Question 9/10
As a boulder rolls from the top of a hill to the bottom, how does its potential and kinetic energy change?
A. Potential and kinetic energy both increase.
B. Potential increases and kinetic decreases.
C. Potential decreases and kinetic increases.
D. Potential and kinetic energy both decrease.
please help quickly

Answer:

An atom is made of protons and neutrons which make up the nucleus and electrons that are around the nucleus. Although almost all the mass of an atom is in the nucleus, most of the space that the atom takes up is occupied by the electrons.

In very simple terms, the electrons are in orbits around the nucleus so most of the volume of the atom is empty space within the volume that the electrons occupy. The behaviour of the electrons is often assumed to be orbits but their actual positions are not that simple.

As a final note, all atoms contain neutrons with the exception of hydrogen which can exist as one proton and one electron.

Explanation:

Answer:

1) Gaining

2) More

3) More

4) increases

5) decreases

Explanation:

Nonmetals are found towards the right hand side of the periodic table. They form ions by gaining electrons due to the fact that they have more electrons in their outermost shell, hence they only need a few electrons to complete the octet structure.

As the number of shells increases, the outermost shell becomes more populated and easier to fill with electrons.

The reactivity of nonmetal elements generally increases from left to right across the periodic table but decreases from top to bottom down the group.

Answer:

1) Gaining

2) More

3) fewer

4) increases

5) decreases

Explanation:

Answer:  Gamma  Waves

Explanation:

Gamma waves have the highest frequency , shortest wavelength and therefore, carry the greatest amount of energy.

Answer:

The correct option is;

b. It contains at least two colored substances

Explanation:

In chromatography, a mixture is separated into its components, such that in the filter paper, on which the drops of ethanol are then placed on the ink mark, we have different phases of the components of the mixture that have different levels of mobility by capillary action through the filter paper.   Therefore, given that two concentric rings of circles are obtained, we have that each ring is composed of a different component of the mixture and there are therefore, at least two colored substances.

Answer:

Try to make it more detailed "Chemistry is the study of all substances" is an amazing start. Can you give some examples of chemistry? Try to make a small paragraph.

Explanation:

Explanation:

Chemistry, the science that deals with the properties, composition, and structure of substances (defined as elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes.

This is a more detailed answer...

The easiest easy to find about metal is through the periodic table. Most of the ele,mtns are metals and the only exception is hydrogen which is nonmetal as it's in its gaseous state.  

Learn more about the tests you could perform to determine if a substance was a metal or nonmetal.

brainly.com/question/11493240.

Answer:

1. Write the symbol and charge of the cation (metal) first and the anion (nonmetal) second. 2. Transpose only the number of the positive charge to become the subscript of the anion and the number only of the negative charge to become the subscript of the cation

Answer:

A

Explanation:

Apex

Answer:

36.44 g of He

Explanation:

To convert from moles to grams, you simply multiply by the atomic mass. The conversion table looks like the following:

[tex]\frac{9.11 mol}{1}[/tex] * [tex]\frac{4.00 g}{1 mol}[/tex]

The mol units then cancel, and you are left with 36.44 g of Helium.

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 1.8 kg

volume = 0.2 L

We have

[tex]density = \frac{1.8}{0.2} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

knkjhhg

Explanation:

Answer:

D

Explanation:

a precipitate is formed from a solution

Answer:

c

Explanation: i took the test lol

The temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased. Hence option C is correct.

Pressure is defined as the force exerted perpendicularly to an object's surface measured in units of the force's distribution. In comparison to the surrounding pressure, gauge pressure is the pressure. The concept of pressure is crucial to fluid mechanics and is used to characterize a gas's energy in the ideal gas law, among many other physical uses.

The pressure law states that for a constant volume of gas in a sealed container, the temperature of a gas is directly proportional to its pressure. This is easily understood by picturing how the gas particles in the container move more energetically as the temperature rises.

Thus, the temperature outside was colder than the temperature in the gym, so the pressure of the air in the balls decreased. Hence option C is correct.

To learn more about pressure, refer to the link below:

https://brainly.com/question/12971272

#SPJ2

Answer:

Explanation:

The average speed can be found by using the formula

[tex]v = \frac{d}{t} \\ [/tex]

where

d is the distance

t is the time taken

So we have

[tex]a = \frac{24}{2} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

group 8 (group 0)

just take a look at the periodic table

Answer:

for the second one i'd go with reflection

Explanation:

Answer: It changed in identity and properties.

Explanation:

Answer:

C: It changed in identity and properties

Explanation:

Hope this helps! good luck :)

Answer:

Option A

Explanation:

To know the correct answer to the question, let us write an equation illustrating the formation of MgBr₂.

This is illustrated below:

1. Magnesium (Mg) is divalent element hence it will lose 2 electrons to form magnesium ion (Mg²⁺) as shown below

Mg —> Mg²⁺ + 2e¯

2. Bromine (Br) is a univalent element. Two bromine atom will receive the two electrons (i.e each atom receives 1 electron) to form the bromide ion (Br¯) as shown below:

2Br + 2e¯ —> 2Br¯

Combine both equation

Mg + 2Br + 2e¯—> Mg²⁺ + 2e¯ + 2Br¯

Cancel out 2e¯

Mg + 2Br —> Mg²⁺ + 2Br¯

Thus we have

Br—Mg—Br

From the illustration made above, we can see that two bromine atom is receiving 1 electron each from the magnesium atom

Answer:

what problem?

Answer:

Option B is correct = 1,3

Explanation:

Chemical equation:

C₂H₄ + O₂     →    CO₂ + H₂O

Balanced chemical equation:

C₂H₄ + 3O₂     →    2CO₂ + 2H₂O

Step 1:

Left side                      Right side

C = 2                           C = 1

H = 4                           O = 3

O = 2                           H = 2

Step 2:

C₂H₄ + O₂     →    2CO₂ + H₂O

Left side                      Right side

C = 2                           C = 2

H = 4                           O = 5

O = 2                           H = 2

Step 3:

C₂H₄ + O₂     →    2CO₂ + 2H₂O

Left side                      Right side

C = 2                           C = 2

H = 4                           O = 6

O = 2                           H = 4

Step 4:

C₂H₄ + 3O₂     →    2CO₂ + 2H₂O

Left side                      Right side

C = 2                           C = 2

H = 4                           O = 6

O = 6                           H = 4

Answer:

Most likely it decreases the quality of the gold.

Explanation:

Answer:I love to travel however I do erode aluminum so we won't be taking off on undertakings in planes at any point in the near future

Explanation:

It dissolves in hot water because of the water temperature, the milk could not take it to mix in the hot water

Answer:

b

Explanation:

Answer:

2 C7H6O2 + 15 O2 --> 14 CO2 + 6 H2O

Explanation:

Answer:

4.50 L gas of fluorine at STP contain 0.2 moles.

Explanation:

Given data:

Volume of gas = 4.50 L

Number of moles F₂ gas  = ?

Temperature of gas = standard =  273.15 K

Pressure of gas = standard = 1  atm

Explanation:

Formula:

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

Now we will put the values in formula.

1 atm × 4.50 L = n × 0.0821 atm.L/ mol.K  × 273.15 K

4.50 atm.L  = n × 22.43 atm.L/ mol.

n = 4.50 atm.L   / 22.43 atm.L/ mol.

n = 0.2 mol

4.50 L gas of fluorine at STP contain 0.2 moles.

Answer:

the answer is the location of the WORLD is the same as the answer to the answer

Answer:

The independent variable is the height of the ball that bounces.