animals
D)Who cares

The element that is in a higher column will have a stronger coulombic attraction because this property is dependent on the size of the charge.

This is known as any substance which can't be broken down into smaller parts through a chemical means and examples include helium, magnesium etc.

On the periodic table, we have two broad divisions in which the rows are called period while the column is referred to as group. As we move up the column, the coulombic attraction increases.

This is so because a high number of protons will lead to a corresponding increase in the positive charge. This then improves the strength of the nucleus and it is able to pull the electrons further away from it thereby making it the most appropriate reason.

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Answer:

Solvent; solute; hydrophilic.

Explanation:

Solubility is a term used to describe how readily a substance can be dissolved in a solvent to form a solution. Thus, a substance is said to be soluble if it dissolves completely in a solvent and insoluble if it doesn't dissolve or only dissolves partially.

In Chemistry, dissolution can be defined as the process of dissolving or dissociating a solute in solid, liquid or gaseous phase into fragmented particles by a solvent in order to form a solution. For dissolution to occur in solids, the crystalline structure of the substance must be broken up so as to release ions, atoms or molecules to produce a solution. For liquid and gases, the substance to be dissolved must form a non-covalent bond with the solvent to produce a solution.

Hence, during the process of dissolution the solute maybe completely ionized, partially ionized, or it may remain intact.

For example, coffee or tea (liquid or solvent) with sugar (solid or solute) dissolved in it is a water-based solution.

In this scenario, coffee is the solvent, sugar is the solute, and this means that the sugar molecules must be hydrophilic because it has a degree of affinity for water i.e it is able to absorb some amount of water.

A solute can be defined as a substance that is typically dissolved in a liquid solvent such as water, coffee, tea, etc., to produce a solution.

On the other hand, a solvent is any liquid such as water, coffee, tea, etc., that dissolves a liquid, gaseous, or solid solute to produce a solution.

The correct name for the compound Al(NO2)3 is aluminum dinitrate.

Chemical nomenclature is the formal system of naming chemical compounds. It is based on certain rules and conventions, and allows scientists to quickly and accurately identify and communicate the structure and composition of a compound.

The rules of chemical nomenclature vary depending on the type of compound, but generally involve assigning the correct prefix, suffix, and stem to the compound. The prefix indicates the type of element present in the compound, the stem indicates the number and arrangement of the atoms, and the suffix indicates the type of bonding and the type of compound. For example, the name for H2O is "dihydrogen monoxide" because the prefix "di" indicates two atoms of hydrogen, the stem "hydrogen" indicates that the compound contains hydrogen atoms, and the suffix "oxide" indicates that it is an oxide compound.

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Considering the definition of molar mass, the mass of one mole of C₃H₈ is 44 grams.

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

The molar mass of a compound (also called Mass or Molecular Weight) is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

C= 12 g/mole

H= 1 g/mole

So, the molar mass of the compound C₃H₈ is calculated as:

C₃H₈ = 3 ×12 g/mole + 8 ×1 g/mole

Solving:

C₃H₈ = 44 g/mole

Finally, the mass of one mole of C₃H₈ is 44 grams.

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The correct option is (C). The approximate final volume of a solution prepared by diluting 25 mL of 8.25 M sodium hydroxide to a concentration of 2.40 M is 86 mL (option C).

To find the final volume of the solution, we can use the formula:

C1V1 = C2V2

Where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Plugging in the values we know, we get:

(8.25 M) (25 mL) = (2.40 M) (V2)

Solving for V2, we get:

V2 = (8.25 M x 25 mL) / 2.40 M
V2 = 86.25 mL

Therefore, the approximate final volume of the solution prepared by diluting 25 mL of 8.25 M sodium hydroxide to a concentration of 2.40 M is 86 mL (option C).

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Answer:

...............

Answer:

D The atom gains an electron in an oxidation-reduction reaction.

Answer:

Please find the explained difference below

Explanation:

In a scientific experiment, the CONTROLLED VARIABLE, also known as CONSTANT, is the the variable that is kept unchanged by the experimenter throughout the course of the experiment. The constants are not part of the actual experiment but altering them can influence its outcome.

A control group is one of the two groups in an experiment (the other being experimental group) that doesn't receive the variable being manipulated (independent variable). The control group is the same as the experimental group except that the independent variable is unchanged in the control group. It is used to make a comparison with the experimental group.

For example, in an experiment to test the effect of sunlight on plant growth. Some plants were exposed to sunlight while some were placed in the dark. The CONTROL group of this experiment are the plants placed in the dark (no light). They didn't receive any treatment.

The constants of this experiment can be same amount of water, same type of plants used etc. This is done in order not to affect the outcome of the experiment.

Answer:

It would take sound 104.998 seconds to travel across lake tahoe.

Explanation:

First let's convert the miles to meters, so, 21.6 miles = 34754.4 meters

Now, we will divide this number in meters by 331. So, 34754.4 / 331 = 104.998

And what will the unit be? Seconds will be the unit for time here so 104.998 seconds.

Answer:

C. how many particles are in the substance

Answer:

it is how hot or cold so bassically c in my test

Explanation:

Answer:

6430 milligrams

Explanation:

Answer:

6430 mg

Explanation:

Step 1: Find conversion

1 gram = 1000 milligrams

Step 2: Use Dimensional Analysis

6.43 g(1000 mg/1 g) = 6430 mg

On a train ride cross-country, the trees, buildings, and people appear to be speeding by the window. This is because the train is moving in the forward direction.

Scientists use the shared system for making measurements. This system is also called system of international.

Physical science studies the relationships between natural but non-living objects. Physical science is ordinarily thought of as consisting of four broad areas: astronomy, physics, chemistry, and the Earth sciences.

If 6.6 tyrannosaurs weigh 30,000 kg, then one tyrannosaur weigh about 4545 kg. For most activities, the earth makes a handy frame of reference.

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Yes, sulfur and sodium will form an ionic compound. The empirical formula of the compound formed is Na2S.

When two elements form an ionic compound, one element is usually a metal and the other is a non-metal. Ionic compounds are formed when electrons are transferred between the two elements. In the given pairs, sulfur and iodine, sodium and chlorine and lithium and bromine all contain one metal and one non-metal and therefore are likely to form ionic compounds. The empirical formulas of these compounds are

I2S, NaCl and LiBr, respectively.

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Answer:

Explanation:

is insufficient to overcome intermolecular forces.

Answer:

hope this helps

Explanation:

When the process of condensation occurs, the kinetic energy of particles is insufficient to overcome intermolecular forces.

becomes independent of temperature,

becomes exactly equal to the intermolecular forces easily overcomes the intermolecular forces

Excess lithium hydroxide is added to solution and this will lead to crystallization of lithium sulfate which is separated from the solution using filtration techniques.

The reaction that occurred between the sulfuric acid and lithium hydroxide is known as a neutralisation reaction.

The products of this reaction is a salt called lithium sulfate and water.

Upon the addition of excess base (lithium hydroxide) the solution becomes super saturated leading to crystallization of salt from the solution.

The mixture is then filtered using a filtration funnel through gravity filtration process.

The hydrated lithium sulfate is then collected as the residue and dried.

Therefore, excess lithium hydroxide is added to solution and this will lead to crystallization of lithium sulfate which is separated from the solution using filtration techniques.

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(a) The natural sources of alkanoates includes fats and oils.

Alkanoates are organic compounds which are formed from the reaction which occurs between an alkanoic acid and alkanol.

So therefore, we can now confirm that one of the sources of esters are fatty oils.

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Answer:Thermal Energy is not a form of potential energy

Explanation:

\(\red{➤}\:\)\(\sf ({\frac{3}{2}})^{-1}÷ ({\frac{-2}{5}})^{-1}\)

\(\\\)

Since the power is in negetive,we write the reciprocal of the number and then solve it like positive exponents-

\(\begin{gathered}\\\quad\longrightarrow\quad\sf( {\dfrac{3}{2}})^{-1}÷ ({\frac{-2}{5}})^{-1}\\\end{gathered} \)

\(\begin{gathered}\\\quad\longrightarrow\quad\sf ({\dfrac{2}{3}})^{1}÷ ({\dfrac{5}{-2}})^{1}\quad (a^1=a)\\\end{gathered} \)

\(\begin{gathered}\\\quad\longrightarrow\quad\sf \dfrac{2}{3}÷ \dfrac{5}{(-2)}\\\end{gathered} \)

\(\begin{gathered}\\\quad\longrightarrow\quad\sf \dfrac{2}{3}×\dfrac{(-2)}{5}\\\end{gathered} \)

\(\begin{gathered}\\\quad\longrightarrow\quad\sf \dfrac{2×(-2)}{3×5}\\\end{gathered} \)

\(\begin{gathered}\\\quad\longrightarrow\quad\boxed{\sf{ \dfrac{-4}{15}}}\\\end{gathered} \)

Laws of Exponents-

\( \sf a^m×a^n = a^{m+n} \\

\sf a^m/a^n = a^{m-n} \\

\sf{(a^m)}^n = a^{mn} \\

\sf a^n/b^n = (a/b)^n \\

\sf a^0 = 1 \\

\sf a^{-m }= 1/a^m

\)

Rotenone is an inhibitor of Complex 1 in the electron transport chain. The addition of rotenone will cause a decreased oxidation of NADH (Nicotinamide adenine dinucleotide). Thus, the correct option is option D (decreased oxidation of NADH).

The electron transport chain is an electron carrier mechanism located in the inner mitochondrial membrane, which helps generate ATP (Adenosine triphosphate). The electrons carried by the NADH and FADH2 (Flavin adenine dinucleotide) get transferred to the electron transport chain via Complex 1 and Complex 2.

This transfer of electrons generates a proton gradient, which helps in ATP production. Complex 1 is also known as NADH-ubiquinone oxidoreductase. It is a crucial enzyme in the electron transport chain as it accepts electrons from NADH and donates them to coenzyme Q10 (Ubiquinone).

Rotenone is a natural insecticide that works by inhibiting Complex 1. As a result, NADH cannot be oxidized to NAD+, which, in turn, leads to decreased ATP production.

Furthermore, Complex 1 inhibition leads to decreased oxygen consumption. It is essential to remember that rotenone does not affect Complex 2, which is involved in FADH2 oxidation. Therefore, the oxidation of FADH2 remains the same, and no change occurs in its oxidation due to the addition of rotenone.

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When animals breathe out, they also emit water vapor into the atmosphere. This is referred to as respiration.

Some of the water that falls to the ground is stored by the earth. Water is excreted by animals through respiration and urine. In animals, the process is known as perspiration or sweating. Evaporation and transpiration convert liquid water into vapor, which rises into the atmosphere as air currents rise. Water vapor, also known as water vapor or aqueous vapor, is the gaseous state of water. It is a type of water in the hydrosphere.

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Answer:

The atomic radius (r) of an atom can be defined as one half the distance (d) between two nuclei in a diatomic molecule. Atomic radii have been measured for elements. The units for atomic radii are picometers, equal to 10−12 meters

Answer:

A. They are malleable, ductile, and conduct electricity.

Explanation:

Answer:

a

Explanation:

The **resistance** of the resistor needed to warm the Iceberg Kid's hands is **13.75 Ω**.

To calculate the resistance, we first need to find the power (P) generated by the resistor using the formula P = E/t, where E is the thermal energy (151 J) and t is the time of operation (6.87 s). Next, we use the power formula P = V²/R, where V is the voltage (12.0 V) and R is the resistance. By rearranging the formula, we get R = V²/P. After finding the power and plugging in the values, we can determine the resistance needed to warm the Iceberg Kid's hands.

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answer; the last two is me and u :

Answer:

In the compound Pb3(PO4)2, there are 3 Pb atoms, 2 P atoms, and 8 O atoms.

Let me know if this helps!

There are 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen) are present in Pb3(PO4)2.

A compound is a combination of atoms of same or different types of an element in a fixed ratio.

In the given question Pb3(PO4)2 is a compound of lead phosphate which is made up of 3 atoms of pb(Lead), 2 atoms of P(Phosphorus) and 8 atoms of O(Oxygen).

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The required volume flow rate of liquid ethyl alcohol to supply at a rate of 2000 kJ/s is approximately 164.9 L/min.

To determine the required volume flow rate of liquid ethyl alcohol, we need to calculate the fuel flow rate first. Then, we can convert it to volume flow rate.

Given:

Rate of energy release (Q) = 2000 kJ/s

Excess air = 40% (or 0.4)

First, let's calculate the fuel flow rate (m f):

Q = m f × Lower Heating Value (LHV)

The Lower Heating Value (LHV) for ethyl alcohol can be calculated using the enthalpy of vaporization:

LHV = enthalpy of vaporization / molecular weight of fuel

LHV = 42,340 kJ/k mol / 46.07 kg/k mol = 920.11 kJ/kg

Now, we can calculate the fuel flow rate:

m f = Q / LHV

m f = 2000 kJ/s / 920.11 kJ/kg ≈ 2.173 kg/s

Next, let's convert the fuel flow rate to volume flow rate:

Volume flow rate (V f) = m f / density

V f = 2.173 kg/s / 790 kg/m³ = 0.002749 m³/s

Finally, we can convert the volume flow rate to L/min:

V f = 0.002749 m³/s × (1000 L/1 m³) × (60 s/1 min) ≈ 164.9 L/min

Therefore, the required volume flow rate of liquid ethyl alcohol to supply at a rate of 2000 kJ/s is approximately 164.9 L/min.

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Answer:

d = m/v

Explanation:

Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume.

Answer:

Density= mass/volume

Explanation:

from def: Density is mass per unit volume.

Gas collecting bottle is 150 ml by volume then the mass of hydrogen gas that was collected is 3.48 gram

Mass is a measure of the amount of matter in a substance or an object

Here given data is

Volume = 150 ml

Density of H₂ gas = 0.000523

So we have to calculate mass = ?

Mass = density/volume

Mass = 0.000523/150 ml

Mass = 3.48 gram

Mass of hydrogen gas that was collected is 3.48 gram

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