Warm-blooded animals have a narrow range of body temperature because their bodies have a high water content. Explain.

Additive is the  type of combination of two chemicals produces an effect that is equal to their individual effects taken together. Thus, option (A) is correct.

As the baseline effect in approaches assessing whether medications have a synergistic impact, the additive effect can be utilized to identify synergy. A synergistic effect is comparable to an additive effect in that it has a bigger combined effect than the additive effect.

When two medications are combined, it can generate a 2+2 > 4 effect. Although the synergistic impact is more prevalent, the additive effect may be detected in the majority of combination medicines. If the combined impact of two pharmaceuticals in combination treatment is less than the total of the effects of the two drugs working separately, this is referred to as an antagonistic effect, and the drugs are rarely prescribed together in the same therapy.

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\(\text{HNO}_3 (aq) \longrightarrow \text{H}^{+} + \text{NO}_3^{-} (aq)\\\\\text{Here ,} ~~ [ \text{H}^{+} ] = 0.056~ M\\\\\\\text{pH} = -\log[\text{H}^+}] = -\log(0.056) = 1.252\)

Considering the definition of molar mass, the number of moles of Zn reactant used is 2 moles.

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 balanced reaction is:

Zn(s) + 2 HCl(aq) → ZnCl₂ + H₂(g)

Assume that 130.8 grams of Zn was used in this reaction.

To determine the number of moles of hydrogen gas formed, you need to know the number of moles of Zn reactant was used.

So to determine the number of moles used you know that the molar mass of Zn is 65.37\(\frac{g}{moles}\). Then:

\(molar mass=\frac{mass}{number of moles}\)

\(65.37\frac{g}{moles} =\frac{130.8 g}{number of moles}\)

Solving:

number of moles× 65.37\(\frac{g}{moles}\)= 130.8 g

\(number of moles=\frac{130.8 g}{65.37\frac{g}{moles}}\)

number of moles≅ 2 moles

Finally, the number of moles of Zn reactant used is 2 moles.

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The universal value of STP is 1 atm (pressure) and 0 o C. Note that this form specifically stated 0 o C degree, not 273 Kelvin, even thought you will have to convert into Kelvin when plugging this value into the Ideal Gas equation or any of the simple gas equations. In STP, 1 mole of gas will take up 22.4 L of the volume of the container.

The frequency of the light emitted by strontium carbonate is 4.60 x 10 ^ 14 Hz and the energy is 3.05 x 10 ^ - 19 J.

To calculate the frequency and energy of light emitted by strontium carbonate, which has a wavelength of 652 nm. To do this, we'll use the following equations:
1. c = λ * f
2. E = h * f
where c is the speed of light (3.0 x 10^8 m/s), λ is the wavelength, f is the frequency, E is the energy, and h is the Planck's constant (6.63 x 10^-34 Js).

Step 1: Convert the wavelength to meters:
652 nm = 652 x 10^-9 m

Step 2: Calculate the frequency (f) using the first equation:
c = λ * f
3.0 x 10^8 m/s = (652 x 10^-9 m) * f
f = (3.0 x 10^8 m/s) / (652 x 10^-9 m)
f ≈ 4.6 x 10^14 Hz
Step 3: Calculate the energy (E) using the second equation:
E = h * f
E = (6.63 x 10^-34 Js) * (4.6 x 10^14 Hz)
E ≈ 3.05 x 10^-19 J

So, the frequency of the light emitted by strontium carbonate is approximately 4.6 x 10^14 Hz, and its energy is approximately 3.05 x 10^-19 J.

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An atom with one electron in its valence shell will tend to lose that electron to achieve the noble gas configuration and becomes a cation.

Cations are positively charged ions and are formed when an atom loses its electrons. They lose one or more electrons from their valence shell but do not lose any protons. Therefore, they get a net positive charge. Some examples of cations are  Potassium (K⁺), Calcium (Ca²⁺), and hydrogen (H⁺).

Anions and cations are both ions and have opposite electrical charges. They feel attraction for each other. A cation repels another cation whereas an anion repels another anion.

An atom that has one electron in its valence shell will always tend to lose that electron to get completely filled electronic configuration. So the atom will convert into a cation to attain the more stable noble gas configuration.

For example, sodium has an electronic configuration 1s²2s²2p⁶3s¹. It has one electron in its valence shell, so it converts into Na⁺ by losing one electron and attains a configuration similar to Neon noble gas.

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Asbestos is composed of fibers known to cause lung disease. However, it is important to note that both radon and lead exposure can also have negative effects on lung health.

(a) asbestos(b) radon(c) lead(d) carbon monoxide(e) formaldehydecomposed of fibers known to cause lung disease,the followings are:

(a) asbestos: Asbestos is a naturally occurring mineral that consists of flexible and durable fibers.

(b) radon: Radon is a radioactive gas that can be released from certain types of rocks and soils.

(c) lead: Lead is a heavy metal that can be found in various sources, such as paint, soil, and water.

(d) carbon monoxide: Carbon monoxide is a toxic gas that is produced by the incomplete combustion of carbon-based fuels.

(e) formaldehyde: Formaldehyde is a colorless gas with a pungent odor. It is commonly used in various products, including building materials, household cleaners, and some personal care items.

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The movement of particles from an area of high concentration to an area of lower concentration is known as Diffusion. There are two types of Diffusion; simple diffusion and facilitated diffusion.

Simple diffusion and facilitated diffusion have some similarities and differences.

Both simple diffusion and facilitated diffusion are passive processes and do not require energy. They both deliver transport molecules in the direction of a concentration gradient.

There are also some differences. The speed of simple diffusion is low as compared to facilitated diffusion. Simple diffusion does not require the assistance of carrier molecules but facilitated diffusion does.

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Answer:

C. the energy used to hold the nucleus together

Explanation:

carbon dioxide waste from the body, is a result of

cellular metabolism. Through exhalation, a body gets rid of CO2. (the lungs), are most important in removal of co2.

10) cellular transport through the lungs.

11) o2 (inhalation) lungs, oxygenate cells to deliver o2 through the bloodstream to perform proper function. plus the pulmonary arteries renew and release CO2 from the body..

(a) To get the pH of the media to 5.8, you would add NaOH solution. NaOH is used as a basic solution, and when it is added to a solution, it will increase the pH of the solution.

(b) The molecular weight of BA is 225.3. To prepare a 1M solution, you would have to weigh out 225.3 grams of BA.(c) To convert a 1M solution of BA to mg/mL, you can use the following equation: 1 mole = molecular weight in grams; 1000 millimoles = 1 mole. So, 1 M = 1000 mg/mL. Therefore, a 1M solution of BA is equivalent to 1000 mg/mL .(d) To convert a concentration of 1000 mg/mL .

Therefore, to calculate the weight required for a 5 mM solution, use the following formula :Mass of BA = molarity × volume × molecular weight= 5 × 0.001 × 225.3= 1.1265 grams(f) To convert a concentration of 5 mM to mg/mL, we use the following formula: Concentration (mg/mL) = (Concentration (mM) × Molecular weight) / 1000= (5 × 225.3) / 1000= 1.1265 mg/mL(g)

To convert a concentration of 1.1265 mg/mL to mg/L, we multiply by 1000, so 1.1265 mg/mL = 1126.5 mg/L.(h) Given that the stock solution of BA is 5 mM and the working solution is 0.2 mg/mL.

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Answer:

\(\tt{ \green{P} \orange{s} \red{y} \blue{x} \pink{c} \purple{h} \green{i} e}\)

Answer:

The correct answer would be - 13.0975 ounces.

Explanation:

We know that brass is made up of zinc and copper. The copper part of the brass is approximately around 50 to 70% and the remaining is the zinc part.

Given:

Zinc percentage in a brass = 35%

copper percentage would be - 65% (100 - 35 = 65)

Weight of the brass metal bar = 20.15 ounce

ounces of copper are in the bar = ?

Solution:

The weight of the copper in the brass metal in ounces-

= weight of brass* percentage of copper/100

= 20.15*65/100

= 13.0975 ounces of copper.

2nd method =

The weight of the zinc in the brass metal in ounces-

= weight of brass* percentage of zinc/100

= 20.15*35/100

= 7.0525

The weight of the copper = total weight - weight of zinc

= 13.0975 ounces of copper.

Answer:

iron and carbon:steel:copper and tin: metal

There are several types of greenhouse gases, but the two most commonly discussed are carbon dioxide (CO2) and methane (CH4). Of these two, methane is more difficult to control.

Methane is a more potent greenhouse gas than carbon dioxide, meaning it has a stronger warming effect on the planet. However, methane also has a shorter lifespan in the atmosphere than carbon dioxide, which means that reducing methane emissions can have a more immediate impact on reducing warming. The challenge with controlling methane emissions is that they come from a variety of sources, including agriculture (such as from livestock and manure management), energy production (such as from oil and gas drilling), and waste management (such as from landfills). Each of these sources requires different approaches to reduce emissions.

Nitrous oxide is more difficult to control because it is emitted from various natural and human-related sources such as agriculture, livestock management, and industrial processes. Controlling these sources can be complex and challenging. On the other hand, carbon dioxide emissions are primarily associated with the burning of fossil fuels, making it relatively easier to control through energy efficiency, renewable energy adoption, and carbon capture and storage technologies.

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Isotope -

What is the term for atoms that have the same number of neutrons and protons but a different energy configuration?

Atoms that have the same number of protons but different numbers of neutrons are known as isotopes. Isotopes have different atomic masses.

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The mechanical advantage of the car key is 8. Here's why:Mechanical advantage refers to the ratio of output force to input force.

It is a measure of the efficiency of a simple machine in overcoming resistance. As a result, to calculate mechanical advantage, we must first determine output force and input force.In this instance, the force required to pry open a soda can lid is 50 N. The force supplied by the car key is 400 N.

The mechanical advantage is then determined by dividing the output force by the input force. Output force: force required to pry open a soda can lid = 50 NInput force: force supplied by the car key = 400 NMA = output force/input force = 50 N/400 NMA = 1/8MA = 0.125 or 1:8 The mechanical advantage of the car key is 8.

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Answer: 2/3

Explanation:

Answer:

False

Explanation:

The periodic table is in order of their atomic number. If that were true, helium would not come before boron, for example.

Step 1

The reaction involved here:

3 FeO + 2 Al => 3 Fe + AI2O3 (Don't forget to completed it and balance it)

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

Step 2

Data provided:

125 grams of FeO react with 25.0 grams of AI

--

Data needed:

The molar masses of:

FeO) 71.8 g/mol

Al) 27.0 g/mol

Fe) 55.8 g/mol

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

Step 3

The limiting reactant:

By stoichiometry,

3 FeO + 2 Al => 3 Fe + AI2O3

3 x 71.8 g FeO ----- 2 x 27.0 g Al

125 g FeO ----- X

X = 125 g FeO x 2 x 27.0 g Al/3 x 71.8 g FeO

X = 31.3 g Al

For 125 g of FeO, 31.3 g of Al is needed, but there is 25.0 g of Al, so the limiting reactant is Al.

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

Step 4

The amount of Fe produced:

By stoichiometry,

3 FeO + 2 Al => 3 Fe + AI2O3

2 x 27.0 g Al ---- 3 x 55.8 g Fe

25.0 g Al --- X = 77.5 g Fe

Answer: 77.6 g Fe (the closest value)

The empirical formula Fe₂O₂H₄ represents the compound with iron and hydroxide. From this formula, we can see that the iron ion (Fe²⁺) has a charge of +2.

To determine the charge on the iron ion in the ionic compound with hydroxide, we need to find the empirical formula of the compound.

Let's assume the empirical formula of the compound is FeOH. In this case, the molar mass of FeOH would be:

Molar mass of FeOH = Molar mass of Fe + Molar mass of O + Molar mass of H

= (atomic mass of Fe) + (atomic mass of O) + (atomic mass of H)

The atomic mass of iron (Fe) is approximately 55.85 g/mol, and the atomic mass of oxygen (O) is approximately 16.00 g/mol. The atomic mass of hydrogen (H) is approximately 1.01 g/mol.

Molar mass of FeOH = (55.85 g/mol) + (16.00 g/mol) + (1.01 g/mol)

≈ 72.86 g/mol

Now, let's calculate the mass of iron in FeOH, assuming that it accounts for 52% of the compound by mass.

Mass of iron = 52% of the molar mass of FeOH

= 0.52 * 72.86 g

≈ 37.91 g

Since the mass of iron is approximately 37.91 g and it constitutes 52% of the compound by mass, the mass of oxygen and hydrogen combined must be the remaining 48% of the compound.

Mass of oxygen + hydrogen = 48% of the molar mass of FeOH

= 0.48 * 72.86 g

≈ 34.96 g

Now, let's calculate the ratio of iron to oxygen/hydrogen in terms of moles.

Moles of iron = mass of iron / molar mass of iron

= 37.91 g / 55.85 g/mol

≈ 0.679 mol

Moles of oxygen + hydrogen = mass of oxygen + hydrogen / (molar mass of oxygen + molar mass of hydrogen)

= 34.96 g / (16.00 g/mol + 1.01 g/mol)

≈ 2.11 mol

Dividing the moles of each element by the smallest number of moles (0.679 mol), we get the empirical formula:

Empirical formula: FeOH₂

Since we cannot have fractional subscripts in the empirical formula, we need to multiply all the subscripts by a factor to get whole numbers. In this case, we can multiply all the subscripts by 2:

Empirical formula (simplified): Fe₂O₂H₄

The empirical formula Fe₂O₂H₄ represents the compound with iron and hydroxide. From this formula, we can see that the iron ion (Fe²⁺) has a charge of +2.

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The model as shown in useful in the explanation of reflection.

The term model refers to that which represents reality. A model could be used for the purpose of explanation or for the purpose of prediction. It is used to show how there are connections in real life.

Now let us examine the model as shown. We can see that this is a model of reflection. The image of the ball can be seen on the mirror because light that falls on the ball is reflected towards the mirror.

This model is very useful in the description of the the phenomenon of reflection in the real life.

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Answer:

The answer is species diversity

Explanation:

Hope this helps:)......if not then sorry for wasting your time and may God bless you:)

Answer:combustion

Explanation:

The dominant intermolecular forces between the acetone molecules (CH3COCH3) is dipole-dipole forces is. D

Acetone is a dipolar molecule because of the positive and negative charges formed by the carbonyl group present in the compound. Therefore the dominant intermolecular forces between the acetone molecules are dipole-dipole interactions.

Therefore the dominant intermolecular forces between the acetone molecules is dipole-dipole interactions.

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Answer: Im not, sure if this is right, but I personally think that the Answer, to your question is TRUE!

Explanation: But Dont just take my word for it as I am not sure, Myself. I only made a guess.

Answer:

they break down sugars to provide energy for the cell

Explanation:

I'm not sure about my answer but I would have gone with that cause mitochondria are sites for respiratory reactions that yield energy to the cell

Answer:

the asymmetrical arrangement of hydrogen atoms in a molecule of water causes the molecule to be polar, with the hydrogen atoms having a slightly positive charge, and the oxygen atom having a slightly negative charge.