is 1 g of NaCl equal or not equal to avagadro's number

Answer:

2.68

Explanation:

Considering the definition of STP conditions, the mass of 2.15 liters of N₂ gas at STP is 2.68 grams.

The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.

The molar mass of substance is a property defined as its mass per unit quantity of substance. In other words, molar mass is the amount of mass that a substance contains in one mole.

You can apply the following rule of three: if by definition of STP conditions 22.4 L are occupied by 1 mole of N₂, 2.15 L are occupied by how many moles of N₂?

[tex]amount of moles of N_{2} =\frac{2.15 Lx1 mole}{22.4 L}[/tex]

amount of moles of N₂= 0.096 moles

In this case, the molar mass of N₂ is 28 g/mole.

Now, you can apply the following rule of three: If 1 mole of N₂ contains 28 grams, 0.096 moles of N₂ contains how much mass?

[tex]mass of N_{2} =\frac{0.096 molesx28 grams}{1 mole}[/tex]

mass of N₂= 2.68 grams

Finally, the mass of 2.15 liters of N₂ gas at STP is 2.68 grams.

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Answer:

110 degrees C

Explanation:

110 degrees

is your answer

Explanation:

The distribution of electrons of an atom or molecule in an atomic orbital is called electronic configuration.

1. The electronic configuration of Fluorine: [He] 2s²2p⁵.

2. The electronic configuration of Neon: [He]2s²2p⁶

3. The electronic configuration of Sulfur: 1s²2s²2p⁶3s²3p⁴

4.  The electronic configuration of Calcium:[Ar] 4s²

5. The electronic configuration of Iron: [Ar] 3d⁶4s²

Hence, this is the required solution.

Answer:

B. A Brønsted-Lowry acid donates a proton and has a matching conjugate base.

Explanation:

Here's HA is bronsted acid and its conjugate base pair is A-.

Answer:

Explanation:

The actual answer is B. The equation has an acid on one side and a base on the other. The acid donates a proton. Donates means gives up the equivalent of a proton.

Answer:

Explanation:

Let us look closely at the compound, Count the number atoms in the following compound Al(OH)3;

We shall considered the number of each atom present in this compound.

There is one atom of aluminum present

There are three atoms of oxygen present

There are three atoms of hydrogen present

Hence, there are a total of seven atoms of different elements in the compound.

Explanation:

The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun. ... The ozone layer filters out most of the sun's harmful UV radiation and is therefore crucial to life on Earth.

Answer:

the last 2

Explanation:

pls mark me brainliest

Answer:

Explanation:                                                                                        

The warm water provides moisture for hurricanes so that hurricanes are strongest over water, and become weak when they reach land.

Hurricanes are forceful winds in the air which are able to destroy even a land completely. One of the most destructive forces on earth is the hurricane. Although the process of a origin of  hurricane is complex.

They need water that is at least 80 degrees first. Air that is wet is the second component. Finally, for a hurricane to form, there must be convergent winds.

A group of thunderstorms moving across the ocean's surface signal the start of the real process. Similar to how a straw absorbs liquid, when the surface water is heated, the storm absorbs heat energy from the water. The air becomes moistened as a result.

The storm can develop into a hurricane if the wind conditions are right. The fuel is this thermal energy. Hence, option c is correct.

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Answer:

7) 50 8)4

Explanation:

I answered the question what do you want to gave me

Answer:

The mouth begins the process of digestion by mechanically breaking food into smaller pieces.

Explanation:

Digestion is a crucial process that involves the break down of complex food molecules into simpler ones that are assimilable by the body. The process of digestion in humans, for example, is said to begin in the MOUTH where the food enters through.

The mouth via the use of teeth helps the initially break down the food particles using mechanical/physical method. This further helps the break down of the food into tiny particles before they are acted on enzymatically.

Answer:

the volume decreases and the pressure increases.

Answer:

When you first set the water balloon on top of the jar, the air pressure outside the jar and the air pressure inside the jar are the same. ... So now there is less air, less stuff, in the jar

Answer:

Option A.

