At the top of a mountain, the pressure is found to be 0.52 atmospheres. How does this compare to standard atmospheric pressure at sea level?

Mass is never lost or gained in chemical reactions. So we can say that mass is always conserved. In other words, the total mass of products at the end of the reaction is equal to the total mass of the reactants at the beginning.

This fact allows you to work out the mass of one substance in a reaction if the masses of the other substances are known. 

The total count of the beans and peas in the container is 364 and green peas are 144 out of these. The percentage of green peas in the container is (144/364) * 100 = 39.56%.

To calculate the percentage of green peas amongst all the beans and peas in the container, we firstly need to total all the different type of beans and peas, and then calculate what percent of that total is made up of green peas.

Firstly, calculate the total count: 125 lima beans + 56 garbanzo beans + 39 kidney beans + 144 green peas = 364 items in total.

Next, use the formula for calculating percentages: (part/total) * 100. In this case, the 'part' is the number of green peas (144) and the 'total' is the total number of items (364). So the calculation will be: (144/364) * 100 = 39.56%. Hence, the green peas make up approximately 39.56% of the total count of beans and peas in the container.

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Answer:

7. 40°C

8. 6.67°C

Explanation:

7. 20*2=40°C

8. The balloon has reduced in size by 3 times. So, the collision ant the temperature must be 3 times less. So =20/3= 6.67°C

Answer:

The gravitational force acting on it decreases.

Final answer:

The sparks from a sparkler and tiny droplets of boiling water both have high thermal energy, transferring this energy to the skin upon contact, causing a burn. A static electricity spark from a doorknob is too brief to harm you. Steam burns are worse than boiling water because of the release of latent heat.

Explanation:

When a sparkler comes into contact with your skin, the hot sparks cause a sensation similar to tiny droplets of boiling water hitting your skin. Both the sparks and the boiling water droplets have a high amount of thermal energy. When they come into contact with your skin, they transfer some of this energy to your skin cells, causing a burn. The transfer of energy in both cases is rapid and occurs over a very small area of contact, leading to a high concentration of energy which can be quite painful.

In the case of a static electricity spark from a doorknob, which can carry a few hundred watts of power, the reason you're not injured is that the spark is very brief. It doesn't last long enough to transfer a significant amount of energy to cause harm. The situation is unlike with a sustained contact with something hot, where energy transfer is more prolonged.

Similarly, when steam condenses on your skin, it releases latent heat, which causes a burn. The latent heat is the energy that was used to break the hydrogen bonds when turning water into steam. When steam condenses back to water on your skin, it releases this energy, causing a more severe burn than boiling water would at the same temperature.

Answer:

The gas pressure decreases by half its initial value.

Explanation:

From Boyle's law, the reationshipp between volume and pressure at constnat temperature is an inverse one. This proves that as the volume of a gas increases, its pressure decreases respectively. So, the answer to the question is that the gas pressure would decrease accordingly.

35 is the answer

hope im right

Earth is the only planet in our solar system with large amounts of liquid water, a solid inner core, and a 24-hour rotation period, making it uniquely capable of supporting life.

The planet that matches the criteria mentioned in the question is Earth. Earth is the third planet from the Sun and the only one we know of that has large amounts of liquid water, an atmosphere with oxygen, and is suitable for life. Earth also has a solid inner core, a surface mostly covered with water, and a period of rotation approximately equal to 24 hours. Unlike Venus, which rotates slowly in the opposite direction, and Mars with its red soil and ice caps, Earth has conditions considered 'just right' for development and sustenance of life.

Furthermore, the outer planets are gas giants and significantly different from Earth. They do not have solid surfaces or conditions that would allow for the presence of liquid water as we know it. Earth's moon, which is large and round, is unique among the inner planets. The combination of these features validates that Earth is the planet being described.

[tex]\left[\begin{array}{cccc}&Volume(L)&Pressure(atm)&Temperature(K)\\Methane&2.8&1.65&298\\Oxygen&35&1.25&304\end{array}\right][/tex]

note: K = C° + 273 (Temperature conversion, Celsius to Kelvin)

note:  [tex]Ideal \ Gas \ Law: \ PV=nRT \ \ \ (R = 0.082 \ \frac{L \times atm }{K \times mol} )[/tex]

Formula to find moles is:  [tex]n=\frac{PV}{RT}[/tex]

[tex]\space \\CH_{4} \ : \ n = \frac{1.65 \times 2.8}{298 \times 0.082} = 0.19\ mol \ (limiting \ reactant)[/tex]

[tex]O_{2} \ : \ n = \frac{1.25 \times 35}{304 \times 0.082} = 1.75\ mol \ (2 \times 0.19 = 0.38 \ mol \ is \ enough)[/tex]

note: moles of CO₂ is the same as of CH₄, as can be seen from the chemical equation above, which is 0.19 mol.

[tex]\left[\begin{array}{ccccc}&Volume(L)&Pressure(atm)&Temperature(K)&Moles(mol)\\CO_{2} &?&2.5&398&0.19\end{array}\right][/tex]

Formula to find Volume is:  [tex]V=\frac{nRT}{P}[/tex]

[tex]CO_{2} \ : \ V = \frac{0.19 \times 0.082 \times 398}{2.5} = 2.48 \ L[/tex]

Answer:

he never got his brainliest...

