Please fill in the 3 blanks will mark brainliest need in 1 min

Answer:

P-waves (primary or compressional waves) are longitudinal or compression waves, able to move through solids, liquids, and gases at speeds ranging between 300-5,000 metres per second. As they travel through rock, they move particles back and forth in the same direction that the wave is moving

Explanation:

Answer: 140.4 grams. One mole would be 58.5 grams, or 23 (the atomic mass of sodium) + 35.5 (the atomic mass of chlorine)

Explanation:

Answer:

3.4 * 58.5 = 198. 9 grams

Answer:

Atomic mass of Hydrogen is 1.00784 u

Atomic mass of Carbon is 12.0107 u

Explanation:

Answer:

Only the valence shell are shown in the Lewis electron dot structures because, the chemical reactivity of an atom of an element is determined by the valence electrons of the atom and not by all the electrons of the atom including the inner electrons.

Explanation:

Lewis electron dot structures are structures that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.

In the Lewis symbol for an atom, the chemical symbol of the element is written, and the valence electrons of the atom are represented as dots surrounding it. Only the electrons in the valence shell are shown using the Lewis electron dot structures.

Lewis structures for molecules show each atom and its position in the structure of the molecule using its chemical symbol. Dots or lines are drawn between atoms to show the electrons that are involved in the chemical bonding between the atoms in the molecule. Valence electrons in each atom that are not involved in bonding known as lone pairs, are represented as pairs of dots, and are placed next to each atom bearing the electron.

Electrons that are not in the valence level are not shown in the Lewis electron dot structures . This is because, the chemical reactivity of an atom of an element is determined by the valence electrons of the atom and not all the electrons of the atom including the inner electrons.

Answer:

lol we appreciate you!!

Explanation:

thank you

Answer:

it's O2 since the oxygen has 6 valence electrons and it can make 2 covalent bonds

Answer: C is the answer

The T in the equation G = H - TS is the temperature in kelvins at which the reaction is happening. The correct option is A.

Temperature is the measurement of the coldness or hotness of a body. The SI unit of the temperature is kelvin and Celsius. The high-temperature regard hotness and the low temperature means a cold area.

G = H – TS is the equation to calculate Gibbs free energy.

Where G = Gibbs free energy

H = enthalpy

T = temperature

S = entropy

Gibbs free energy is the total amount of energy that is taken to do the work in a closed system. The entropy is the total amount of energy that is not useful for work. The temperature is the variable in this equation.

Thus, the correct option is A. The temperature in kelvins at which the reaction is happening.

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Answer:

3 mol MgO : 2 mol Fe

Explanation:

Answer: 2.00 atm

Explanation:

P1/T1 = P2/T2

1.3317/273 = P2/410

P2 = 2.00 atm

Answer:

  False

Explanation:

An element is named according to the number of protons in the nucleus. If it gains or loses a neutron, it becomes a different isotope of the same element.

The given statement is false.

Answer:

Explanation:

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Answer:

hi again

I : Television. Satellites send television signals directly to homes

II : gravity

Answer:

1) I would say television and streaming channels. 2) gravity

Explanation:

go here is the answer key

http://msschmidly.weebly.com/uploads/2/6/2/0/26201624/gases_review___calculations.pdf

According to ideal gas equation, there are 271472.7 moles of gas present in a gas trapped within a 37.0 L vessel at 80.0°C at a pressure of 2.50 atm.

Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.

It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.

It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass  in grams present in one mole  of atoms is its atomic mass.

Substitution of values in ideal gas equation gives,n= 2.5×37/8.314×353=271472.7 moles.

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Answer:

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Answer:

helium formula He

Ammonia formula NH3

methane formula CH₄

chlorine formula  Cl-

Explanation:

Answer:

Clastic sedimentary rocks are formed from rock fragments or clasts; chemical sedimentary rocks precipitate from fluids, and biochemical sedimentary rocks form as precipitation from living organisms.

Sedimentary rock is classified into two groups based on how they form. They are clastic and chemical. Clastic sedimentary rock is formed as bits of weathered rock become cemented together. Because all kinds of rock are subject to weathering many different minerals can make up this group of rocks.

Answer:

options?

Explanation:

Answer:

Sal, cobre, aluminio, anillo de oro puro Oxígeno ------ suspensión.

Cerveza, carbonato de sodio, oxígeno, carbono y helio ------ solución.

Explicación:

Sal, Cobre, Aluminio, Anillo de oro puro Oxígeno son los ejemplos de suspensión porque permanecen suspendidos en la solución mientras que por otro lado, Cerveza, Carbonato de sodio, Oxígeno, Carbono y helio son los ejemplos de solución porque formaron una mezcla homogénea en la que ambas soluciones no se pueden diferenciar entre sí pero en suspensión sí se pueden diferenciar.

Answer:

TYPES OF HEATING: There are three types of heat transfer: conduction, convection, and radiation.

OCEAN ANSWER: Ocean currents are driven by a range of sources: the wind, tides, changes in water density, and the rotation of the Earth. The topography of the ocean floor and the shoreline modifies those motions, causing currents to speed up, slow down, or change direction.

Explanation:

the answer is basicly the person who answered above me

Explanation:

Answer:

Just add and multiply after divding and lol

Explanation: add then add

Answer:

B- Candle wax melts when it is heated.

Answer:

1

Explanation:

calcium react with sulphuric acid to produce carbon dioxide which turns lime water milky

Answer:

Mercury  

Mars  

Venus  

Earth  

Neptune  

Uranus  

Saturn  

Jupiter

Explanation:

b.temperature

in a calorimetric determination, either 1. an exothermic process occurs and heat, q, is negative, indicating that thermal energy is transferred from the system to its surroundings, or 2. an endothermic process occurs and heat, q, is positive, indicating that thermal energy is transferred from the surroundings to the system.

Answer:

C: 1 mol F2/38 g F2

Explanation:

The reaction equation is;

N2 + 3F2 = 2NF3

Now, to know how many grams, of N2 is needed to completely react with 105 g F2 and since the molar mass of N2 is 28.02 g/mol, Molar mass of F2 is 38 g/mol, number of moles attached to N2 and F2 in the reaction are 1 and 3 moles respectively, then we will have;

105 g F2 × 1 mol F2/38 g F2 × 1 mol N2/3 mol F2 × 28.02 g N2/1 mol N2

Option C is Thus correct

Answer:

The molarity of a solution is "25 M".

Explanation:

The given values are:

Moles of solute,

= 12.5 g

Volume of solution,

= 500 mL

i.e.,

= 0.5 L

Now,

The molarity will be:

=  [tex]\frac{Number \ of \ moles \ of \ solute}{Volume \ of \ solution}[/tex]

On substituting the values, we get

=  [tex]\frac{12.5}{0.5}[/tex]

=  [tex]25 \ M[/tex]

Answer:

26.83333

Explanation:

Answer:

1. An incline plane is a flat plan put at a positive angle with the ground (assuming the ground is horizontal)

2. Work equals force times distance. And since the hypotenuse of a triangle (the ramp) is longer than the opposite side (equivalent to lifting an object vertically), the increased distance decreases the force needed to do a certain amount of work.

3. We usually use incline planes to elevate large objects.  Since it takes less force to move certain things up inclines rather than picking them up, it is much simpler to move an object up an incline.

4. You could decrease the force by making the plane's angle with the ground smaller.

5. I don't know; I wasn't in your class :)

6. Ramps, wheelchair entrances, inclined rooves etc.

7. No. A plane has to be relatively flat; therefore stairs are neither a plane, nor an inclined plane.

Answer:

Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another. This exchange results in a more stable, noble gas electronic configuration for both atoms involved. An ionic bond is based on attractive electrostatic forces between two ions of opposite charge.

Explanation: