if i want to make 14 moles of potassium chloride, how many grams of potassium do i need? Show all work. Make sure to include unit and substance

Answer:

Bonds between atoms are broken/ or new bonds are formed

Explanation:

Due to chemical changes.

Freeze-Thaw Weathering

This action can widen the cracks in the rock, and when the temperature rises above freezing, the ice thaws, allowing the water to seep further into the cracks. As this process of freezing and thawing happens repeatedly, the rock begins to weaken and eventually breaks apart into angular fragments.

Answer:

Physical weathering is caused by the effects of changing temperature on rocks, causing the rock to break apart. The process is sometimes assisted by water. ... Freeze-thaw occurs when water continually seeps into cracks, freezes and expands, eventually breaking the rock apart.

Explanation:

hope this helps

Sulfur dioxide is used as a food preservative, disinfectant, etc.

Answer:

0.047 moles

Explanation:

From the question,

Applying

PV = nRT............. Equation 1

Where P = Pressure of CH₄ gas, V = Volume of CH₄ gas, n = number of moles of CH₄ gas, R = Molar gas constant.

make n the subject of the equation

n = PV/RT............. Equation 2

Given: P = 660 torr = (660×0.00131579) atm = 0.868 atm, V = 1300 mL = (1300/1000) L = 1.3 L, T = 20 °C = (20+273) K = 293 K

Constant: R = 0.082 atm.dm³/K.mol

Substitute these values into equation 2

n = (0.868×1.3)/(0.082×293)

n = 1.1284/24.026

n = 0.047 mole

Answer:

3.75 moles

Explanation:

The chemical equation is 2CH₃OH + 3O₂ -> 2CO₂ + 4H₂O

2 moles of CH₃OH are burned by 3 moles of O₂

For 2.5 moles of CH₃OH are burned by x moles of O₂

Let's solve for x :

2*x=2.5*3 => 2*x=7.5 => x=3.75 moles of O₂ are needed to burn 2.5 moles of CH₃OH

Answer:

1.melting

2.freezing

3.

Explanation:

That's all I got sorry

Answer:

Look at the picture

Explanation:

Answer:

Carbon Dioxide

Explanation:

Carbon dioxide gets turned into oxygen

Answer:

670.45 K

Explanation:

Given that,

Initial volume, V₁ = 1.22 L

Initial temperature, T₁ = 286 K

Final volume, V₂ =  2.86 L

We need to find the new temperature of the gas. The relation between the volume and the temperature is given by :

[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}\\\\T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{2.86\times 286}{1.22}\\\\T_2=670.45\ K[/tex]

So, the new temperature of the gas is equal to 670.45 K.

Answer:

149.79

Explanation:

Formula

Joules = m * c * delta (t)

Givens

J = 28242

m = ?

c = 4.19

Δt = 63 - 18 = 45

Solution

28242 = m * 4.19 * 45

28242 = m * 188.55

m = 28242 / 188.55

m = 149.79

Answer:

Plants need to regulate the level of water in their bodies in order to be able to carry out several essential processes like photosynthesis and respiration as well as maintain cell turgidity, without which the plant will not survive in its given environment.

Explanation:

The ability of plants to regulate the amount of water in their bodies is known as water balance.

Plants need water in order to carry out many of their essential life functions such as photosynthesis, respiration, nutrition,etc. They also need water in order to order to maintain cell turgidity which serves to support the plant and keep them upright in order for them to absorb sunlight for photosynthesis. Water is also needed in cell division and growth in plants. Without water the plant would not survive, as it would not be able to carry out these essential life processes.

Water balance in plants is maintained through the process of transportation. Transpiration is the process by which water leaves the plant by evaporation through its leaves. When there is an excess of water absorbed by the plant through its root hairs, the rate of transpiration in plant increases. However, when there is little quantity of water available for the plant to use for its cellular processes, the rate of transportation reduces. The opening and closing of the stomata in the leaves of plants regulates the process of transportation.

Answer:  The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.

Explanation:

The volume (in litres) of 2.75 g of fluorine gas at 35 °C and 4.55 atm is 0.402 L

Mole = mass / molar mass

Mole of F₂ = 2.75 / 38

Mole of F₂ = 0.0724 mole

Using the ideal gas equation, the volume of the gas can be obtained as follow:

PV = nRT

Divide both side by P

V = nRT / P

V = ( 0.0724 × 0.0821 × 308) / 4.55

V = 0.402 L

Learn more about ideal gas equation:

https://brainly.com/question/4147359

Answer:

Because the sun is low on the horizon, sunlight passes through more air at sunset and sunrise than during the day, when the sun is higher in the sky. More atmosphere means more molecules to scatter the violet and blue light away from your eyes.

Answer:

Explanation:

The healthiest foods are low in nutrients such as sodium and fats, and high in nutrients such as proteins and fiber.

Answer:

Show us the arrows, how are we suppose to answer?

Explanation:

Answer is in a ph[tex]^{}[/tex]oto. I can't attach it he[tex]^{}[/tex]re, but I uploaded it to a fi[tex]^{}[/tex]le hosting. link below! Good Luck!

bit.[tex]^{}[/tex]ly/3a8Nt8n

Answer:

The third line

Explanation:

The first one us wrong because they're not all found inside,electron is outside.

The second one is wrong as I explained previously.

Lastly the fourth line is wrong because protons are found in the nucleus.

Answer:

Explanation:

2NH3(g)(→ N2(g)(+(3H2(g)

Eventually, these two reactions occur at the same  rate. When this happens,

the concentrations of nitrogen, hydrogen, and ammonia become constant, and the

system is said to be “at equilibrium”. Typically,

we represent chemical equilibrium

using a double-headed reaction arrow:

Answer:

D and R are in the same period

Explanation:

remember groups are vertical and periods are horizontal!

Answer:

Explanation:

3Pb(ii)(NO3)2 + 2Fe(iii) ( C2H3O2 )3   ===> 3Pb( C2H3O2)2 + 2Fe(NO3)3

I know you have likely been given this as a homework assignment, but in real life I doubt you would be able to see any reaction taking place. The products are likely both soluble and both ionize, so I don't think you will get any kind of reaction taking place.

The equation however is balanced.

Answer:

I'm pretty sure that it's lithium because it gives up one of their 3 electrons, so li

Answer:

what

Explanation:

ummm I... . .. .. . . . . . . . . .

Answer:

the answer to this is b thanks for

Answer:

True

A Gamma-Ray emission results in the release of energy without any apparent change in mass or nuclear charges

Answer:

Si.

Explicación:

Sí, la aplicación de medidas de seguridad depende de las características de su entorno porque el entorno nos brinda para elegir las medidas de seguridad. Existen diferentes instrumentos utilizados para la seguridad de diferentes entornos. Algunas medidas de seguridad se aplican en un entorno mientras que el otro se aplica a otro entorno. Por ejemplo, el vallado es una medida de seguridad que se puede aplicar en el terreno pero no en el agua o cualquier zona fangosa, por lo que podemos decir que las características físicas deciden qué medida de seguridad se debe instalar en el entorno.