Please someone can help me to fill out??

The dog went to its water bowl for a drink. The correct option is A

A signal or stimulus that comes from within an organism's body and affects its behavior or physiological functions is referred to as an internal cue. The majority of the time internal cues are connected to an organism's internal condition such as its physiological requirements, feelings, or biological cycles.

A stimulation that an animal receives internally, such as thirst, hunger, or exhaustion, is known as an internal cue. In this instance, the dog is attempting to quench its hunger by heading to its water bowl.

Therefore, the correct option is A

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Answer:

DNA

Explanation:

Answer:

Substance B, boiling point of 105 °C

Explanation:

Non volatile substances have high boiling points

Answer:

12.9 L Kr

General Formulas and Concepts:

Chemistry - Gas Laws

Explanation:

Step 1: Define

0.575 mol Kr

Step 2: Identify Conversions

1 mol= 22.4 L at STP

Step 3: Convert

\(0.575 \ mol \ Kr(\frac{22.4 \ L \ Kr}{1 \ mol \ Kr} )\) = 12.88 L Kr

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

12.88 L Kr ≈ 12.9 L Kr

The statement "Superficial zone chondrocytes can get compacted under physiological loading: a multiscale finite element analysis" is true.

Superficial zone chondrocytes are the most exposed to mechanical loading and are therefore at risk of being compacted under physiological loading. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

This means that chondrocytes in the superficial zone of cartilage are at risk of being compacted under the physiological loading that it experiences in everyday life. A multiscale finite element analysis can be used to model and predict the mechanical behavior of cartilage under physiological loading, allowing for a better understanding of the factors that affect its mechanical properties.

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Cicadas are known for their broadly spaced, pronounced eyes, and short antennae.

While annual cicadas are widespread, periodicals are only found in North America. In the middle and eastern parts of the country, there are mostly periodic broods, and in some places, there are multiple broods.

Adult cicadas are black in color with green or orange-brown markings, and they have wingspans of 1 to 2 inches. They have clear wings with orange veins and big, black or red eyes. Nymphs resemble their adult counterparts in appearance, although they lack wings and are not as vividly colored.

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There will be 0.4589 mL of ethyl acetate left in the space after evaporation.

The conversion of a liquid substance into a gas is known as evaporation. As a result of the liquid absorbing energy from its surroundings, molecules begin to travel faster and faster until they finally become a vapour and escape into the environment. Usually, the energy is absorbed as heat, but it can also be in the form of light or electricity.

No, the ethyl acetate won't all evaporate. The amount of ethyl acetate that will stay in the space after evaporation can be determined using the ideal gas law. As per the ideal gas law, PV = nRT

P is the overall system pressure, V is the room's volume, n is the amount of ethyl acetate in moles, R is the ideal gas constant, and T is the temperature.

To solve for n, the quantity of moles of ethyl acetate, we can rearrange the equation as follows: n = PV/RT

When the values are plugged in, we get:

n = (94.9 torr)(7.25 m x 2.75 m x 2.75 m)/(8.314 J/K mol)(298 K)

\(n = 4.666 \times 10^{-3} mol\)

The molar mass of ethyl acetate (88.11 g/mol) can then be used to compute the mass of ethyl acetate:

Mass = \(n \times M = (4.666 x 10^{-3} mol)(88.11 g/mol)\) = 0.4125 g

Using the density of ethyl acetate (0.901 g/mL), it is possible to determine the volume of the liquid that is still present:

Volume = mass/density = (0.4125 g)/(0.901 g/mL) = 0.4589 mL

As a result, there will be 0.4589 mL of ethyl acetate left in the space after evaporation.

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The stronger the acid the easier the H+ ions dissociate in solution of the following statements is true.

The correct option is A.

Because it almost entirely dissociates, HCl is a powerful acid. A weak acid, such as acetic acid (CH₃COOH), on the other hand, does not dissociate easily in water because numerous H+ ions are still locked up inside the molecule. In conclusion, more free H+ ions are liberated into solution with stronger acids.

Strong acids (and bases) are completely dissociated into ions, which is the cause of this. In comparison to weak acids (and bases) of comparable concentrations, they therefore supply more ions for conductivity. An illustration is the complete ionization of a 0.1 M hydrochloric acid solution.

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The complete question is -

Which of the following statements is true?

A-The stronger the acid the easier the H+ ions dissociate in solution.

B-The weaker the acid the easier the H+ ions dissociate in solution.

C-The stronger the base the easier the H+ ions dissociate in solution.

D-The weaker the base the easier the H+ ions dissociate in solution.

Answer:

1.661 mol.

Explanation:

Hello!

In this case, since the Avogadro's number allows us to relate the number of formula units in one mole of the substance; we need to keep in mind that elements are related by atoms and compounds by molecules, it means:

\(1 mol = 6.022x10^{23}atoms\\\\1 mol = 6.022x10^{23}molecules\)

Thus, for copper (I) oxide, we compute the moles, given the atoms as shown below:

\(n = 1.900x10^{24}molecules*\frac{1mol}{ 6.022x10^{23}molecules} \\\\n = 1.661mol\)

Thus, the method we use is the same.

Best regards

Answer:

  58.0 g/mol

Explanation:

At STP, one mole occupies 22.4 liters. One mole of the hydrocarbon would have a mass of ...

  (2.59 g/L)(22.4 L/mol) ≈ 58.0 g/mol

Answer:

As - 8 dots and 3- charge, Se - 8 dots and 2- charge, Br - 8 dots and 1-, K - zero dots and +1 charge, Ca - zero dots and +2 charge, Ga - zero dots and +3 charge.

The valence electrons of each element are represented by dots that surround their chemical symbol in a Lewis dot symbol. The Lewis dot symbol's dots correspond to the valence electrons, which correspond to the final digit of the element's group number as in periodic table.

Two chlorine atoms, for instance, share one pair of electrons when they combine to form a chlorine molecule. According to the Lewis structure, each Cl atom contains one shared pair of electrons and pairs of electrons that aren't employed in bonds (known as lone pairs) (written between the atoms).

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The flow rate of the IV solution in drops per minute is 80 drops/min.

To determine the flow rate in drops per minute, we need to consider the conversion factors and relationships between different units.

First, let's convert the lidocaine dose from grams to milligrams, as the flow rate is given in milligrams per minute:

1 gram = 1000 milligrams

So, 1.0 gram of lidocaine is equal to 1000 milligrams.

Next, we can calculate the total volume of the IV solution in milliliters:

250 mL

To find the flow rate in milligrams per minute, we divide the dose by the total time:

Flow rate = Dose / Time

The dose is 1000 milligrams (1.0 gram) and the time is 1 minute.

Flow rate = 1000 mg / 1 min = 1000 mg/min

Now, to determine the flow rate in drops per minute, we need to convert the IV solution volume from milliliters to drops. Given that 20 drops = 1.0 mL, we can set up a conversion factor:

20 drops / 1 mL

To find the flow rate in drops per minute, we multiply the flow rate in milligrams per minute by the conversion factor:

Flow rate (drops/min) = Flow rate (mg/min) * Conversion factor

Flow rate (drops/min) = 1000 mg/min * (20 drops / 1 mL)

Now we need to convert milliliters to drops:

Flow rate (drops/min) = 1000 mg/min * (20 drops / 250 mL)

Simplifying the expression:

Flow rate (drops/min) = 1000 mg/min * (4/50)

Flow rate (drops/min) = 80 drops/min

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Answer:

A 20.0 L

20.0

L

nickel container was charged with 0.500 atm

0.500

a

t

m

of xenon gas and 1.50 atm

1.50

a

t

m

of fluorine gas at 400 ∘C

400

∘

C

. The xenon and fluorine react to form xenon tetrafluoride. What mass of xenon tetrafluoride can be produced assuming 100%

100

%

yield?

Explanation:

Explanation:

It found a small but statistically significant association between reduced health care spending and increased death rates among children less than a year old, specifically that a10% reduction in health care spending led to an increase in infant mortality of 0.5% for boys and 0.4% for girls.

Answer:

I believe its 1,2, and 5

Explanation:

C D E

temperature of medium

type of wave

type of medium

Answer:

0.99 μmol/L

Explanation:

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

Volume of stock solution (V₁) = 20 mL

Concentration of stock solution (C₁) = 18.8 μmol/L

Volume of diluted solution (V₂) = 380 mL

Concentration of diluted solution (C₂) =?

The concentration of the diluted solution can be obtained as follow:

C₁V₁ = C₂V₂

18.8 × 20 = C₂ × 380

376 = C₂ × 380

Divide both side by 380

C₂ = 376 / 380

C₂ = 0.99 μmol/L

Therefore, the concentration of the diluted solution the chemist is working on is 0.99 μmol/L

The oxidation state of nitrogen (N) in NaNO3 is +5. option B

To determine the oxidation state of nitrogen (N) in sodium nitrate (NaNO3), we need to assign oxidation numbers to each element in the compound.

In NaNO3, we know that the sodium ion (Na+) has a +1 oxidation state because it is an alkali metal. Oxygen (O) typically has an oxidation state of -2 in compounds, and there are three oxygen atoms in NaNO3. Since the compound is neutral, the sum of the oxidation states must be zero.

Let's assume that the oxidation state of nitrogen is x. Therefore, we can set up the equation:

(+1) + x + (-2) * 3 = 0

Simplifying the equation:

+1 + x - 6 = 0

x - 5 = 0

x = +5

Therefore, the oxidation state of nitrogen (N) in NaNO3 is +5.

The oxidation state of an element indicates the number of electrons it has gained or lost in a compound. In this case, the nitrogen atom in NaNO3 has gained five electrons to achieve a stable oxidation state of +5.

It is important to note that oxidation states are formal charges and do not necessarily represent the actual distribution of electrons in a compound. They are assigned based on a set of rules and can be useful in understanding the reactivity and behavior of elements in chemical reactions.

Option B

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Fission is the formation of two smaller atoms by the collision of the neutrons. The quantity of energy produced per gram is 7.23 × 10¹⁰ J/g.

Nuclear fission is a process in which the neutron collides with the atom and results in the formation of two isotopes.

The nuclear fission reaction is shown as,

\(\rm ^{235}_{92}U + ^{1}_{0} n \rightarrow ^{144}_{54} Xe + ^{90}_{38}Sr + 2^{1}_{0}n\)

Energy in joules is calculated by the Einstein's formula as:

\(\begin{aligned} \rm E &= \rm mc^{2}\\\\&= 3.139 \times 10^{-28} \times (2.99 \times 10^{8})^{2}\\\\&= 2.82 \times 10^{-11}\;\rm J\end{aligned}\)

Energy per gram is calculated as:

\(\begin{aligned}& =\dfrac{ (2.82 \times 10^{-11})(6.022 \times 10^{26})}{235.043}\\\\&= 0.0722 \times 10^{12}\\\\&= 7.23 \times 10^{10} \;\rm J/g\end{aligned}\)

Therefore, the energy per gram of the fission is \(7.23 \times 10^{10} \;\rm J/g.\)

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The final temperature of the water is: T_final = 45.0°C

We can use the formula for the specific heat capacity of the water to solve this problem:

q = mcΔT

First, we can calculate the initial energy of the water:

q = mcΔT

q = (10.0 g) (4.184 J/g°C) (25.0°C)

q = 1,046 J

Next, we can calculate the final temperature after absorbing 840 J:

q = mcΔT

840 J = (10.0 g) (4.184 J/g°C) (ΔT)

ΔT = 20.0°C

Therefore, the final temperature of the water is:

T_final = T_initial + ΔT

T_final = 25.0°C + 20.0°C

T_final = 45.0°C

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Answer:

Halogens

Explanation:

Atomic number 9 is the element fluorine. Fluorine is in group 17 of the periodic table. Elements in group 17 of the periodic table are called halogens.

Answer:

its the seeds since its what is being tested

The dependent variable of this experiment is the height of the seedling.

A variable can be described as an alphabet that is employed in an experiment to represent an unknown number. Variable represents the value. A variable can be demonstrated as a quantity that may be changed according to the mathematical problem.

The dependent variable in an experiment can be demonstrated as a variable that depends on the value of some other number. The dependent variable in an experiment can be demonstrated as the output of a function. If the value of the dependent variable during the experiment changes then there will be a change in the value of the independent variable.

The independent variable does not depend on the other variables as well as is called the input of a function. The value of the independent variable is generally not affected by any values of a variable.

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The final temperature of the granite and the water in the calorimeter is 8.4°.

We know that in accordance to the first law of thermodynamics, energy is neither created nor destroyed but it can be converted from one form to another. This implies that the heat that is lost by the granite has to be equal to the heat that is gained by the water in this case.

Knowing that;

H = mcdT

H = heat lost or gained

c = specific heat capacity of the substance

dT = temperature change

Heat lost by the granite = Heat gained by water

52.6 * 0.79 * (θ - 125) = 100 * 4.18 * (θ - 20)

41.6θ - 5200 = 418θ - 8360

Collecting the like terms

41.6θ  - 418θ =  - 8360 + 5200

-376.4θ =  -3160

θ = -3160/-376.4

θ = 8.4°

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As per chemical changes, a color change can be seen when a substance change into a new substance.

Chemical changes are defined as changes which occur when a substance combines with another substance to form a complete  new substance.Alternatively, when a substance breaks down or decomposes to give new substance it is also considered to be a chemical change.

There are several characteristics of chemical changes like those of  change in color, change in state , change in odor and even change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.

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The final temperature at equilibrium will be approximately 26.525 °C.

To find the final temperature at equilibrium, we can use the equation:

Q = m * c * ΔT

Where:

Q = heat energy absorbed or released

m = mass of the substance

c = specific heat capacity of the substance

ΔT = change in temperature

In this case, 800 J of heat is absorbed by 120 g of water at 25 °C. We need to find the final temperature at equilibrium.

Using the equation for water:

Q_water = m_water * c_water * ΔT_water

Rearranging the equation, we can solve for the change in temperature (ΔT_water):

ΔT_water = Q_water / (m_water * c_water)

Substituting the given values:

ΔT_water = 800 J / (120 g * 4.18 J/g°C)

Calculating:

ΔT_water ≈ 1.525 °C

To find the final temperature at equilibrium, we add the change in temperature to the initial temperature:

Final temperature = 25 °C + 1.525 °C

Final temperature ≈ 26.525 °C

Therefore, the final temperature at equilibrium will be approximately 26.525 °C.

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an ionic compound is made of two or more elements held by a strong electrostatic force. metal atoms lose electrons to become positive ions, and non metals gain electrons to become negative ions. ionic bonding occurs between metals and non metals

The balanced equation will be \(2NH_3 + 3I_2 -- > N_2I_6 + 3H_2\)

They are chemical equations that obey the law of conservation of atoms.

In other words, they are equations in which the number of atoms before and after reactions are the same.

Thus, the balanced equation for the reaction will be \(2NH_3 + 3I_2 -- > N_2I_6 + 3H_2\)

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Answer:

\(0.5594\ \text{L}\)

Explanation:

Mol of NaI = 0.405 mol

Molarity of solution = 0.724 M

Molarity is given by

\(M=\dfrac{\text{mol}}{\text{Volume of solution in }NaI}\\\Rightarrow \text{Volume of solution in }NaI=\dfrac{0.405}{0.724}\\\Rightarrow \text{Volume of solution in }NaI=0.5594\ \text{L}\)

The required volume is \(0.5594\ \text{L}\).

Answer:

b

Explanation:

because it is moving so it has kinetic energy