Given that nitrogen forms
three bonds with hydrogen to
make NH3, how many hydrogen
atoms do you think will bond
with an atom of phosphorous?

Answer:

it keeps the heat in and the bugs and flys out

Explanation:

Answer:

p and n

Explanation:

Answer:no answer

Explanation:

Temperature. Usually reactions speed up with increasing temperature. Physical state of reactants. Powders react faster than blocks - greater surface area and since the reaction occurs at the surface we get a faster rate.

Answer:

option b is correct

as it have same number of atoms on both the reactant and product side.

The molar mass of insulin is approximately 0.798 g/mol, calculated using the equation for osmotic pressure and the given values of mass and volume.

To calculate the molar mass of insulin, we can use the equation for osmotic pressure:

π = (n/V)RT

where π is the osmotic pressure, n is the number of moles of solute, V is the volume of the solution in liters, R is the ideal gas constant, and T is the temperature in Kelvin.

First, convert the given values to appropriate units:

25.0 mg = 0.025 g
5.00 mL = 0.005 L

Next, rearrange the equation to solve for n (number of moles):

n = (πV) / (RT)

Substituting the given values:

n = (15.5 mmHg * 0.005 L) / ((0.0821 L·atm/(mol·K)) * 298 K)

Calculate n:

n ≈ 0.0313 mol

Finally, divide the mass of insulin (0.025 g) by the number of moles (0.0313 mol) to find the molar mass:

Molar mass = 0.025 g / 0.0313 mol

Molar mass ≈ 0.798 g/mol

So, the molar mass of insulin is approximately 0.798 g/mol.


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Answer:

C- The core is made up of dense elements, such as iron and nickel.

Answer: 32.06 atomic mass units

Explanation:

The balanced chemical equation is NH₄Cl + NH₄OH = NH₃ + HClH₂O.

What is balanced chemical equation?

A chemical equation is said to be balanced if the same amount of atoms of each type are involved in the reaction on both the reactant and product sides.

As given two compounds formula are NH₄OH, and NH₄HCl.

Add both compounds as follows:

NH₄Cl + NH₄OH

And then form a product.

NH₄Cl + NH₄OH = NH₃ + HClH₂O

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Answer:

104.969 amu.

Explanation:

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

Isotope A:

Mass of A = 107.977 amu

Abundance (A%) = 0.1620%

Isotope B:

Mass of B = 106.976 amu

Abundance (B%) = 1.568%

Isotope C:

Mass of C = 105.974 amu

Abundance (C%) = 47.14%

Isotope D:

Mass of D = 103.973 amu

Abundance (D%) = 51.13%

Average atomic mass =?

The average atomic mass of the element can be obtained as follow:

Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]

Average atomic mass = [(107.977 × 0.1620)/100] + [(106.976 × 1.568)/100] + [(105.974 × 47.14)/100] + [(103.973 × 51.13)/100]

= 0.175 + 1.677 + 49.956 + 53.161

= 104.969 amu

Therefore, the average atomic mass of the element is 104.969 amu.

The percentage of the water entering the small intestine is absorbed by the small intestine is 92.02%

Volume of water that is leaving the small intestine should be

= 9400 - 750

=8650 ml

Now the percentage should be

= (8650/ 9400)100

= 92.02 %

Thus 92.02 % of the total water entering the small intestine is absorbed itself by the small intestine.

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Answer:

56.52 units

Explanation:

hope that helps :)

The appearance and observable qualities of matter are considered to be its physical attributes. Colour, smell, taste, solubility, etc. An attribute that appears during a chemical reaction is known as a chemical property. A few examples include pH, reactivity, and flammability, etc. The correct option is B.

The chemical makeup or content of matter are not altered after a physical transformation.  The internal makeup is unaffected as molecules rearrange themselves during this transformation. The chemical attribute is unaffected by a physical change.

Here both crushing a mineral into powder and picking up a paper clip with a magnet are physical changes.

Thus the correct option is B.

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Answer:

62 L

Explanation:

We are given that:

n = 2.3 mol

R = 0.082 L*atm/(mol*K), the ideal gas constant in the required units

T = 290 K

P = 0.89 atm.

therefor:

V = nRT/P

= [(2.3 mol)(0.082 L*atm)(290 K)/(mol*K)]/(0.89 atm)

= 62 L

The volume of 2.3 mol CL2 will be 62 L.

A three-dimensional element's area of coverage. The measurement of volume is done in cubic units. Decibels are a unit of measurement for the volume of sound.

Calculation of volume.

Volume can be determined by using the formula.

PV = nRT

where, P = pressure, V = volume, n = number of moles, R = gas constant and T = temperature,

It is given that, n = 2.3 mol, T = 290 K and P = 0.89 atm.

Put the value of given data in volume equation,

V = n RT/ P

V = 2.3 mol × 0.082 × 290 /0.89

V = 62 L.

Therefore, the volume will be 62 L.

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Answer:

2.38 g of oxygen (O2).

Explanation:

What is given?

Mass of potassium chlorate (KClO3) = 6.06 g.

Molar mass of KClO3 = 122.4 g/mol.

Molar mass of oxygen (O2) = 32 g/mol.

Step-by-step solution:

First, let's state the balanced chemical equation. Remember that the decomposition of a compound produces two or more products:

Now, let's convert 6.06 g of KClO3 to moles using its molar mass:

You can see in the chemical equation that 2 moles of KClO3 produce 3 moles of O2. By doing a rule of three with this data, we obtain that:

The final step is to convert from 0.0743 moles of O2 to grams using its molar mass, like this:

The answer is that we will produce 2.38 g of oxygen (O2) from the decomposition of 6.06 g of potassium chlorate (KClO3).

Polar and non-polar molecules are terms used to describe the distribution of electric charge in a molecule. An example of a polar molecule is water (H2O) and non-polar molecule is methane (CH4).

A polar molecule is one in which the distribution of electric charge is uneven. This means that one end of the molecule has a positive charge, while the other end has a negative charge. An example of a polar molecule is water (H2O).

On the other hand, a non-polar molecule is one in which the distribution of electric charge is even. This means that there is no positive or negative charge at either end of the molecule. An example of a non-polar molecule is methane (CH4).

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Empirical formula units is 2 and the molecular formula is CxHyOz.

Molar mass-The molar mass of a chemical compound is determined by dividing its mass by the quantity of that compound, expressed as the number of moles in the sample, measured in moles. The molar mass of a substance is a bulk attribute rather than a molecular one.Calculate the molar mass of a substance by adding the molar masses of its constituent atoms.

There are 40.0 in 100 g of the unknown.

40.0⋅g/12.011⋅g⋅mol−1C

6.7⋅g/1.00794⋅g⋅mol−1 H and

53.5⋅g/16.00gmol−1  

We divide by to get C : H : O.

=3.33:6.65:3.34

. We get an empirical formula of C H 2 O by dividing each elemental ratio by the LOWEST number, which is close enough to WHOLE numbers.

Now the molecular formula is always a multiple of the empirical formula; i.e.

(EF)n=MF.

So 60.0⋅g.mol−1=n×(12.011+2×1.00794+16.00)g⋅mol−1.

Clearly n=2, and the molecular formula is×(CH2O) =CxHyOz.

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It is more difficult to precipitate cupric acetate (verdigris) than cupric carbonate hydroxide (malachite) is due to the solubility of the compounds. Cupric acetate is more soluble in water compared to cupric carbonate hydroxide.

Cupric acetate requires a higher concentration of the precipitating agent to effectively precipitate cupric acetate. In addition, the formation of malachite involves a chemical reaction between copper ions and carbonate ions in the presence of hydroxide ions, which leads to the formation of a solid precipitate. On the other hand, the formation of verdigris involves the reaction between copper ions and acetic acid to form a complex compound, which makes it more difficult to precipitate.

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Sodium fluoride (NaF) is a competitive inhibitor of the enzyme enolase, which is involved in the glycolysis pathway of cellular respiration. When NaF is added to a respiration reaction, it can inhibit the production of pyruvate and consequently decrease the rate of respiration.

However, the addition of pyruvate to a NaF-inhibited respiration reaction can overcome this inhibition by increasing the concentration of substrate available for the Krebs cycle. The Krebs cycle, also known as the citric acid cycle, is responsible for producing ATP, NADH, and FADH2 from acetyl-CoA, which is derived from pyruvate.

By increasing the concentration of pyruvate, the rate of respiration can increase because more pyruvate can be converted to acetyl-CoA, providing more substrate for the Krebs cycle. This leads to an increase in the production of ATP and other products of cellular respiration.

Overall, the addition of pyruvate to a NaF-inhibited respiration reaction can overcome the inhibition of NaF by increasing the concentration of substrate available for the Krebs cycle and ultimately leading to an increase in the rate of respiration.

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When the mixture of tea or coffee is added to dichloromethane and water and the mixture is agitated, the caffeine molecules will dissolve in the dichloromethane layer, which is the top layer. This is because caffeine is a non-polar compound that is more soluble in non-polar solvents, such as dichloromethane.

On the other hand, the polar components of the mixture, such as water-soluble organic acids and sugars, will dissolve in the water layer, which is the bottom layer. The two layers can then be separated by draining off the lower aqueous layer, leaving the top organic layer containing the caffeine.

Caffeine can be extracted from a mixture of tea or coffee using dichloromethane and water. Dichloromethane (also known as methylene chloride) is a non-polar solvent, meaning that it does not dissolve well in water, which is a polar solvent.

It's worth noting that extraction is a separation technique that relies on the differential solubility of the components in a mixture. By choosing a suitable solvent system, it is possible to selectively extract a specific compound, such as caffeine, from a complex mixture.

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Answer:

Hello I saw you guys were having trouble please put me as the brainiest

Explanation:

1. Golgi Apparatus

2. Nucleus  

3. Endoplasmic Reticulum  

4. Mitochondrion  

5. Ribosome

6. Lysosome  

Answer:

I think the answer is A. The distance is to great.

Answer:

3.06 atm

Explanation:

Using general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (litres)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK

T = temperature (K)

According to the information provided in this question, V = 4L, T = 25°C = 25 + 273 = 298K, n = ?

Mass of He gas = 2.0g

Using mole = mass ÷ molar mass

Molar Mass of He = 4g/mol

mole = 2/4

mole = 0.5mol

Using PV = nRT

P = nRT/V

P = 0.5 × 0.0821 × 298 ÷ 4

P = 12.233 ÷ 4

P = 3.06 atm

Hence, the pressure inside the container is 3.06atm.

The temperature on the axis of an H-R diagram is increasing from right to left. Hence, option D  is correct.

One of the most crucial tools for studying star evolution is the HR diagram, often known as the Hertzsprung-Russell diagram (HR diagram). It was separately created by Ejnar Hertzsprung and Henry Norris Russell in the early 1900s and shows either the color of stars (or spectral type) against their absolute magnitude or the temperature of stars against their brightness.

Every star goes through several developmental stages that are determined by its internal structure and method of energy production depending on its starting mass.

The temperature and luminosity of the star fluctuate with each of these stages, and as the star develops, it may be seen moving to various locations on the HR diagram. This demonstrates the real power.

In this diagram, the temperature is decreasing from left to right and luminosity increases from bottom to top. Hence, option D is correct.

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Answer:

C2H6 has the greatest amount of atoms.

Explanation:

Answer:

Due to presence of a triple bond between the two N−atoms, the bond dissociation enthalpy (941.4 kJ mol  

−1

) is very high. Hence, N  

2

​

 is the least reactive.