two major diferences of terestial planets??

Answer:

A. physical change

b. physical change

c. chemical change

d. chemical change

The  temperature of the water will reduce by 2.4 °C from 24.9 °C 22.5 °C.

The temperature change when 3.21 g of NH₄NO₃ is dissolved in 100 g of water under the same conditions is determined using the formula:

In example 5.6, when 3.21 g of NH₄NO₃ is dissolved in 50 g of water at 24.9°C in a calorimeter, the temperature decreases to 20.3°C.

The quantity of heat absorbed, q = -mcΔT

m = 50 + 3.21 = 53.21g

Assuming the specific heat of the solution is the same as that of water;

c = 4.18 J/g/K

ΔT = 20.3 - 24.9 = -4.6 K

q = -(53.21 * 4.18 * -4.6)

q = 1023.12 J

Since, the same mass of NH₄NO₃ is dissolved, the quantity of heat absorbed is the same.

ΔT = - q/mc

m = 100 + 3.21 = 103.21 g

ΔT = - 1023.12 J/103.21 * 4.18

ΔT = -2.4 °C

Therefore, the temperature of the water will reduce by 2.4 °C.

Learn more about specific heat of water at: https://brainly.com/question/26846829

#SPJ1

Density = mass/volume

 ρ = \(m/v\)

 Density = 10/3.70

 Density of aluminum 2.702 g/cm3.

A thin, silvery-white metal, aluminum is. It is soft and pliable. Aluminum is used in a wide variety of products, including cans, foil, kitchenware, window frames, beer kegs, and parts for airplanes.

In the Earth's crust, aluminum is the most prevalent metal and the third most abundant element. On Earth, it is typically found in substances and minerals such feldspar, beryl, cryolite, and turquoise. But mining minerals for aluminum is quite expensive.

Rust doesn't occur in aluminum. It's important to remember, though, that aluminum is a highly reactive metal in its purest form. Although pure aluminum technically dissolves when it comes into contact with water, its reactivity may also be its greatest strength.

To learn more about aluminum from the given link:

brainly.com/question/25869623

#SPJ4

90 ML is the final volume when 15. 00 ml of a 4. 50 m HCL solution is diluted to a final concentration of 0. 750 m.

M1V1=M2V2

15*4.5=0.75*V2

V2= 90 ML

Muriatic acid, often known as hydrochloric acid, is a powerful, colorless mineral acid with various industrial applications. When it combines with an organic base, it produces a hydrochloride salt. Gastric acid, a substance naturally created in the human stomach to aid in food digestion, is primarily made up of hydrochloric acid, an aqueous solution of hydrogen chloride gas. Consuming strong hydrochloric acid can also result in serious corrosive damage to the mouth, throat, esophagus, and stomach. These injuries may lead to bleeding, perforation, scarring, or the development of strictures. HF is a liquid because of hydrogen bonding, but HCl is a gas because of the absence of hydrogen bonding.

Learn more about HCL here:

https://brainly.com/question/13016495

#SPJ4

Answer:

Compounds change properties when the number of atoms changes

The statement best explains the compound H₂O is not toxic to drink, but H₂O₂ is toxic to drink is compounds change properties when the number of atoms changes. The correct option is C.

H₂O is the chemical formula of water. It is made up of joining hydrogen and oxygen. Water is an essential compound of life. It is present in three forms on the earth.

H₂O₂ is the chemical formula of hydrogen peroxide. It is more viscous than water, and it is used as an antiseptic and used in cleaning cut areas and wounds.

When the atoms are more added to a compound. It changes its property because it becomes a new and different compound. Water and hydrogen peroxide are different compounds.

Thus, the correct option is C. compounds change properties when the number of atoms changes.

To learn more about H₂O and H₂O₂, refer to the link:

https://brainly.com/question/25808871

#SPJ2

Answer:

chlorine is diatomic so you wouldnt have to say "di" because it is a commonly known thing in chemistry.

Explanation:

pls mark brainliest tyyy ❤

Ions present in the solution of the Na₃PO₄ is Na⁺ and PO₄³⁻.

The Sodium is the metal from the first column group and it has ability to donate ion and form the 1+ charge. The Phosphate has the ability to form the negative ion as the 3- charge. This is the reason that there are the 3 sodium ion for the 1 phosphate ion when Na₃PO₄ molecule is dissolved in the water. The ion are :

Na₃PO₄  --->  3Na⁺  +  PO₄³⁻

The ionic compound name is the sodium phosphate. The ionic compound is formed when the bond is formed by the sharing of the electrons.

To learn more about ions here

https://brainly.com/question/21790979

#SPJ4

Mass (often measured in grams) & volume are the two characteristics in this module through which we will create unit components to do statistical approach using different chemicals .

Chemical substances come in three different forms: elements, compounds, and mixtures. Elements are basically chemicals that don't contain any other substances. In this sense, elements are the fundamental constituents of chemical composition.

The component can be an isotope or a combination if it is pure. If a substance can be divided into its component elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or even a heterogeneous mixture. If the composition remains the same throughout, the combination is homogeneous.

To know more about chemical substances visit:

https://brainly.com/question/29637836

#SPJ4

The incorrect statement concerning metals is: (ii) the bonding in most metallic solids is mono-directional. The bonding in metallic solids is not mono-directional but rather delocalized.

Metallic bonding occurs due to the sharing of valence electrons among a lattice of metal atoms.

These valence electrons are not restricted to specific bonds but form a "sea" of electrons that can move freely throughout the lattice. This delocalized electron model explains the high electrical conductivity of metals, as the mobile electrons can easily carry electric current.

Additionally, since the electrons are not confined to specific directions, metals can conduct electric current uniformly in all directions within the solid state. This property makes metals excellent conductors of electricity.

To know more about the metallic solids refer here :

https://brainly.com/question/29334082#

#SPJ11

Answer:

Figure 1 provides the rawest and most accurate data.

Explanation:

Answer:

Figure 1 provides the rawest and most accurate data.

Explanation:

Guy above me is right.

Answer:

Molarity = 0.08 M

Explanation:

Given data:

Mass of copper sulfate = 3.8 g

Volume of water = 250 cm³  (250/1000 = 0.25 L)

Concentration of solution = ?

Solution:

Number of moles of copper sulfate:

Number of moles = mass/molar mass

Number of moles = 3.8 g/ 159.6 g/mol

Number of moles = 0.02 mol

Concentration:

Molarity = Number of moles / volume in L

By putting values,

Molarity = 0.02 mol / 0.25 L

Molarity = 0.08 mol/L

Molarity = 0.08 M

The completed sentence contains as follows

In the first step of the Krebs cycle, pyruvate dehydrogenase condenses with oxalo-cyclate , a 4 carbon compound. It forms citrate with removal of CoA. Citrate which thus formed has 3 carboxylic acid group and hence this cycle is called TCA cycle or Tricarboxylic acid cycle.

In reaction 2, this citrate thus formed undergoes isomerization to form isocitrate. The enzyme used in the reaction is called aconitase because this isomerization happens with cis-aconitate as the intermediate.

Further, in the reaction 3, CO₂ is eliminated to form \alpha -ketoglutarate which is a 5 carbon containing carboxylic acid. Here, oxidation occurs by electron transfer to NAD⁺ which is converted from NADH.

Learn more about metabolic pathway from the link given below.

https://brainly.com/question/24535175

#SPJ4

The heat of reaction (ΔH) for the given reaction is 180.4 kJ/mol. To calculate the heat of reaction (ΔH) for the given reaction:

CCl₄(g) + H₂O(g) -> CHCl₃(g) + HCl(g)

You would need the standard enthalpies of formation for each compound involved in the reaction. The standard enthalpy of formation (ΔHf) is the enthalpy change when one mole of a compound is formed from its elements in their standard states.

Here are the standard enthalpies of formation for the compounds involved:

ΔHf[CCl₄(g)] = -135.5 kJ/mol

ΔHf[H₂O(g)] = -241.8 kJ/mol

ΔHf[CHCl₃(g)] = -104.7 kJ/mol

ΔHf[HCl(g)] = -92.3 kJ/mol

To calculate ΔH for the reaction, you need to sum up the enthalpies of formation of the products and subtract the sum of the enthalpies of formation of the reactants:

ΔH = ΣΔHf(products) - ΣΔHf(reactants)

ΔH = [ΔHf[CHCl₃(g)] + ΔHf[HCl(g)]] - [ΔHf[CCl₄(g)] + ΔHf[H₂O(g)]]

ΔH = [(-104.7 kJ/mol) + (-92.3 kJ/mol)] - [(-135.5 kJ/mol) + (-241.8 kJ/mol)]

ΔH = -196.9 kJ/mol - (-377.3 kJ/mol)

ΔH = 180.4 kJ/mol

Therefore, the heat of reaction (ΔH) for the given reaction is 180.4 kJ/mol.

To know more about enthalpy:

https://brainly.com/question/29145818

#SPJ4

The percent composition of oxygen in tripotassium phosphate is 30.15%.

Percent composition  is defined as a convenient way to record concentration of solution.It is a expression which relates mass of an element  to compound as,mass of element/mass of compound ×100.

In the given compound of tripotassium phosphate the molar mass is 212.27 g/mole, while that of oxygen is 16×4=64 g/mole.Thus, the percent composition of oxygen in tripotassium phosphate is 64/212.27×100=30.15%.

Thus, the percent composition of oxygen in tripotassium phosphate is 30.15%.

Learn more about percent composition,here:

https://brainly.com/question/20527749

#SPJ1

Answer:

Cholesterol is a waxy substance found in your blood. Your body needs cholesterol to build healthy cells, but high levels of cholesterol can increase your risk of heart disease. With high cholesterol, you can develop fatty deposits in your blood vessels.

Explanation:

Answer:

Cholesterol is a waxy substance found in your blood. It can affect our bodies in many ways. If you have high levels of cholesterol it can increase your risk of heart disease. Your body needs it to help build healthy cells.

Explanation:

Hope this helps:)...if not then sorry for wasting your time and may God bless you:)

According to the question of isotope, the solution with question is given below:

Isotopes are atoms of the same element that have different numbers of neutrons. They have the same atomic number and chemical properties, but because of their different mass numbers, they behave differently in processes such as chemical reactions and nuclear reactions. Isotopes are used for many purposes in science and technology, such as radiometric dating, nuclear medicine, and nuclear energy production. Different isotopes of the same element often have varying levels of radioactive decay and may be employed to trace elements in biological systems. Some isotopes can even be used to create weapons of mass destruction.

1. A sample contains 0.80 moles of Carbon-14, 0.20 moles of Carbon-12. What is the isotopic abundance of Carbon-14?

-> Isotopic abundance of Carbon-14 = 0.80 / (0.80 + 0.20) = 0.80 or 80%

To learn more about isotope

https://brainly.com/question/14220416

#SPJ1

Answer:

Copper encompasses a relatively low softening point, around 1075 degrees C. You'll dissolve little sums with a blowtorch. To soften sufficient for casting you'll require a heater of a few kind. This require be small more than some of tin cans.

The intermediate formed in aldol condensation is Carbanion.

When a carbonyl compound containing α- hydrogen is treated with a base, carbanion is formed in first step.

\(CH_{3} CHO\)   →    \(CH_{2} ^{-} -CHO\)  

What is aldol condensation reaction?

An organic process known as aldol condensation occurs when an enolate ion combines with a carbonyl compound to produce either a hydroxy ketone or a hydroxy aldehyde, which is then dehydrated to produce a conjugated enone.

What are the steps involved in aldol condensation?

Step 1: Removing the base's -hydrogen

Step 2: The first step produces a carbanion, which interacts with the carbonyl group in the second aldehyde molecule in a nucleophilic addition reaction (in this case ethanal). The condensation product is created as a result of the second phase.

Step 3: The reaction with water will cause the alkoxide ion to protonate.

Step 4: By heating the aldol molecule in the basic solution, the result can be dehydrated to create an unsaturated aldehyde compound.

Therefore, the intermediate formed in the first step is Carbanion.

To learn more about aldol condensation reaction from the given link

https://brainly.com/question/14260386

#SPJ4

The products of an exothermic reaction likely to be warmer than the reactants because in this reaction energy produced is released as heat.

An exothermic reaction is a reaction in which energy is released in the form of light or heat. So, in an exothermic reaction, energy is transferred into the surroundings rather than taking energy from the surroundings as in the case of endothermic reaction.

We can also say that the exothermic reactions are the ones that actually release heat after the chemical reactions. For example matching a light using a matchstick is one example of this type of reaction where the release of energy  is in the form of both heat and light.

So, in these kinds of reaction the products of these reactions are more likely to me warmer than the reactants.

To know more about exothermic reaction

https://brainly.com/question/17022982

#SPJ4

Answer:

it becomes poisonous to the body

The chemist has added 501 millimoles of nickel(II) chloride (NiCl2) to the reaction flask.

To calculate the millimoles of NiCl2, we need to convert the volume of the solution to liters and then multiply it by the concentration of NiCl2.

Given that the volume of the solution is 300.0 mL, we convert it to liters by dividing by 1000, resulting in 0.300 liters. The concentration of the NiCl2 solution is 1.67 mol/L.

To calculate the millimoles of NiCl2, we multiply the volume (in liters) by the concentration (in mol/L) and then convert the result to millimoles by multiplying by 1000. Therefore, 0.300 L * 1.67 mol/L * 1000 = 501 millimoles of NiCl2.

Hence, the chemist has added 501 millimoles of nickel(II) chloride to the reaction flask.

To learn more about reaction, click here:

brainly.com/question/25769000

#SPJ11

A Chemist Adds 300.0 ML Of A 1.67 Mol/L Nickel(II) Chloride (NiCl2) Solution To A Reaction Flask. Calculate The Millimoles Of Nickel(II) Chloride the chemist has added to the flask.

Answer:

10 g

Explanation:

Right from the start, just by inspecting the values given, you can say that the answer will be  

10 g

.

Now, here's what that is the case.

As you know, a substance's specific heat tells you how much heat is needed to increase the temperature of  

1 g

of that substance by  

1

∘

C

.

Water has a specific heat of approximately  

4.18

J

g

∘

C

. This tells you that in order to increase the temperature of  

1 g

of water by  

1

∘

C

, you need to provide  

4.18 J

of heat.

Now, how much heat would be required to increase the temperature of  

1 g

of water by  

10

∘

C

?

Well, you'd need  

4.18 J

to increase it by  

1

∘

C

, another  

4.18 J

to increase it by another  

1

∘

C

, and so on. This means that you'd need

4.18 J

×

10

=

41.8 J

to increase the temperature of  

1 g

of water by  

10

∘

C

.

Now look at the value given to you. If you need  

41.8 J

to increase the temperature of  

1 g

of water by  

10

∘

C

, what mass of water would require  

10

times as much heat to increase its temperature by  

10

∘

C

?

1 g

×

10

=

10 g

And that's your answer.

Mathematically, you can calculate this by using the equation

q

=

m

⋅

c

⋅

Δ

T

, where

q

- heat absorbed/lost

m

- the mass of the sample

c

- the specific heat of the substance

Δ

T

- the change in temperature, defined as final temperature minus initial temperature

Plug in your values to get

418

J

=

m

⋅

4.18

J

g

∘

C

⋅

(

20

−

10

)

∘

C

m

=

418

4.18

⋅

10

=

10 g

The main difference between particles in solutions and suspensions lies in their size, homogeneity, stability, and behavior.

In a solution, the particles are typically individual atoms, ions, or small molecules, and their size is usually on the order of nanometers. In contrast, particles in a suspension are much larger, ranging from micrometers to millimeters in size. Suspended particles can be visible and settle over time due to gravity.

Solutions are homogeneous mixtures where the particles are uniformly distributed at the molecular level. Suspensions are heterogeneous mixtures where the particles are not uniformly distributed. The particles may settle at the bottom of the container, leading to a cloudy or opaque appearance.

Learn more about suspensions, here:

https://brainly.com/question/29199641

#SPJ4

The heat capacity of the calorimeter is 419 J/∘C. The heat capacity can be measured for a specific quantity of a substance or for a system containing that substance.

What is Heat Capacity?

Heat capacity is a physical property of a substance that describes how much heat energy is required to raise the temperature of that substance by one degree Celsius or one Kelvin. The heat capacity of a substance is typically represented by the symbol C and has units of joules per degree Celsius or joules per Kelvin.

To calculate the heat capacity of the calorimeter, we can use the formula:

q = CΔT

where q is the heat absorbed or released, C is the heat capacity of the calorimeter, and ΔT is the change in temperature.

In this case, the heat absorbed by the cooler water is equal to the heat released by the warmer water:

q = -q = -mCΔT

where m is the mass of water (100 g or 100 mL), and ΔT is the temperature change (86.0 - 53.5 = 32.5 ∘C).

Using the specific heat of water, we can calculate the heat absorbed by the cooler water:

q = mCΔT = (100 g)(4.184 J/g⋅ ∘C)(32.5 ∘C) = 13630 J

Therefore, the heat capacity of the calorimeter can be calculated as:

C = q/ΔT = 13630 J/32.5 ∘C = 419 J/∘C

To know more about Heat Capacity, visit;

https://brainly.com/question/21406849

#SPJ4

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question

mass = 18.015 g

volume = 15 cm³

We have

\(density = \frac{18.015}{15} \\ = 1.000833333...\)

We have the final answer as

Hope this helps you

Metals on reaction with acids liberate Hydrogen gas. This is the reason why bubbles are formed in the solution.

When the metals reacts with acids the mass of the metal will decreases with the liberation of hydrogen gas . This can acts as a exception for law of conservation of mass.

The law of conservation of mass determines  that in a chemical reaction mass can  neither  be created nor destroyed. For instance , the carbon atom in coal as carbon dioxide when it is burned. The carbon atom transforms  from a solid structure to a gas but its mass doesn't  changes.

The principle states  that the mass of matter, in a closed system, will always be the same no matter what type of change  can happens to the matter. Whether it's a change in state, or dissolving, or a chemical reaction, or any combination , the amount of mass will not be   change.

Learn more about law of conservation of mass:

brainly.com/question/13891351

#SPJ9

Answer:

Option A:

Zn(s) + Cu^(2+) (aq) → Cu(s) + Zn^(2+)(aq)

Explanation:

The half reactions given are:

Zn(s) → Zn^(2+)(aq) + 2e^(-)

Cu^(2+) (aq) + 2e^(-) → Cu(s)

From the given half reactions, we can see that in the first one, Zn undergoes oxidation to produce Zn^(2+).

While in the second half reaction, Cu^(2+) is reduced to Cu.

Thus, for the overall reaction, we will add both half reactions to get;

Zn(s) + Cu^(2+) (aq) + 2e^(-) → Cu(s) + Zn^(2+)(aq) + 2e^(-)

2e^(-) will cancel out to give us;

Zn(s) + Cu^(2+) (aq) → Cu(s) + Zn^(2+)(aq)

Answer:

The pH of a solution is defined as the negative logarithm (base 10) of the concentration of hydrogen ions [H+]. The concentration of hydroxide ions [OH-] can be calculated using the equation Kw = [H+][OH-], where Kw is the ion product constant for water, which is equal to 1.0 × 10^-14 at 25°C.

To find the [OH-] of a solution with pH 10.88, we first find the [H+]:

pH = -log[H+]

10.88 = -log[H+]

[H+] = 10^(-10.88) = 1.4 × 10^(-11) M

Now we can calculate the [OH-]:

Kw = [H+][OH-]

1.0 × 10^-14 = (1.4 × 10^-11)[OH-]

[OH-] = (1.0 × 10^-14) / (1.4 × 10^-11) = 7.1 × 10^-4 M

Therefore, the [OH-] of the solution is 7.1 × 10^-4 M.

Explanation: