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Balancing Equation

Answer:

D. Electrical charge

Explanation:

What actually caused the tissue paper to move towards the balloon is "electrical charge".

When they rubbed the balloon with a piece of wool, the wool looses electrons which gives it a positive charge while the balloon gains electrons which gives it a negative charge.

The pieces of tissue paper is able to move toward (i.e attracted) the balloon because the negatively charged balloon is attracted to the positively charged tissue paper which was neutral.

Answer:

D

Explanation:

At constant temperature, the final pressure of the compressed gas is 5.0atm.

Given the data in the question;

Final pressure; [tex]P_2 = \ ?[/tex]

Boyle's law states that the volume V of a given quantity of gas is inversely proportional to its pressure P at constant temperature.

It is expressed as;

[tex]P_1V_1 = P_2V_2[/tex]

Where [tex]P_1[/tex] is Initial Pressure, [tex]V_1[/tex] Initial volume, [tex]P_2[/tex] is Final Pressure and [tex]V_2[/tex] is Final volume.

To determine the final pressure of the gas, we substitute our given values into the expression above.

[tex]P_1V_1 = P_2V_2\\\\P_2 = \frac{P_1V_1}{V_2} \\\\P_2 = \frac{1.0atm \ *\ 4L}{0.800L}\\ \\P_2 = \frac{1.0atm \ *\ 4}{0.800}\\\\P_2 = \frac{4.0atm}{0.800}\\\\P_2 = 5.0atm[/tex]

Therefore, at constant temperature, the final pressure of the compressed gas is 5.0atm

Learn more about Boyle's law: brainly.com/question/1437490

Answer:

Infrared radiation has longer waves than red light, and thus oscillates at a lower frequency and carries less energy. Ultraviolet radiation has shorter waves than blue or violet light, and thus oscillates more rapidly and carries more energy per photon than visible light does.

Explanation:

Answer:

fasting blood work

Explanation:

edge 2022

Answer:

.5 moles of calcium

Explanation:

We want to find the number of moles in 3.01 x 10^23 atoms of calcium

To convert atoms to moles, we simply divide the given number of atoms by Avogadro's number , 6.022 x 10^23

Given number of atoms : 3.01 x 10^23

Number of moles : 3.01 x 10^23 / 6.022 x 10^23 = .5 moles of calcium ( rounded )

Answer: ThankYou So much your name is Jacob!

Explanation: Hello

Answer: Thanks for the Free Points Brother!

Explanation: Yay! :D

Answer:

I think

0.6 moles of nitrogen

1. Summer Solstice

Summer Solstice is an astronomical event that marks the longest day of the year and the official beginning of summer in the Northern Hemisphere. It takes place when the sun reaches its highest point in the sky, directly over the Tropic of Cancer. During this time, the days have the most hours of sunlight and the nights have the least hours of darkness. This is due to the Earth's tilt in relation to the Sun. On the day of the Summer Solstice, the sun rises earliest and sets latest. This event is celebrated around the world, with many cultures creating rituals to honor the season. In the U.S., some people celebrate by gathering together for festivals, bonfires and fireworks. Others mark the day by practicing yoga, meditating or spending time outdoors in nature. Summer Solstice is a time of renewal and celebration, a reminder of the power of light, and of the beauty of the changing seasons.

2. seasons

3. Winter Solstice

4. Equinoxes

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#SPJ1

Answer: Particles are moving from regions of high concentration to low concentration.

Explanation:

Diffusion is driven by differences in concentration. When chemical substances such as perfume are let loose in a room, their particles mix with the particles of air. The particles of smelly gas are free to move quickly in all directions. They eventually spread through the whole room from an area of high concentration to an area of low concentration. This continues until the concentration of the particles of smelly gas is the same throughout the room. Remember that the particles still move, even when the smell is evenly spread.

Answer:

Answer: Particles are moving from regions of high concentration to low concentration.

Explanation:

right on edge 2021

Answer:

CH₄ +2S₂ → CS₂ +2H₂S

Explanation:

Taking into account the reaction stoichiometry, you can observe that:

In first place, the balanced reaction is:

Ca₃P₂ + 6 H₂O  → 3 Ca(OH)₂ + 2 PH₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Then, by reaction stoichiometry, you can observe that:

Learn more about the reaction stoichiometry:

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A hot metal with a low heat capacity will raise the final temperature of water more than a hot metal with high heat capacity.

It is the amount of heat required to change the temperature of a substance by just a unit.

Substances that heat up quickly are said to have low heat capacities while those that take time to heat up are said to have high heat capacities.

Substances with low heat capacity also release their thermal energy quicker than those with high heat capacity.

Thus, a hot metal with low heat capacity will readily transfer its thermal energy to water than a hot metal with high heat capacity.

More on heat capacities can be found here: https://brainly.com/question/11194034

Answer:

Drier air over land than water

                   OR

A:warmer air over land than water

Answer:

70.9% or 71% yield

Explanation:

actual yield/theoretical yield * 100% = % yield

6.98/9.84 * 100 = 70.9

Answer:

800 grams

Explanation:

Density = mass/volume  =>  mass = Density x Volume

Density = 0.80 g/ml

Volume = 1.0 Liter = 1000 ml

mass of 1.0 liter = 0.80 g/ml X 1000 ml = 800 grams

Answer:

Plant A

Explanation:

This is because Plant A is what you will compare to the other plants. Because it has no fertilizer is is the independent variable.

Answer:Ithink erosion cuz if we can tell how long ago it eroded we can see how old it is

Explanation:

Answer:

The relationship between the boxer crab and the anemone is a form of symbiosis, called mutualism.

Explanation:

The boxer crab —Lybia tesselata— receives its name because it carries anemones in its anterior claws, in the form of boxing gloves, constituting a symbiotic association of a mutual type.

Mutualism is an interspecific relationship where two individuals of different species benefit from each other.

The anemone —usually of the genus Triactis or Bunodeopsis— has tentacles capable of secreting a stinging substance that contributes to the defense of the crab against its natural predators. On the other hand, the crab helps the anemone to transport and feeds on the food remains left by the crab.

Answer:

Na₂SO₄·10H₂O.

Explanation:

Hello.

In this case, since the anhydrous sodium sulfate is:

[tex]Na_2SO_4[/tex]

Whose molar mass is:

[tex]M=23+32+16*4=142 g/mol[/tex]

But the total hydrate's molar mass is 322.1 g/mol, we can compute the mass of water:

[tex]m_{water}=322.1-142=180.1g/mol[/tex]

Thus, the molecules of water are found by diving the total mass of water by the mass of one mole of water:

[tex]#water=\frac{180.1}{18}=10[/tex]

It means, that the formula is Na₂SO₄·10H₂O.

Best regards.

Answer:

When there are too many protons, some of the outer protons are loosely bound and more free to react with the electron. But most atoms do not have too many protons, so there is nothing for the electron to interact with. As a result, each electron in a stable atom remains in its spread-out wavefunction shape.

In an atom, there is a nucleus made up of neutral charged, neutrons, and positively charged protons. The reason why electrons which are negatively charged, don't fly off is due to its stronger attraction to the protons. ... This, however, still allows the electrons to move around the nucleus of an atom.

Answer:

Electron charge: -1

Neutron charge: 0

Proton charge: +1

The compound, solid Al2O3, is formed from solid aluminum and oxygen gas under certain conditions.

Solid aluminium oxide, Al2O3, is formed from its components elements as follows:

2Al (s) + 3O2 (g) ----------> 2Al2O3 (s)

The state of the aluminum element is solid, that of oxygen is gas, and that of the product, Al2O3, is solid.

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Answer:

B/Ti

Explanation:

Answer:mg D

Explanation:A P E X

Because the positive part of water molecules attracts negative chloride ions and the negative part of water molecules attracts positive sodium ions, water may dissolve salt. The solubility of a material is the quantity of that substance that can dissolve in a liquid (at a given temperature).

Answer:

Check the attached one..I only draw the Dot method of Magnesium and Fluorine.. since i love chemistry ..Hope this helps you...Balance you have to do it yourself..If you didn't get the answer let me know in the comments..But you have try okay..

Answer:

Explanation:

Your circulatory system carries oxygen, water, and nutrients to cells throughout your body. Wastes from the cells are eliminated by your respiratory system, your excretory system, and your skin. Your nervous system controls all these activities with electrical impulses.

Answer:

Explanation:

Given data:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Answer:

165.48 amu

Explanation:

First, you need to find the last percentage.

100% = 60.44% + 13.55% + x

100% = 73.99% + x

x = 26.01%

Now, multiply each mass by the respective percentage.

164.08 × 0.6044 = 99.17

165.11 × 0.1355 = 22.37

168.92 × 0.2601 = 43.94

Lastly, add the products together to find the average atomic mass.

99.17 + 22.37 + 43.94 = 165.48

The average atomic mass of "knoxium" is 165.48 amu

Explanation:

p=mv

=(4.237)(2.5x10^-2)^3

=6.6x10^-5 kgm-3