Create lattice for CaCl2

The relationship between the enthalpy (ΔH) and entropy (ΔS) of a

reaction that is spontaneous at higher temperatures but not at lower

temperatures is +ΔH, - Δs.

The relationship between enthalpy (ΔH) and entropy (ΔS) is given by Gibs free energy.

ΔG = ΔH - TΔs

When ΔH < 0 and Δs < 0, ΔG = -ve  (-ΔH, - Δs) (for lower temperature)

Also, when ΔH < 0 and  Δs = +, ΔG = -ve (-ΔH, +Δs)  (for all temperature)

When ΔH > 0 and Δs < 0, ΔG = -ve  (+ΔH, - Δs) (for higher temperature)

Thus, the relationship between the enthalpy (ΔH) and entropy (ΔS) of a

reaction that is spontaneous at higher temperatures but not at lower

temperatures is +ΔH, - Δs.

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Apply Boyles law

Remember

If Volume is four times increased pressure is 4 times decreased

Answer:

lithium lithium (or 2lithium) + oxygen ->

Explanation:

Your welcome

Answer:

super saturation takes place.

Answer:

= 0.4 M

Explanation:

data:

moles = 0.060 moles

volume = 1500 ml

             = 1500 / 1000

              = 1.5 dm^3

solution;

      molarity = [tex]\frac{no. of moles}{volume in dm^3}[/tex]

                    = 0.060 / 1.5

         molarity  = 0.4 M

A Plate Boundaries and Movement Lab Report is a report that shows the records of all the data relating to the movement of Plate Boundaries and their movements.

A tectonic plate is also described or referred to as a Lithosperic Plate. In Geography, it is described as a slab of rock that is not shaped regularly.

In most cases, it comprises continental and oceanic lithosphere.

Plate Boundaries and their movement are largely linked to volcanic activities and earthquakes. This means that they can be used to predict when any of the above-mentioned events may happen.

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Answer:

Molar Mass (Cr₄(PO₄)₃): 492.894 g/mol

Explanation:

First, collect the individual molar masses of each element. These values are found on the periodic table under each respective element.

Chromium (Cr): 51.996 g/mol

Phosphorus (P): 30.974 g/mol

Oxygen (O): 15.999 g/mol

The quantity of each element is determined by the subscript next to it. If their is a subscript directly to the right of a set of parentheses, multiply each element within the parentheses by the subscript.

Chromium (Cr): 4

Phosphorus (P): 1 x 3 = 3

Oxygen (O): 4 x 3 = 12

Finally, the total molar mass of the compound is the collective molar masses of each element times the quantity of each element.

Molar Mass (Cr₄(PO₄)₃): 4(51.996 g/mol) + 3(30.974 g/mol) + 12(15.999 g/mol)

Molar Mass (Cr₄(PO₄)₃): 492.894 g/mol

Answer:

You can get to the answer in two steps:

calculate: 3.40⋅1022 atoms = x mol ?

using Avogadro's constant.

calculate: x mol = ? grams,

using the atomic mass of Helium.

Step 1

Avogadro's constant says that 1 mole of any atom contains 6.022⋅1023 atoms. In this case you have 3.40⋅1022 atoms:

3.40⋅1022atoms6.022⋅1023atomsmol = 5.65⋅10−2mol

Step 2

The atomic mass of helium (He) will give you the weight of one mole of this molecule: 1 mol = 4.00 gram:

4.00gmol⋅5.65⋅10−2mol = 0.226g

So the 3.40⋅1022 helium atoms weigh 0.226 gram.

Answer:

A + B → C + D + heat

Explanation:

A. A+B+heat⇒C+D

In an endothermic reaction, the system requires energy/heat, the enthalpy change is positive.

Answer:

alkenes and cyclic compounds

Answer:

Face value. Corporate bonds normally have a par value of $1,000, but this amount can be much greater for government bonds.

Interest. ...

Coupon or interest rate. ...

Maturity. ...

Issuers. ...

Rating agencies. ...

Tools and tips.

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Cable wires are usually made of of thermoplastics because, current passing through the wire has heating effects as well, due to collision of electrons in the conducting wire. so to avoid the melting of normal wire which can break the circuit, Thermoplastics are used, that doesn't have much effect of heat on them.

Answer:

of Equilibrium Constant

Consider the chemical system:

2 NO(g)

N₂(g) + O₂ (g)

K = 2.1 x 1030

How do the equilibrium concentrations of the reactant compare to the equilibrium concentration of the products?

Select one:

O a. They are much lower

O b. They are much higher

O c.

They are about the same order of magnitude

O d. They have to be exactly equal

e.

You can't tell from the information

Explanation:

of Equilibrium Constant

Consider the chemical system:

2 NO(g)

N₂(g) + O₂ (g)

K = 2.1 x 1030

How do the equilibrium concentrations of the reactant compare to the equilibrium concentration of the products?

Select one:

O a. They are much lower

O b. They are much higher

O c.

They are about the same order of magnitude

O d. They have to be exactly equal

e.

You can't tell from the information

Population density is the number of specific organisms living in a particular area. The tectonic plate movements in the Ring of Fire area can cause volcanic eruptions and earthquakes.

Tectonic plates are the parts of the crust and the mantle of the earth layer that is also called the lithosphere plate. They are not stationary and have slight movements on the mantle which comprises the hot lava.

The movement of these tectonic plates in the area of the Ring of fire causes the eruption of the lava and disrupts the crust causing an earthquake. This consequence affects the life habiting them.

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Answer:

im pretty sure because the plates move which causes these natural disasters

Explanation:

Answer:

100 degree is the answer of given statement

Answer:

More people means more demand for oil, gas, coal and other fuels mined or drilled from below the Earth's surface that, when burned, spew enough carbon dioxide (CO2) into the atmosphere to trap warm air inside like a greenhouse

Explanation:

hope this helps

pls mark brainliest

Mass of H2CO3 = 1.05g

Givens: NaHCO3 = 3.24

Na2CO3 = 2.19

Mass of H2CO3 = mass of NaHCO3 - mass of Na2CO3

Mass of H2CO3 = 3.24g - 2.19g

Mass of H2CO3 = 1.05g

The number of protons and the number of neutrons combine to determine the mass number of an element. Mass number = proton + neutron. If you want to calculate the number of neutrons an atom has, you can simply subtract the number of protons or atomic numbers from the mass number.

Divide the mass of a substance in grams by the molecular weight. This will give you the number of moles of the substance in a particular mass. For 12 g of water, (25 g) / (18.015 g / mol) = 0.666 mol.

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The significant figures in the number 0.00521 is : 3 Significant figures.

Significant figure can be defined as numbers within the number system that has value or gives value to a number list.

Significant figures are numbers that has a measure of value assigned to them as a reason of where they are placed.

In conclusion, the number above contains only three significant figures.

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The name of the carboxylic acid would be 2-methyl-3-ethylheptanoic acid.

Carboxylic acids are named based on the longest carbon chain and the counting starts from the carboxylic acid's functional group.

Thus, in this case, the compound would be a heptanoic acid because the longest chain towards the functional group has 7 carbons.

This means 2 branches exist in the compound. The first one has a single carbon while the second one has 2 carbon atoms. This means they are methyl and ethyl groups respectively.

The branches are located on the second and third carbon on the main chain. Thus the compound's name is 2-methyl-3-ethylheptanoic Acid.

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Answer:

AZ₂

Explanation:

The formed compound will not contain Q because mass percentages, %A and %B, form 100% of the compound.

Steps

Solving

Answer:

Fluorine 1s2 2s2 2p5

Explanation:

it is likely to receive 1 electron

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In the periodic table, this element belongs to the 17th group. As a result, the element has a tendency to gain one electron during bond formation in order to achieve octet.

electronic configuration is:

[tex]1s^22s^22p^5[/tex]

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Individual marble:

Answer:

Individual Marble

Use the formula 4/3_?_ R^3, to solve for the volume. Here, R is the radius, or half of D. ^3 means the radius is cubed.

Explanation:

The name of the compound is 2-methyl-3-ethylheptanoic acid.

Looking at the structure, the longest carbon chain is 7. Meaning that the compound is a heptanoic acid.

There are 2 branches. The first one has a single carbon (methyl) while the second one has 2 carbons (ethyl).

The methyl is located on the second carbon (2-methyl) while the ethyl is located on the third carbon (3-ethyl) on the main chain.

Thus, the name of the compound would be 2-methyl-3-ethylheptanoic acid.

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Answer:its c 3-ehtyl

Explanation:

The answer to the correct number of significant figures is 0.171.

The numbers 1 to 9 will always be significant figures. Leading zeros of a number are not significant figures. Zeros to the right of a number are significant figures.

In this case we have:

[tex]0.97584/5.68 = 0.171[/tex]

So you only need the three numbers after the dot.

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Answer:

well it is because of mainly what we call reaction the petrol are highly reactive with the flames