Identify the noble gas that is used by researchers to cool down samples for analysis.
O helium
O radon
O iodine
O oxygen
O neon

Answer:

The recessive allele tends to be masked when it's in the presence of the dominant allele.

Explanation:

Many of our traits are affected by our genes. From each of our parents, we receive one copy of every gene. These copies are called alleles.

There are different types of relationships that can occur between alleles. One of them is called dominance. This occurs when one allele masks the other, not allowing its effect to be expressed. The allele that masks the other is called the dominant allele (A), and the masked one is called the recessive allele (a). This means that an individual needs to have only one dominant allele in order for its effect to be expressed (AA or Aa). The effect of the recessive allele will be expressed only when an individual has both recessive alleles (aa).

Answer:

I don't know the answer sorry

The intermolecular forces that act between a nitrogen trichloride (NCl3) molecule and a dichloroethylene (CH2Cl2) molecule are dipole-dipole interactions and dispersion forces.

Intermolecular forces refer to the attractive and repulsive forces that occur between molecules in a substance. These forces arise due to the interactions between the charges on the atoms or molecules that make up the substance. Intermolecular forces are responsible for the physical properties of matter such as melting and boiling points, surface tension, and viscosity.

The types of intermolecular forces include London dispersion forces, dipole-dipole forces, and hydrogen bonding. London dispersion forces are present in all molecules and arise due to temporary fluctuations in the electron density of the molecule. Dipole-dipole forces occur in polar molecules where the positively charged end of one molecule interacts with the negatively charged end of another. Hydrogen bonding is a type of dipole-dipole force that occurs between a hydrogen atom bonded to an electronegative atom such as nitrogen, oxygen, or fluorine and a lone pair of electrons on another electronegative atom.

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Answer:

Its A

Explanation:

Answer:

2 Gc + 1 Mm + 3 Ch → 1 Gc2MmCh3

Note:

is this the s'more reaction?

-If not might there be a typo?

- if so, might it be one of these?

Answer:

They receive  a good amount of rain.

Explanation:

Answer: 2N2O3 -> 2N2 + 3O2

Explanation:

Answer:

2 2 3

Explanation:

2N2O3=2N2+3O2.. ....

Answer:

2D refers to the term “two-dimensional.”

3D refers to the term “three-dimensional.”

Explanation:

Circle, triangle, square, rectangle, and pentagon are some of the most common examples of 2D shapes.

Cylinder, pyramid, cube, and prism are some of the most common examples of 3D shapes.

Answer:

Explanation:

Forms of the same atom that differ only in their number of neutrons are called isotopes. Together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. ... A property closely related to an atom's mass number is its atomic mass.

The simplest whole-number ratio of the various atoms in a compound is represented by an empirical formula.

empirical method a chemical formula, rather than listing the total number of atoms in a molecule, shows the most basic ratio of the components in a compound.

The precise number of various atom types present in a compound's molecule is indicated by the molecular formula. The empirical formula for acetylene is CH. The empirical formula for acetylene is C2H2.

Sample mass equals 0.7789 CO2 mass generated = 1.179

Produced mass of to = 0.3179

C mass in the sample equals \(12 x 1.17 44, or 0.3199.\)

Its mass in the sample is equal to \(2 x 0.317 18 = 0.0359\)

The sample's mass of is given by \(0.778-(0.319+0.035) = 0.424 0.319\).

Divide by 12 H 0.035 0.424 mass their molar and \(0.319 0.035 \s0.424 16 \s0.027 \s0.035 \s0.027\)

by the smallest number

\(0.027 \s0.027 \s0.035 \s0.027 \s0.027 0.027 \s1.3\)

To express the number 3 4 3 in whole numbers, multiply by 3.

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Answer:

sea water

Explanation:

a sea water can match the following

Answer:

the symbol of an iron is Fe (ferous, feric).

The volume percentage of butanol in the given solution is 37%.

Butanolis a four-carbon alcohol with the formula C4H9OH that may be found in five isomeric configurations (four structural isomers), ranging from straight-chain primary alcohol to branched-chain tertiary alcohol.

The volume percentage of butanol in the given solution can be calculated using the formula:

Volume Percentage = (Volume of Butanol ÷ Total Volume of Solution) × 100

Substituting the given values in the formula, we get:

Volume Percentage = (37 L ÷ 100 L) × 100

Volume Percentage = 37%

Therefore, the volume percentage of butanol in the given solution is 37%.

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The volume of the sample \(V_{2} =53ml\)

To determine the new volume of the gas , we do this by assuming that the gas behaves ideally so  We do this by assuming that the gas behaves ideally so we can use the Combined gas laws.

Boyle's Law, Charles Law, and Gay-Lussac Law are combined to form the Combined gas laws. It claims that a constant exists between the ratio of a gas's absolute temperature to the product of its pressure and volume.

\(\frac{P_{1} V_{1} }{T_{1} }=\frac{P_{2} V_{2} }{T_{2} }\)

where P is the pressure, V is the volume, and T is the temperature in Kelvins. We are given the following values:

\(P_{1} =240\:KPa\:,V_{1} =70\:ml,\:T_{1} =300K,\:P_{2} =160\:KPa,\:T_{2} =150K\)

We proceed with the solution by solving it for \(V_{2}\) -

\(\frac{P_{1} V_{1} }{T_{1} }=\frac{P_{2} V_{2} }{T_{2} }\)

\(\frac{P_{1} V_{1} }{T_{1} }\times\frac{T_{2} }{P_{2} }=V_{2}\)

\(\frac{(200KPa).(70ml) }{300K }\times\frac{150K }{160KPa }=V_{2}\)

\(V_{2} =53ml\)

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The combination of isoclines that lead to competitive exclusion and competitive coexistence is the zero population growth isocline (ZPGI) and the resource axis (RA).Competitive exclusion and coexistence are both population dynamics terms.

Competitive exclusion is a situation whereby one species dominates a particular niche to the detriment of another species that requires the same resources. This occurs when the population of one species is larger than that of another in a given ecosystem .Competitive coexistence, on the other hand, is the opposite of competitive exclusion, where two or more species share the same niche or habitat and do not exclude one another. This is possible through resource partitioning, which occurs when species evolve different feeding behaviors or physical adaptations to consume different food types or occupy different areas in a shared ecosystem. Zero Population Growth Isocline (ZPGI) and the Resource Axis (RA) are the combination of isoclines that lead to competitive exclusion and competitive coexistence, respectively. They both play a significant role in population dynamics in ecology.

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Answer:

scientific community's consensus on the human causes of global climate change

Explanation:

Answer: two hydrogen atoms and one oxygen atom are removed during dehydration synthesis.

Hope this helps!

The IUPAC name of Acetic acid is Ethanoic acid.

Ethanoic acid is widely used in many industries.

Commercially it is used in the manufacturing of esters, vinegar, and many polymeric materials.

Vinegar has been shown to reduce high concentrations of blood sugar and thus, used as an agent to lyse red blood cells before white blood cells are examined.

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Answer: What is the mass of disulfur pentoxide (S2O5)?

Explanation:144.14g/mol

C. Angiosperms (flowering plants)

"There is not enough oxygen in space to support life," is the right response.

The short answer is that oxygen is brought from Earth by astronauts and cosmonauts (a Russian astronaut), and that oxygen is created by passing electricity through water. (this is called electrolysis). On the Space Station, both the air and the water were initially imported from Earth.

Typically, astronauts restrict their bodies in a small sleeping compartment or sleeping bag while they are sleeping. Since there is nearly no gravity in space, there is no such thing as up or down like there is on earth. Astronauts are able to sleep anyplace since any surface can serve as a floor, wall, or ceiling.

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Chemistry uses distillation, a physical separation method, to separate mixture components according to variances in their boiling points. In the procedure, a mixture is heated to cause the components to evaporate,

Separation in chemistry refers to the procedure of removing one or more components from a mixture in order to produce a concentrated or purified product. Several methods, such as distillation, chromatography, extraction, and filtering, can be used to separate substances. The method chosen will depend on the components that need to be separated as well as the nature of the combination. In many industrial and scientific processes, separation is a crucial stage because it enables the isolation of certain chemicals for additional investigation or usage. Also, it makes it possible to get rid of undesired substances or contaminants that can obstruct the intended outcome. Several and biological processes depend on efficient separation to succeed.

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The rate of reaction would be 0.0000142 mol/Ls.

The rate of reaction can be determined by using the following equation:

Rate = (Δ[C]) / (Δt)

where Δ[C] is the change in concentration of the reactant over a certain time interval, and Δt is the time interval.

I2 + HCl + CH3COCH3 → ICl + CH3COCH2Cl + H2O

Rate = (-Δ[I2]) / (Δt)

To calculate the change in iodine concentration, we need to know the initial and final concentrations. The initial concentration of iodine is 0.0051 mol/L (since 14 mL of 0.0051 M I2 was added to the reaction mixture). The final concentration is zero, since the iodine color disappears completely.

moles = concentration × volume (in liters)

moles acetone = 4.5 mol/L × 0.014 L = 0.063 mol

moles HCl = 1.3 mol/L × 0.012 L = 0.0156 mol

Since iodine is the limiting reactant, it will be completely consumed during the reaction. The moles of iodine are:

moles I2 = 0.0051 mol/L × 0.014 L = 7.14 × 10^-5 mol

Now, we can calculate the change in iodine concentration as follows:

Δ[I2] = 0.0051 mol/L - 0 mol/L = 0.0051 mol/L

The time interval is given as 359 seconds.

Plugging in the values we get:

Rate = (-Δ[I2]) / (Δt) = (-0.0051 mol/L) / (359 s) ≈ 1.42 × 10^-5 mol/L*s

Therefore, the rate of reaction is approximately 1.42 × 10^-5 mol/L*s.

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Answer:

because the first one sand is rough it is because sand is made from crushed shells and rocks and the parking lot is paved by dark asphalt means it is rough but hard and easy to step but the sand can hurt your feet beacuse sometimes crushed shells are pointed

Explanation:

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Answer

The sandy beach is a light color of sand and it reflects the light causing less heat absorption.  The dark asphalt does not reflect the light and heat, it absorbs and stores the heat.

Explanation:

Answer:

Explanation:

Sup Wayne I need this answer too.

Answer: 0.22 L of H2 has been produced

Explanation:

The molarity of a resulting solution is 0.707 mol/L

The molarity of a solution is defined by the amount of solute in moles divided by the volumes of solution in litres.

1 grams of ammonia is equals to 0.05872 mol

100 grams  of ammonia is equals to 5.872 mol

Molarity of a resulting solution would be = 100 gm of NH3 / 8.3 L of a solution.

That is 5.872 moles of NH3 / 8.3 of a solution.

Molarity of a resulting solution would be 0.707 mol/L of a solution.

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Answer:

4

Explanation:

Answer:

true

Explanation:

its kinda common sense

HFO-1234yf has been tested and found compatible with  PAG oil.
The correct answer is option A. PAG oil

PAG oil, or Polyalkylene Glycol, is a fully synthetic hygroscopic oil specifically designed for automotive air conditioner compressors. It is used in R-134a air conditioning systems to lubricate the compressor. When looking at PAG oil you will notice various numbers such as PAG46 or PAG100. These numbers refer to the viscosity of the oil, similar to 10W30 oil. In order to determine the correct PAG viscosity for your vehicle you will need to look up the specifications of your make and model of your vehicle either online or in the instruction manual.

Hence, HFO-1234yf is compatible with PAG oil. It is not compatible with mineral oil, hydraulic oil, or all of the items listed.

The correct answer is option A. PAG oil.
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Answer:

i thank its 4)

Explanation:

becuse if they have reactino or no reatino will it 4) becuse i did this