Which particle has two neutrons?
o 1 0 n
O 2 1 H
o 4 2 He
O 1 1 H

A playing card was placed on top of a glass during the clever at-home experiment, and then a quarter was placed on top of the card. The quarter landed in the glass when the card was pushed.

To determine the likelihood that the fetus will be born with specific chromosomal abnormalities, pregnant women can take the non-invasive prenatal screening test NIFTY (also known as cell-free DNA screening).

Because of its inertia, the coin is strongly motivated to remain stationary. The card cannot be moved quickly enough to defeat that force if it is moved slowly. The coin drops into the cup after staying in one position if you flick it swiftly.

To know more about nifty home experiments, visit;

https://brainly.com/question/35551719

#SPJ3

The sulfur in raw sulfur, which has an 88% S and 12% inerts composition, was burned in dry air supplied with 54% in excess. The cinder contained 6% S and the remaining inerts. It was discovered that 79% of the S that was gasified burned to SO2, and the remaining to SO3. The following are the calculations.

Percent excess air based on complete conversion of S to SO3S + 3O2 → SO3The equation shows that there is no excess air in the case of complete conversion of sulfur to SO3. The balanced equation indicates that 1 kmol of sulfur reacts with 3 kmol of oxygen to produce 1 kmol of SO3. This implies that 1.5 kmol of oxygen are necessary per kmol of S.

Given the air-supplying 54% in excess of S to SO2, the oxygen supply was 1.54(1.5 kmol O2/kmol S) = 2.31 kmol O2/kmol S.

The excess air required for the complete conversion of S to SO3 was thus (2.31 - 1.5)/1.5 × 100 = 54%.

The weight of cinder in kg

Cinder composition includes 6% sulfur. The amount of sulfur in the cinder is calculated as follows:

100 kg of cinder contains 6 kg of sulfur.

Mass of sulfur = Mass fraction × Total mass

= 6/100 × Total mass= 0.06

Total mass = Mass of sulfur/Mass fraction= 0.06/0.06= 1 kg

Amount of sulfur gasified in kmol

The weight of the sulfur present in the raw sulfur is calculated first: 100 kg of raw sulfur contains 88 kg of sulfur

Mass of sulfur = Mass fraction × Total mass= 88/100 × Total mass= 0.88

Total mass = Mass of sulfur/Mass fraction= 0.88/0.88= 1 kmol

SO2 percent in the burner gas based on complete analysis

The air needed to completely burn 1 kmol of sulfur to SO2 is 1 kmol S + 1.5 kmol O2 → 1 kmol SO2.

54% excess air was used in this situation, therefore, oxygen supply was 1.54(1.5 kmol O2/kmol S) = 2.31 kmol O2/kmol S. This implies that the air/fuel ratio was 2.31 kmol O2/kmol S. Since oxygen accounts for around 23 percent of the air, this equates to an air-fuel ratio of approximately 10 kmol air/kmol S. SO2 accounts for 20 percent of the dry products by volume. This equates to an SO2 concentration of 20/(20 + 80) = 20 percent by volume.

To know more about sulfur visit:

https://brainly.com/question/31780887

#SPJ11

Answer:

Metaphase

Explanation:

Metaphase is characterized by the chromosomes lining up at the equator; they are getting ready to separate. As it looks like from the picture, it looks like the chromosomes are in the middle. The chromosomes aren't quite pulled apart. I'm going from visual judgment.

Answer:

High pressure and low temperature, because particles are forced closer together and moving slower, so the volume of the particles is less significant

Answer:

A gas at very low volumes, when gas particles are very close together

A gas at very low temperatures, when gas particles have very little kinetic energy

A gas with highly polar molecules that have very strong inter-molecular forces

Explanation:

According to kinetic molecular theory:

a) Ideal gases have large number of particles which were considered to be hard spherical objects.

b) these gas particles move randomly in a straight line.

c) the path of gas particles change when they collide with each other or walls of vessel.

d) there is no or negligible inter molecular interactions between the gas particles.

e) the inter molecular distances is much higher than the size of particles.

f) the gas particles occupy negligible volume of the vessel.

g) during collision of gas particles is perfectly elastic.

h) the average kinetic energy of particles is constant at a constant temperature. It varies directly with the temperature.

Answer:

3.3 x 10⁻¹⁷ Hz    

Explanation:

To find the frequency, you can use the following equation:

E = h / f

In this equation,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> f = frequency (Hz)

You can plug the given values into the equation and simplify to find the frequency. This equation will require a little bit of rearranging.

E = h / f                                                        <----- Given equation

(2.0 x 10⁻¹⁷ J) = (6.626 x 10⁻³⁴ J*s) / f         <----- Insert values

(2.0 x 10⁻¹⁷ J) x f = (6.626 x 10⁻³⁴ J*s)        <----- Multiply both sides by f

f = 3.3 x 10⁻¹⁷ Hz                                        <----- Divide both sides by 2.0 x 10⁻¹⁷

The frequency of an x-ray wave with an energy of 2.0 x 10^-17 J is 3.3 x 10⁻¹⁷ Hz.

The term frequency is defined as the number of waves that pass a fixed point in unit time. Frequency is measured in hertz which is equal to one event per second.

Frequency also describes the number of cycles undergoes during one unit of time by a body in periodic motion.

Calculating the frequency, you can use the following equation:

E = h / f

Where,

E = energy (J)

h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

f = frequency (Hz)

Insert his values in the given equation

(2.0 x 10⁻¹⁷ J) = (6.626 x 10⁻³⁴ J × s) / f        

(2.0 x 10⁻¹⁷ J) x f = (6.626 x 10⁻³⁴ J × s)        

f = 3.3 x 10⁻¹⁷ Hz                

Thus, The frequency of an x-ray wave with an energy of 2.0 x 10^-17 J is 3.3 x 10⁻¹⁷ Hz.

To learn more about the frequency, follow the link;

https://brainly.com/question/5102661

#SPJ2

Amino acids in the diet that are not used to make proteins can be used in gluconeogenesis.

Gluconeogenesis is a metabolic pathway that occurs in the liver and kidneys, where certain amino acids can be converted into glucose. When the body has an excess of amino acids that are not needed for protein synthesis, they can be broken down and utilized to produce glucose molecules. Glucose is an essential energy source for the body and is needed for various metabolic processes. Gluconeogenesis helps maintain blood sugar levels and ensures a steady supply of glucose, especially during periods of fasting or when carbohydrate intake is insufficient.

In summary, amino acids in the diet that are not utilized for protein synthesis can be redirected and used in gluconeogenesis to generate glucose. This process provides an alternative pathway for amino acid metabolism and helps maintain energy balance and glucose homeostasis in the body.

To know more about Amino acids click here:

https://brainly.com/question/31872499

#SPJ11

The molarity of the chloride ion is 2.0 * 10⁻⁵ M.

The molarity of the chloride ion is calculated using the formula below:

The percentage concentration of chloride ion = 727/kg * 10⁻⁶ Kg * 100/1

The percentage concentration of chloride ion = 0.0727%

Molar mass of Chloride ion = 35.5 g/mol

Molarity = (0.0727 * 1.035)/(35.5 * 100)

Molarity of chloride ion = 2.0 * 10⁻⁵ M

In conclusion, the molarity of the chloride ion is obtained from the density and percent concentration of chloride ions in seawater.

Learn more about molarity at: https://brainly.com/question/24305514

#SPJ1

Answer:

true?

Explanation:

Answer:

A Punnet Square...the second I am not sure.

Explanation:

Unfortunately the second could be many things. You'd have to have more background information.

Answer:

PUNNETT....,MAKE SURE U HAVE 2 T,s

Explanation:

punnett and cross

Explanation:

So,0.3125 * 10 ^3 moles of Sulphur combines with 0.3125 * 10^3 moles of Oxygen to from SO2. Therfore mass ratio of SO2 : SO3 = 10 : 15 = 2:3.

Answer:

A. i think

Explanation:

hope this helps u!

The dust cloud created by the asteroid impact caused a global climate change that drastically altered the Earth's environment.  Hence, option A is correct.

The dust and debris in the atmosphere blocked out the Sun's rays, causing a cooling effect on the planet's surface. This reduction in sunlight meant that photosynthesis, the process by which plants make food, was greatly reduced.

As a result, plant life was severely affected, leading to the extinction of many herbivorous animals that relied on them for food.

The loss of herbivores then caused a chain reaction of extinctions among carnivorous animals that relied on them for food. Additionally, the impact and resulting earthquakes and tsunamis, along with the massive fires that likely occurred, also contributed to the mass extinction event.

Find more on asteroids:

https://brainly.com/question/19161842

#SPJ2

The value of the equilibrium constant, Kc, for this reaction is approximately 0.43 L/mol.

The balanced chemical equation for the reaction between ethanol and acid to form ester is:

CH₃CH₂OH + RCOOH ⇌ CH₃COOC₂H₅ + H₂O

where R represents the organic acid group.

From the given information, the initial concentration of ethanol and acid in the flask is 1.00 mol/L and 2.00 mol/L, respectively. At equilibrium, the concentration of ester is 0.86 mol/L.

The equilibrium constant expression for the reaction is:

Kc = [CH₃COOC₂H₅][H₂O]/[CH₃CH₂OH][RCOOH]

where the square brackets represent the molar concentrations of the respective species at equilibrium.

Substituting the given values, we get:

Kc = (0.86 mol/L) / (1.00 mol/L x 2.00 mol/L) = 0.43 L/mol

Therefore, the value of the equilibrium constant, Kc, is 0.43 L/mol.

To know more about equilibrium constant click on below link :

https://brainly.com/question/31321186#

#SPJ11

Sodium chloride is an ionic compound. The chemical name of Sodium chloride is NaCl.

Ionic compounds are made up of ions. They have charged particles. Ionic compounds when dissolved in solvents they form ions. Sodium chloride losses Na + and cl ions. Magnesium oxide will form mg2+ and O2 ions.

Ionic compounds dissolve in polar solvents. Examples are water, methanol and formamide. For ionic compounds to dissolve there will be ionic compounds will form.

Ionic bonds are not directional. There would be electrostatic or columbic attraction will be form in molecules.  The bonding seen in ionic compounds is called ionic bonding. There are two types of ions seen in molecules such as positive ions and negative ions.

Therefore, Sodium chloride is an ionic compound. The chemical name of Sodium chloride is NaCl.

To learn more about ionic bonding, refer to the link:

https://brainly.com/question/11527546

#SPJ4

Answer: B

Explanation: JUST TOOK THE QUIZ

Answer:

Compression

Explanation:

Hi! When two convergent plates collide, they should create compressive pressure, or compression.

The correct answer is A. Glycoside. Glycosides are a type of molecule that allows for the polymerization of two monosaccharides to occur.

During the polymerization process, a glycosidic bond is formed between the two monosaccharides. This bond is created through a dehydration reaction, in which a molecule of water is removed from the two monosaccharides. The resulting molecule is called a disaccharide, which is a type of oligosaccharide.

Anhydrides, lactones, and hemiacetals are all different types of molecules that do not allow for the polymerization of monosaccharides. Anhydrides are formed from the reaction of two carboxylic acids, lactones are formed from the reaction of a carboxylic acid and an alcohol, and hemiacetals are formed from the reaction of an aldehyde and an alcohol. None of these molecules are involved in the polymerization of monosaccharides.

In summary, the name of the group that allows for the polymerization of two monosaccharides to occur is glycoside.

To know more about glycoside refer here:

https://brainly.com/question/29717563#

#SPJ11

Answer: To determine how many grams of hydrazine are needed to produce 96.0 grams of water, we can use the mole ratio between hydrazine and water in the chemical equation.

First, we need to convert the number of grams of water to moles. We can do this using the molar mass of water, which is 18.0 grams/mole:

96.0 g H2O / 18.0 g/mol = 5.33 moles H2O

Next, we can use the mole ratio between hydrazine and water in the chemical equation to determine the number of moles of hydrazine that would be needed to produce 5.33 moles of water:

1 mole N2H4 / 2 moles H2O = 0.5 mole N2H4

Finally, we can use the molar mass of hydrazine (32.0 grams/mole) to convert the number of moles of hydrazine to grams:

0.5 mole N2H4 * 32.0 g/mol = 16.0 grams N2H4

Therefore, 16.0 grams of hydrazine are needed to produce 96.0 grams of water.

Answer:

amoeba is the unicellular organism which can be seen by only microscope but not with our nacked eyes

Answer:

An amoeba often called an amoeboid, is a type of cell or unicellular organism which has the ability to alter its shape, primarily by extending and retracting pseudopods Amoebae do not form a single taxonomic group; instead, they are found in every major lineage of eukaryotic organisms. Amoeboid cells occur not only among the protozoa, but also in fungi, algae, and animals.

name of parts of ameoba

3 parts – the cytoplasm, plasma membrane and the nucleus. The cytoplasm can be differentiated into 2 layers – the outer ectoplasm and the inner endoplasm. The plasma membrane is a very thin, double-layered membrane composed of protein and lipid molecule

i hope this will help you

Based on the given isotopic composition, the relative contribution of C3 plants is higher compared to C4 plants in the soil organic matter of Kenya.

To determine the relative contribution of C3 and C4 plants to the soil organic matter in Kenya based on their stable carbon isotopic composition, we can use the concept of isotopic discrimination.

C3 and C4 plants have different photosynthetic pathways, and they exhibit distinct carbon isotope signatures. C3 plants typically have a more negative δ13C value (around -30 permil to -22 permil), while C4 plants have a less negative δ13C value (around -16 permil to -9 permil).

In this case, the soil organic matter in Kenya has a δ13C value of -18 permil, while the air δ13C value is -7 permil. The difference between these values (-18 permil - (-7 permil)) gives us the isotopic discrimination between the atmosphere and the soil organic matter.

δ13C discrimination = δ13C organic matter - δ13C atmosphere

δ13C discrimination = -18 permil - (-7 permil)

δ13C discrimination = -11 permil

Since the δ13C discrimination is negative, it suggests that C3 plants have a dominant contribution to the soil organic matter. C4 plants, with their less negative δ13C values, are less likely to contribute significantly to the organic matter in this case.

Therefore, based on the given isotopic composition, the relative contribution of C3 plants is higher compared to C4 plants in the soil organic matter of Kenya.

Learn more about isotopic composition from the link given below.

https://brainly.com/question/10969592

#SPJ4

The cheese curds are formed due to the coagulation of the protein by acidic lemon juice.

We need to review the fundamental nature of the milk and the lemon juice. In this case, it must occur to us again that milk is made up of a protein and since it is a protein, we know that there is an optimum pH where a protein is able to function quite well. Outside that pH, the protein may not be able to function well.

Again the lemon juice is largely composed of acid since it is of the citrus family hence it contains the citric acid and this would cause the pH of the system to ow tilt towards the acid range.

Having laid these foundations, we can now see that when we do add the lemon juice to the milk the pH of the system is now outside the optimal and the protein in the milk would coagulate thus the cheese curds are formed.

Learn more about milk protein:https://brainly.com/question/21265328

#SPJ1

Answer:

1 kg of lead occupies the smallest amount of space of the four substances

Explanation:

The densities of lead, iron, gold, and copper are 11.34 g/cm^3, 7.87 g/cm^3, 19.32 g/cm^3, and 8.96 g/cm^3, respectively. Therefore, the volumes of 1 kg of lead, iron, gold, and copper are:

Volume of 1 kg lead = 1000 g / 11.34 g/cm^3 = 87.94 cm^3

Volume of 1 kg iron = 1000 g / 7.87 g/cm^3 = 126.98 cm^3

Volume of 1 kg gold = 1000 g / 19.32 g/cm^3 = 51.93 cm^3

Volume of 1 kg copper = 1000 g / 8.96 g/cm^3 = 111.84 cm^3

As we can see, a kilogram of lead has the lowest volume of the four substances, with a volume of 87.94 cm^3. This is because lead is the densest of the four substances, which means that it has the highest mass per unit of volume. Therefore, 1 kg of lead occupies the smallest amount of space of the four substances

It will take 0.02s to respond when the temperature suddenly changes.

Thermal diffusivity is significant because it can indicate the rate of thermal expansion of a substance. Lower heat diffusion rates are characterized by high values of thermal diffusivity. The material can therefore rapidly heat up or cool down. A higher heat diffusion rate results from a lower thermal diffusivity rating. As a result, it takes a long time for the material to heat up or cool down.

Thermal diffusivity is thus used to determine the best material to utilize based on how quickly or slowly heat dissipation is needed. It is utilized when choosing the type of material to use for heat sinks.

Here A is Thermal conductivity and a is Thermal diffusivity.

Choose metals that lie as far apart on the thermal diffusivity axis as possible, because this region maximizes the thermal displacement.

Copper and steel are probably not lead because it is too soft.

Hence, Cast Iron and Aluminium are selected.

The equation of response time is:

Response Time = (t/2)² / a

Here, t is the thickness and a is Thermal diffusivity.

Convert 2mm to m, it will be 0.002m

In the above equation, substitute 0.002m for t and 5 * 10⁻5 m²/s for a.

Response time = (0.002m/2)² / 5 * 10⁻5 m²/s

Response time = 0.02s.

Learn more about thermal diffusivity here:

https://brainly.com/question/12975861

#SPJ4

Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.

Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.

They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.

for such more questions on scientific

https://brainly.com/question/29886197

#SPJ8

Peanuts, or milk please leave like if right

Answer:

air

Explanation:

A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.

Answer:

Magnesium permanganate

Explanation:

Answer:

Magnesium Permanganate

Explanation:

Group on the periodic table has the largest number of elements is group 3

The periodic table is a tabular array of the chemical elements organized by atomic number from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number and the atomic number of an element is the number of protons in the nucleus of an atom of that element

Group 3 which comes under transition metals is the longest group consisting 32 elements and it contains lanthanide means 57 to 71 and actinide series means 89 to 103 and this comes under f block family

Know more about periodic table

https://brainly.com/question/28177183

#SPJ1

To make approximately a liter of pH 3.55 buffer, you would use 8.6 mL of 0.10 M HCOOH and 13.7 mL of 0.10 M HCOONa. We would use x mL of 0.10 M HCOOH and 0.4x mL of 0.10 M HCOONA to make approximately a liter of pH 3.55 buffer.

To prepare a pH 3.55 buffer using the available 0.10 M solutions of HCOOH (formic acid) and HCOONa (sodium formate), you can use the Henderson-Hasselbalch equation:
pH = pKa + log([A-]/[HA])
For formic acid (HCOOH), the pKa is approximately 3.75. We can rearrange the equation to find the ratio of [A-]/[HA]:
3.55 = 3.75 + log([HCOONa]/[HCOOH])
log([HCOONa]/[HCOOH]) = -0.20
[HCOONa]/[HCOOH] = 10^(-0.20) ≈ 0.63
Now, to make approximately a liter of buffer with a 0.10 M concentration, we can use the following:
0.10 L * (x + y) = 1 L
Since the ratio of [HCOONa]/[HCOOH] is 0.63, we can write:
x = 0.63y
Substitute x in the first equation:
0.10 L * (0.63y + y) = 1 L
0.73y = 10 L
y ≈ 13.7 L
Then, x ≈ 0.63 * 13.7 L ≈ 8.6 L

Learn more about pH here: https://brainly.com/question/15289714

#SPJ11