Explanation:

Balanced equation is:

2SO₂ (g) + O₂(g)  →  2SO₃(g)

First of all, we need to determine the limiting reagent. We convert mass to moles:

544.5 g . 1 mol / 64.06g = 8.5 moles of sulfur dioxide

160 g . 1mol / 32g = 5 moles of oxygen

Ratio is 1:2. 1 mol of oxygen needs 2 moles of sulfur dioxide

5 moles of oxygen may react to (5 . 2) /1 = 10 moles of SO₂

We only have 8.5 moles of SO₂ but we need 10 moles. In conclussion limiting reagent is SO₂.

Ratio is 2:2. 2 moles of SO₂ can prdouce 2 moles of SO₃

Then 8.5 moles of SO₂  must produce 3 moles of SO₃

We convert mass to moles, to determine the theoretical yield (100 % yield reaction) → 8.5 mol . 80.06 g /mol = 680.51 g

Formula for percent yield is: (Produced yield / Theoretical yield) . 100

(382 g / 680.51g) . 100 = 56.1 %

Answer:

TRUE

Explanation:

Answer:

the answer is C There is simply more collisions

The following diagram is an example of a(n) [Hurry!!]

A. Covalent Bond ✓ answer

B. Ionic Bond

C. Metallic Bond

Answer:

This is the diagram of covalent bond

Solution :

We know, In an electrolyte solution, the number of dissolved particles is larger because the solute breaks apart into ions. The greater the number of ions, the larger the impact on colligative properties will be.

So, the compound which will dissociate into more number of electrolyte has more vapour pressure.

Out of all given compound K₃PO₄ have highest number of particles after dissociation.

Hence, D) is the required solution.

Answer:

Energy from the question above: is converted first from gravitational potential energy, to mechanical energy, then finally to chemical energy.

Gravitational potential energy— mechanical energy— chemical energy  

Explanation:

The Lion on the clifs edge, is above the earth's surface, has its energy stored in the form of gravitational potential energy. Gravitational energy = mgh (m = mass, g = gravitational field, h = height). The lion pouncing on the deer now has mechanical energy which comprises the addition of the lion's potential energy and its kinetic energy. After consuming the deer, the energy is in chemical energy which is important to build molecules of glucose.

Answer:

Ethanol (boiling point 78°C) and methanol (boiling point 65°C) are two miscible liquids. There is only a small difference in their boiling points. These two liquids are separated from their mixture by fractional ths distillation.

When vapours of the mixture pass through the fractionating column, repeated liquefaction and vapourisation take place. Subsequently, the vapours of low boiling methanol enter the condenser from the fractionating column, condense to liquid and get collected in the round bottomed flask first. Similarly, ethanol with higher boiling point can be collected later in another round bottomed flask.

Answer:

compounds are substance which can be formed by chemically combining two or more elements.

mixtures are substance that are formed by physically mixing two or more substances

Answer:

the answer is A i learned this in class and i had the exact same question

Answer:

2Al + 3CuSO4 → Al2(SO4)3 + 3Cu

Explanation:

I THINK

Answer:

Explanation:

hope it's helpful

To Find :

Gas’s temperature in Celsius when it has a volume of 25 L, 203 mol, 143.5 atm .

Solution :

We know, by ideal gas equation :

[tex]PV =nRT\\\\T = \dfrac{PV}{nR}[/tex]

Here, R is universal gas constant and [tex]R = 0.082 \ L \ atm \ mol^{-1} \ K^{1}[/tex]

Putting all given values and R in above equation, we get :

[tex]T = \dfrac{PV}{nR}\\\\T = \dfrac{143.5\times 25}{203 \times 0.082}\ K\\\\T = 215.52\ K[/tex]

Hence, this is the required solution.

Answer:

Explanation:

AgNO3 + CaCl2 ⇒ Ca(NO3)2 +AgCl

2AgNO3 + CaCl2 ⇒ Ca(NO3)2 + 2AgCl

Answer:

Refractive index

Heat capacity

Density

Explanation:

Properties that are used to identify materials are called intensive properties. These intensive properties are characteristic of the material and does not depend on the amount of material present.

Thus, if i want to identify whether the three bars are made of the same metal, i can look out for the following properties;

Refractive index

Heat capacity

Density

These properties are intensive properties thus they can be used to identify an unknown substance.

Answer:

It is not equal to Avogadro constant

Explanation:

This is because Avogadro constant refer to the number of molecules or atoms of particles per mile substance and thus is equal to 6.022×10^23 per mile or unit of that substance.