Explanation:

Final answer:

When a poodle and a terrier mate, the size of their puppies can vary, and traits such as size are influenced by multiple genes from both breeds.

Explanation:

The specifics of how traits such as size are inherited in dogs can be quite complex because they are influenced by multiple genes, and these genes can have different modes of inheritance. When a poodle mates with a terrier, the offspring, which is a mixed breed or a crossbreed like the known cockapoo, will inherit a combination of traits from both parents. The size of the puppies can vary and may be somewhere in between the sizes of the parent breeds. To predict the exact size of the puppies, one would need information on the specific genes that determine size in both the poodle and the terrier, and how they interact when combined. While domestic dogs display a wide range of physical characteristics, most dogs of different breeds are capable of interbreeding and producing viable offspring.

The electron.

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Answer:

Mass, m = 30 grams

Explanation:

It is given that,

Density of an object, [tex]d=3\ g/ml[/tex]

Volume occupies by the silver, [tex]V=10\ ml[/tex]

We need to find the mass of a piece of silver. The mathematical formula for the density is given by :

[tex]d=\dfrac{m}{V}[/tex]

[tex]m=d\times V[/tex]

[tex]m=3\ g/ml\times 10\ ml[/tex]

m = 30 grams

So, the mass of the piece of the silver is 30 grams. Hence, this is the required solution.

The density of a Material

The density of a material is defined as the mass per unit volume

it formula is given as

Density = Mass/Volume

and the unit is g/cm^3

Explanation:

Given data

Mass = ???

Volume = 10mL

Density =  3g/ml

Hence the mass is expressed as

Mass=  density /Volume

Mass= 3/10

Mass= 0.3g

Therefore the Mass is 0.3g

for more information on density see the link below

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a b c d no a no b yes c no d ok

The molarity of the solution formed by mixing 0.20 mol of sodium hydroxide with enough water to make 150 ml of solution is 1.33 M.

To find the molarity of the solution formed by mixing 0.20 mol of sodium hydroxide with enough water to make 150 ml of solution, you need to calculate the number of moles of sodium hydroxide and then divide it by the volume of the solution in liters. Firstly, convert the volume of the solution to liters by dividing it by 1000. Then, divide the number of moles of sodium hydroxide by the volume of the solution in liters to get the molarity.

Molarity (M) = moles of solute / volume of solution (in liters)

Molarity = 0.20 mol / (150 mL / 1000) = 1.33 M

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Heat is the amount of energy transferred from and to the object or the substance of the system. When heat flows into a system its value is positive.

Change in the free energy of the system is shown as [tex]\rm (\Delta G)[/tex] it tells about the reversible work performed by the system in thermodynamically constant pressure and temperature.

The enthalpy is equal to the heat formation and is shown as [tex]\rm (\Delta H)[/tex]. It represents the total heat content of the reaction and enthalpy change of the final and the initial system.

Q or the heat when flows in the system for the reaction is a positive value as the energy of the system gets increased while when the heat is released from the reaction then the value is negative as the energy decreases.

Therefore, heat transfer to the system is positive.

Learn more about the heat here:

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The atomic radius generally increases as we move down a group and from left to right across a period, due to an increase in energy levels and nuclear charge.

The atomic radius generally increases as we move down a group and from left to right across a period.

As we move down a group, the number of energy levels increases, resulting in larger atomic radii. This is because each subsequent energy level is farther from the nucleus.

As we move from left to right across a period, the atomic radius generally decreases. This is because the increasing nuclear charge attracts the electrons more strongly, causing the atomic size to decrease.

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Answer: The mass of sodium hydroxide is 10 grams.

Explanation:

To calculate the mass of a substance, we use the equation to calculate the number of moles, we get:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

We are given:

Moles of sodium hydroxide = 0.25 mol

Molar mass of sodium hydroxide = 40 g/mol

Putting values in above equation, we get:

[tex]0.25=\frac{\text{Mass of sodium hydroxide}}{40g/mol}\\\\\text{Mass of sodium hydroxide}=10g[/tex]

Hence, the mass of sodium hydroxide is 10 grams.

Hello there!

Sometimes it is good to go on a diet for us. Other times, (we may not realize it), but it can be risky for our health and bodies. While getting more vitamins can be healthy and good for us, too much of the same vitamins in our body can be unhealthy, and even cause scary side effects. Do not be misled, the title “vitamin”, does not mean “use generously”. Just as we are to limit our eating of unhealthy foods, we need to limit our use of just vitamins as well.

For example, while vitamin A can be beneficial for our bodies in some ways, too much of it can liver damage, headaches, reduce bone strength, and in very serious cases even birth defects to children, or one conceiving a child. Yes, we need just enough to keep us healthy an active. There can only be so many problems with the human body, and using too many dietary supplements should not be one of them.

Hope this helps!

~DL

Exactly what the other guy said except its in kJ on k12. So 0.33 kJ

Answer: C. Methane

Explanation: