Which statement about ionic bonds is true?
A. ionic bonds form between two nonmetals sharing electrons
B. ionic bonds are very strong attractions because of electromagnetic attractions between a metal and a nonmetal
C. all ionic compounds end in "-ate" or"-ite"
D. type 1 ionic bonds require Roman numerals

anaphase

or if not

telophase

Answer:

nah

Explanation:

dont wast my points

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:

AL and F

Explanation:

ionic bonds occur through a metal and a non metal

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:

it helps them retain their charge longer

Explanation:

:)

= 18.02 g/mol) im sure its that

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

Answer:d

Explanation:

As the plane  plane flies at a constant speed of 800 km/hr the plane will take 5 hours 25 minutes to  fly   distance of 4200 km.

Speed is defined as the rate of change of distance with time. It has the dimension of distance by time. Thus, the SI unit of speed is given as the combination of the basic unit of distance and the basic unit of Time. Thus, the SI unit of speed is metre per second. In everyday life, kilometre per hour or in countries like US and UK miles per hour are used as the unit of speed.

The SI unit of speed can be derived from the formula of velocity. Basically, velocity is the vector equivalent of speed. Mathematically, velocity is given as the ratio of displacement to the time taken.So, 800 km is traveled in 1 hour so 4200 km will be traveled 4200/800=5.25 which is 5 hours and 25 minutes.

Thus, the plane will take 5 hours 25 minutes to  fly   distance of 4200 km.

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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:

second one... maybe

hope it helps :-)

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

Sound waves is not the form of electromagnetic radiation.

The information regarding electromagnetic radiation is as follows:

Therefore we can conclude that sound waves is not the form of electromagnetic radiation.

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Answer:

C

Explanation:

Just took the test

Answer:

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

Explanation:

ZnCl2 + F2 → ZnF2 + Cl2

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:

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:

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

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: Potassium, Carbon and Oxygen, third option.

Explanation: K= Potassium, C= Carbon, O=Oxygen

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

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:

To reduce acid rain.

Explanation:

Sulfur often removed from fuels before they are burnt because when sulfur is burned it get converted into sulfur dioxide and when sulfur dioxide mix with atmosphere, it can cause acid rain which is very harmful.

So, in order to reduce acid rain, sulfur often removed from fuels before they are burnt.

Hence, the correct answer is "To reduce acid rain."

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:

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:

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.

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