HELP!!! An experiment was conducted to determine if the intermolecular forces in two liquids affects their boiling points. Each liquid was sprayed on a paper towel. Each
paper towel was wiped across a glass table to moisten the surface. The table shows a partial record of the experiment.
Experimental Record
Liquid Intermolecular Forces ?
А
relatively strong
B
relatively weak
What information should be recorded in the last column of the table?
Time taken by the liquids to start boiling
Time taken by the glass surface to dry
Volume of liquid required to moisten the paper towels
Time taken by the paper towels to become completely moist

Answer: Atoms are single neutral particles, and an ion is a positively or negatively charged particle.

Explanation:

Answer:

nah

Explanation:

dont wast my points

Answer:

B. Negative ion with a radius larger than the radius of the atom

Explanation:

When a negative ion is formed, electrons are added to the atom. As electrons are added to the atom, the size of the electron cloud increases accordingly.

As a result of this, a negative ion is always larger than its corresponding atom. Hence, nitrogen ion must be larger than the nitrogen atom based on the facts stated above.

Answer:

C

Explanation:

Just took the test

= 18.02 g/mol) im sure its that

Answer:

D.

Explanation:

I had looked it up on the quiz site

Answer:

A

Explanation:

i thought b but majorities of water companies dont use ocean water and use waters from rivers,and lakes yk

Answer:

3Pb + 2H3PO4 —> 3H2 + Pb3(РO4)2

Explanation:

Pb + H3PO4 —>Н2 + Pb3(РO4)2

In order to balance the equation you must look at the number of elements already in the equation.

We see, on the left side, that:

Pb = 1, H = 3, P = 1, and O = 4

We see, on the right side, that:

Pb = 3, H = 2, P = 2, and O = 8

    Our goal is to balance these numbers so that they are equal. This is because of the law of conservation of matter states that "the amount of matter stays the same, even when matter changes form".

  We cannot change the subscripts, so we add coefficients.

3Pb + 2H3PO4 —> 3H2 + 1Pb3(РO4)2

Now, on the left side:

Pb = 3, H = 6, P = 2, and O = 8

And, on the right side:

Pb = 3, H = 6, P = 2, and O = 8

So, the balanced equation is: 3Pb + 2H3PO4 —> 3H2 + Pb3(РO4)2

*I hope that this helped you. Have a great day & good luck!

Answer:

in nuclear fission, an unstable atom splits into 2 or more smaller pieces that are more stable and releases energy in the process. the fission process also releases extra neutrons which can split additional atoms, resulting in a chain reaction that releases a lot of energy

Answer:

A nucleus is divided into more than one nucleus

Explanation:

Answer:

Faster

number

reactants

increases

Explanation:

The rate of reaction refers to how fast or slow a reaction occurs. The rate of reaction is dependent on factors such as surface area, concentration, temperature, nature of reactants, catalyst etc.

The concentration refers to the amount of reactants present. When the acid is made more concentrated, its amount is increased. This increases the number of collisions between the acid particles and the marble chips ultimately leading to increase in the rate of reaction according to Arrhenius theory.

Answer:

second one... maybe

hope it helps :-)

Answer:

1.53

Explanation:

The acceleration of gravity is 9.8 i believe. To get force divide 15kg by 9.8 and you should get 1.53( rounded to hundredth)

Answer:

The energy content of substances is related to the physical state in which the substance exists. Molecules of gases are always in motion as they possess very high kinetic energy, hence, they exist as gases. Liquid molecules are less energetic than gas molecules, hence they have less flow than gases. Solid molecules on the other are fixed at a place because they possess very low kinetic energy and can only vibrate about their fixed positions.

Explanation:

The three states in which matter exist are solid, liquid and gas.

Solids are made of molecules that are closely packed together and held together by strong intermolecular forces. The particles in a solid possess very low kinetic energy and are not free to move about but can only vibrate and rotate about their fixed positions.

Liquids particles are able to  move about as they possess enough kinetic energy to limit or reduce the strength of the intermolecular forces binding them together. Thus, liquids can flow.

The particles in a gas are relatively far apart and possess kinetic energy more than the particles of a liquid or solid. The intermolecular forces binding particles of gas together are weak due to the very high kinetic energy of yhe gas particlest

Answer:

The term organic chemistry originally meant the chemistry of compounds obtainable from plants and animals

Answer:

Mass of MgO = 36.27 g

Mg produced less number of moles of MgO it will act as limiting reactant while oxygen is present is in excess.

Explanation:

Given data:

Number of moles of Mg = 0.9 mol

Number of moles of O₂ = 1.1 mol

Number of moles of MgO = ?

Which reactant is in excess = ?

Which one is limiting reactant = ?

Solution:

Chemical equation:

2Mg + O₂    →        2MgO

now we will compare the moles of MgO with oxygen and magnesium.

                Mg           :          MgO

                  2            :           2

                  0.9         :         0.9

                O₂            :          MgO

                  1            :           2

                  1.1          :          2/1×1.1 = 2.2

Mg produced less number of moles of MgO it will act as limiting reactant while oxygen is present is in excess.

Mass of MgO:

Mass = number of moles × molar mass

Mass = 0.9 mol × 40.3 g/mol

Mass = 36.27 g

The volume of Hydrogen gas : 24 L

Given

16 L Ammonia(NH₃)

Required

The volume of Hydrogen gas

Solution

Reaction

N₂ + 3H₂ ⇒ 2NH₃

Avogadro's hypothesis:  

In the same T,P and V, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  

V₁/n₁=V₂/n₂

From the equation, mol ratio of H₂ : NH₃ = 3 : 2, so volume of H₂ :

= 3/2 x volume of NH₃

= 3/2 x 16 L

= 24 L

Answer:

The equation for wave speed can be used to calculate the speed of a wave when both wavelength and wave frequency are known. Consider an ocean wave with a wavelength of 3 meters and a frequency of 1 hertz. The speed of the wave is: Speed = 3 m x 1 wave/s = 3 m/s.

SO... take your meters and hezert and do tha same

Explanation:

Plz mark me as brainlyist

Velocity = 3.61 m/s

Given

mass of child = 35 kg

mass of sled = 5 kg

Kinetic energy = 260 J

Required

velocity

Solution

Energy because its motion is expressed as Kinetic energy (KE) which can be formulated as:

KE = 1/2.mv²

mass of object :

= mass child + mass sled

= 35 kg + 5 kg

= 40 kg

Input the value :

v²=KE : 1/2.m

v²= 260 : 1/2.40 kg

v²=13

v=3.61 m/s

Answer:

it helps them retain their charge longer

Explanation:

:)

Mass of water : 0.45 g

Given

1.5 g ethanoic acid

Required

Mass of water

Solution

Reaction

CH₃COOH + NaOH ⇒H₂O + CH₃COONa

mol CH₃COOH(MW=60 g/mol) :

= mass : MW

= 1.5 : 60

= 0.025

mol H₂O from the equation :

= 0.025(mol ratio CH₃COOH : H₂O= 1 : 1)

Mass of water :

= mol x MW water

= 0.025 x 18 g/mol

= 0.45 g

Answer:

1.29L

Explanation:

The equation that represents the change in energy for the expansion of a gas under constant pressure is:

W = PΔV

Where W is work in atmL, P is pressure in atm and ΔV is change in volume in liters

Work in atmL:

131.5J * (1atmL / 101.325J) = 1.298atmL

P in atm:

777 torr * (1atm / 760torr) = 1.022atm

ΔV is:

W / P = 1.298atmL / 1.022atm = 1.27L

As initial volume of the gas is 22.3L = 0.0223L

Final volume = 1.27L + 0.0223L =

Answer:

AL and F

Explanation:

ionic bonds occur through a metal and a non metal

Answer:

The heat needed to warm 225 grams of water from 88.0ºC to its boiling point, 100.0ºC, is 11,296.8 J

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

In this way, between heat and temperature there is a direct proportional relationship (Two quantities are directly proportional when there is a constant, so that when one of the quantities increases, the other also increases; and the same happens when either of the two decreases.) . The constant of proportionality dependent on the substance that constitutes the body and its mass, and is the product of the specific heat and the mass of the body. So, the equation that allows to calculate the calorie exchanges:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature

In this case:

Replacing:

Q= 4.184 [tex]\frac{J}{g*C}[/tex] *225 g* 12 C

Solving:

Q= 11,296.8 J

The heat needed to warm 225 grams of water from 88.0ºC to its boiling point, 100.0ºC, is 11,296.8 J

Answer: I think the answer is, 3.312177825e+24 atoms

Explanation: I had a problem similar to this, Hope this helps!

Answer:

So if you have 5 mole, you have: 5 x (6.022 x 10^23) = 3.011 x 10^24 atoms.

Explanation:

Basically the answer is 44.0095 :)) have a great day!!

Answer:

I think temperature. sorry if the answer is wrong

Thermal energy is the energy associated with temperature. Therefore, the correct option is option D.

What is thermal energy?

By virtue of its temperature, a system in a condition of thermodynamic equilibrium has thermal energy, or internal energy. Unlike the energy of systems which are not in a state of thermodynamic equilibrium, thermal energy cannot be transformed into meaningful work as quickly.

For instance, the energy contained in a flowing fluid or perhaps a moving solid can be used to create mechanical work in a windmill or even a waterwheel, yet a single fluid or solid with the same energy in a thermal equilibrium state cannot produce mechanical work unless it's combined with some other substance at such a different temperature. Thermal energy is the energy associated with temperature.

Therefore, the correct option is option D.

To know more about thermal energy, here:

https://brainly.com/question/30819997

#SPJ7

Answer:

Zinc Chloride + Difluorine -----> Zinc Fluoride + Dichlorine

Explanation:

ZnCl2 + F2 → ZnF2 + Cl2

Answer:

B

Explanation:

Answer:d

Explanation: