A sample of radon gas has a volume of 1.53 L, a pressure of 1.15 atm, and a temperature of 305 K. What is the new pressure if the new volume is 1.78 and the new temperature is 325 K

What is the difference between natural and artificial radioactivity?

Natural radioactivity comes from elements in nature. Artificial radioactivity comes from elements created in nuclear reactors and accelerators.

Answer:

natural is made from grass and artificial is made from toxic gas

Explanation:

yes

Answer:

Explanation:

I think the answer is   Heart &  stomach,   but is this really a chemistry question?  or Biology?   :D

Answer:

A: heart

Explanation:

A muscle cell is also known as a myocyte when referring to either a cardiac muscle cell (cardiomyocyte), or a smooth muscle cell as these are both small cells.

A mixture of calcium acetate and sodium phosphate would produce [tex]Ca_3(PO_4)_2[/tex] as a precipitate.

Precipitates are insoluble salt formed from the reaction of two soluble salts.

The equation of the reaction between calcium acetate and sodium phosphate is represented by the equation below:

[tex]3Ca(C_2H_3O_2)_2 + 2Na_3PO_4 --- > Ca_3(PO_4)_2 + 6NaC_2H_3O_2[/tex]

The [tex]Ca_3(PO_4)_2[/tex] produced in the reaction is an insoluble salt and, hence, a precipitate.

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Answer:

Water is a solvent.

Explanation:

What is solvent? Solvent is substance, ordinarily a liquid, in which other materials dissolve to form a solution.

Answer:

2 x 10^5 liters

Explanation:

P1V1 = P2 V2

P1V1 / P2  = V2  =  .05 *4 x 10^6  / 1  = .2 x 10^6  liters

Answer:

1.00

Explanation:

I honestly have no idea. I found this online and apparently it was correct. I thought at first I would use d = RT/(Nₐ * P *π (2r)². Since all values besides T are constant, I thought the ratio would just be (273+80)/273 since 273 is standard temperature in Kelvin. However, I think the answer is 1.00 since the pressure would also increase since it is a rigid container, effectively cancelling out the increase in temperature.

The ratio of the mean free path of air molecules at 80 °C to their mean free path at STP is approximately 0.934.

The mean free path (MFP) of gas molecules is the average distance they travel between collisions with other molecules. It depends on the temperature, pressure, and molecular size of the gas. The MFP of air molecules at standard temperature and pressure (STP) is about 68 nanometers.

To find the ratio of the mean free path of air molecules at 80 °C to their mean free path at STP, we need to use the following formula:

Ratio = (MFP at 80 °C) / (MFP at STP)

The MFP at 80 °C can be calculated using the kinetic theory of gases, which states that:

MFP = (k × T) / (sqrt(2) × pi × d² × P)

where k is Boltzmann's constant, T is the temperature in Kelvin, d is the molecular diameter, and P is the pressure.

For air molecules, d is about 0.364 nanometers. At 80 °C (353 K), the pressure of air is about 101.3 kPa. Plugging these values into the formula, we get:

MFP at 80 °C = (1.38 × 10⁻²³ J/K ×353 K) / (sqrt(2) × 3.14 ×(0.364 × 10⁻⁹m)² ×101.3 × 10³ Pa)

MFP at 80 °C = 63.5 nanometers

Now we can calculate the ratio:

ratio = (MFP at 80 °C) / (MFP at STP)

ratio = 63.5 nm / 68 nm

ratio ≈ 0.934

Therefore, the ratio of the mean free path of air molecules at 80 °C to their mean free path at STP is approximately 0.934.

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The equilibrium constant of the reaction is 1.21 * 10^6 while the change in free energy is -34.7 kJ.

The equilibrium constant shows the extent of conversion of reactants to products.

Now we know from the Nernst equation that;

Ecell = E°cell - 0.0592/n logQ

E°cell = 0.52−0.16=0.36 V

Since Ecell = 0 V at equilibrium,

0 = 0.36 - 0.0592/1 log K

0.36  = 0.0592/1 log K

log K = 0.36/ 0.0592

K = antiog (0.36/ 0.0592)

K = 1.21 * 10^6

ΔG = -RT lnK

ΔG =-(8.314 * 298 * ln1.21 * 10^6)

ΔG =-34.7 kJ

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Answer:

The answer is B a larva

Explanation:

Answer:

B. Larva

Explanation:

it is when a catipliar hatches

Answer:

160 K, using 2 SF,

Explanation:

Ideal Gas law, rearrange to solve for T (K), answer about 158.3 round to 2SF

PV = nRT

Answer:

In conduction, heat transfer takes place between objects by direct contact. In convection, the heat transfer takes within the fluid. In radiation, heat transfer occurs through electromagnetic waves without involving particles. The heat transfer takes place due to the difference in temperature.

Answer: 2.62 moles

Explanation:

For every 2 moles of ammonia that are produced, 1 mole of nitrogen is consumed.

This means that if 5.24 moles of ammonia are produced, 5.24/2=2.62 moles of nitrogen are consumed.

For  the molarity and the  percentage of the mass of kcl are mathematically given as

%m/m = 23.1%, molarity  = 3.38M

Generally, the equation for the  percentage of the mass of kcl is mathematically given as

(mass of kcl/mass of solution)x 100

therefore

%m/m = (6.31/27.29)x100

%m/m = 23.1%

The molarity

(no of mol/ vol of sol)

molarity  = 0.0846mol/0.0250 L

molarity  = 3.38M

In conclusion, the molarity is given as

molarity  = 3.38M

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Answer:

the b is the y-intercept of the line :D

The equilibrium constant gives us an idea of the extent of reaction. For the reaction; 2GeCl4(g) = 2Ge(g) + 4Cl2 (g), the equilibrium constant is 1 * 10^-20.

The equilibrium constant gives us an idea of the extent of the conversion of reactants to products in a reaction.

In this case, we know that 2GeCl4(g) = 2Ge(g) + 4Cl2 (g) is the reverse of Ge (g) + 2Cl2 (g) <-> GeCl4 (g) hence we only need to invert the value of the equilibrium constant and raise it to power 2 to have 1 * 10^-20.

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Following the equation and the stoichiometry of the reaction,  excess reactant.

The excess reactant has to do with that reactant that is present in more amount than is required in the reaction.

In this case, we have the reaction; 2NBr3 + 3NaOH ---> N2 + 3NaBr + 3HOBr.

If 2 moles of NBr3  reacts with 3 moles of NaOH

x moles of NBr3   reacts with 48 moles of NaOH

x = 32 moles

Hence, NBr3 is the excess reactant.

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Answer:

a)true. b)true c)false d)true e)false f)false g)true h)true

Answer:

it can be in the production of nitric acid

Answer:

Explanation:

Nitrogen oxides are used in the production of nitric acid, lacquers, dyes, and other chemicals. Nitrogen oxides are also used in rocket fuels, nitration of organic chemicals, and the manufacture of explosives.

Answer:

A. A thunderstorm can form.

Explanation:

When it meets warmer air a cold front forms and clouds will appear as the warm air rises and then cools. This may lead to heavy rain along the cold front.

The heat lost by copper(ii) sulfate is equal to heat absorbed by water since the total energy in the system remains constant according to the law of conservation of energy.

The number of moles of a substance is determined using the formula below:

Assuming the mass of copper(ii) sulfate used is Mc, number of moles of copper(ii) sulfate used is:

The heat absorbed by water is calculated using the formula below:

mass of water = 10 g

Let temperature change be Tc

Heat absorbed by water = 10 × 4.186 × Tc = 41

86Tc

The change in internal energy, ΔU of copper(ii) sulfate, is given as:

where:

Q =  heat absorbed by water

W  =  work done by or on the system

The enthalpy of the reaction is given as:

Therefore, according to the law of conservation of energy, the total energy in the system remains constant.

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Answer: 0.05 A

Explanation:

Hope this helps!

A video-disc player that is not playing still uses 6.0 W of power. The current is  0.05 A.

What is Power?

The quantity of energy moved or converted per unit of time is known as power in physics. The watt, or one joule per second, is the unit of power in the International System of Units. Power is also referred to as activity in ancient writings.  A scalar quantity is power.

Power is related to other factors; for instance, the power required to move a ground vehicle is equal to the product of the vehicle's velocity, traction force on its wheels, and aerodynamic drag.

A motor's output power is calculated by multiplying its torque output by the angular velocity of its output shaft. Similar to how the power expended in an electrical component of a circuit is the result of the current.

Therefore, A video-disc player that is not playing still uses 6.0 W of power. The current is  0.05 A.

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Answer:

Moles= 11/44 = 0.25 molesof CO2. Click to see full answer Considering this, how many moles of carbon are in 1 mole of co2? A mole of CO2molecules (we usually just say “a mole of CO2”) has one moleof carbonatoms and two molesof oxygen atoms.

Exxplanation:

Answer:

I don't know that anwser sorry

The removal of this ion from water by the calcifiers will definitely decrease the pH of water.

The bicarbonate ion is the ion that is designated as HCO3-. We must notice that this ion is present in abundant amounts in the sea. This amount definitely make the sea slightly alkaline.

Now we must note that the removal of this ion from water by the calcifiers that require it to make their shell will definitely decrease the pH of water.

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Answer:

Explanation:

It's not 1:1 as the ratio implies

There's a 6 in front of the NaBr

There's a 3 in front of the Na2S  

Arguement

The ratio is (6 NaBr // 3 Na2S}  

Answer

The ratio is {2 NaBr:: 1 Na2S}

Answer:

There are four types of friction: static, sliding, rolling, and fluid friction. Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding

Explanation:

hope i help!.

The liquid which has a low boiling point and is a poor conductor of electricity is Methane (CH4).

Covalent Compounds are compounds with low boiling point and are poor conductors of heat and electricity. Covalent compounds have strong intra-molecular bonds. This is because the atoms within the covalent molecules are very tightly held together.

Methane (CH4) is a liquid that has a low boiling point and is a poor conductor of electricity.

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Answer:

About 0.37 M.

Explanation:

Recall that molarity is defined by moles of solute over total liters of solution:
[tex]\displaystyle \text{Molarity} = \frac{\text{ mols solute}}{\text{ L soln.}}[/tex]

Determine the amount of moles of HCl in 40.0 grams. The molecular weight of HCl is 36.46 g/mol:

[tex]\displaystyle 40.0\text{ g HCl} \cdot \frac{1\text{ mol HCl}}{36.46\text{ g HCl}} = 1.10\text{ mol HCl}[/tex]

Therefore, the molarity of the 3.0 L solution is:

[tex]\displaystyle\text{Molarity} = \frac{1.10\text{ mol}}{3.0\text{ L}} =0.37\text{ M}[/tex]

In conclusion, the molarity of the solution is about 0.37 M.

Answer:

The answer is 164.1 g/mol

Explanation: