Luster Malleability

Answer:

2-1

Explanation:

=1

Answer:

15

Explanation:

the proton and atomic number are the same hence it remains 15

1)The limiting factor in this lab simulation are biotic is Predator and Food.

2)The limiting factor in the lab simulation are abiotic is Pollution.

3)The limiting factor impacted the cricket frog population the most is Predator.

4)The limiting factor impacted the cricket frog population least is pollution.

1)The predator and Food are the biotic  limiting factor in this simulation because predator can eat the population of cricket frog and will reduce the population of cricket frog. animals eaten by food is biotic.

2)  Pollution in the lab simulation is abiotic factor because it is non living things.  

3) The limiting factor impacted the cricket frog population most is predator because for the predator , the cricket frog were the good source of food.

4) Pollution is the limiting factor which affect the cricket frog population because their growth was not much affected by pollution.

5) The cricket frog plays an important role in limiting the spread of mosquito - borne illness like west Nile virus and Malaria because cricket frog consumes mosquitoes and decrease the population of contaminated mosquitoes.

6)  The long term effects of these limiting factors on the cricket frog population in the pond eco system is that if the predators increases the population of cricket frog decreases and if the food sources decreases (mosquitoes) then cricket frog die and population decreases and vice - versa.

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The wavelength of the proton is9.9 * 10⁻⁷ nm.

The wavelength of a particle or wave is the distance between successive point in phase in the particle or the wave.

It can be said to be distance between successive crests or troughs.

The wavelength of a moving particle is given by the De Broglie's equation as follows:

where h is Planck's constant = 6.63×10⁻³⁴ Js

m = mass of particle = 1.673 x 10⁻²⁷ kg

v is velocity of proton = 3.97 x 10⁸ m/s

λ = 6.63×10⁻³⁴/1.673 x 10⁻²⁷ * 3.97 x 10⁸

λ = 9.9 * 10⁻⁷ nm

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Alpha decay of Plutonium-238 into Uranium-234. Therefore, A = 234, Z = 92, X = U

A radioactive process known as "alpha decay" releases a particle made up of two protons and two neutrons when an unstable nucleus transforms to another element. The helium nucleus that is being expelled is known as an alpha particle. Positive charge and a substantial mass characterize alpha particles.

An atomic nucleus emits an alpha particle (the helium nucleus), which causes it to change or "decay" into another atomic nucleus with a mass number that is decreased by four and the atomic number is reduced by two. This process is known as alpha decay or α-decay.

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Because the stone will accelerate owing to gravity after it is dropped at a rate of 9.8 metres per second squared, you may use physics to compute the depth of the ocean by applying the distance formula: D = v0 t + 1/2 a*t2.

the gravitational force

In addition, gravity is pulling the thing downward as it falls. Gravity is an imbalanced force at the beginning of a descent. As a result, the thing

The statute addresses the issue of bodies falling. According to the rule of parabolic fall, a falling body's distance travelled is squarely inversely related to the amount of time it takes to descend. As an illustration, a stone that is dropped twice as long as another stone will fall four times as far.

The force of gravity accelerates items as they descend to the ground.

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The volume of 4.213 x 10⁶ liters of hot air in milliliters is 4.213 x 10⁹ mL of hot air.

The volume of a substance is the amount of space that substance occupies.

The units for measuring volume of substances includes liters, milliliters, and cm³, dm³.

The milliliter is a smaller unit of the liter.

1 liter = 1000 milliliters

To convert 4.213 x 10⁶ liters of hot air to milliliters, the values is multiplied by 1000.

4.213 x 10⁶ liters of hot air to milliliters = 4.213 x 10⁶ * 1000 mL/L

4.213 x 10⁶ liters of hot air to milliliters = 4.213 x 10⁹ mL of hot air.

In conclusion, to convert volume in liters to milliliters, the value in liters is multiplied by 1000.

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According to the given statement the volume of concentrated aqueous HCI is V (ml) = 32.3 ml

In the food, textile, metal, and rubber sectors, Hydrochloric acid (HCl) is frequently employed as a bleaching agent to neutralize alkaline substances. It is neutralized when released into the environment, and it immediately hydrolyzes when it comes into contact with water.

The molecular weight of HCl = 36.461

The valence (n) of hydrogen = 1

Equation 1:

Weight of HCl needed = 0.20 eq/L * 2.0 L * 36.461 g/eq

Rewriting the equation:

Weight of HCl needed

= 0.20 eq /1000ml * 2000 ml * 36.461 grams/eq

Weight = 14.5844 grams

The weight of HCl is related its current diluted volume by the equation:

Equation 2:

Weight =V(ml) * 1.188grams * 0.38/ml

Combining eq 1 and eq 2 us eq 3

Equation 3:

14.5844 grams

=V (ml) * 1.188 grams * 0.38/millilitres

Solving for V (ml):

V (ml)

= 14.5844 grams * ml/1.188 grams * 0.38

Rounding off and Cancelling out units,

V (ml) = 32.3 ml

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The specific heat capacity of the metal rod weighing 123g is 0.14 J/gºC (option B).

The specific heat capacity of a metal substance can be calculated using the following formula:

Q = mc∆T

Where;

However, in a calorimeter, the metal and water relationship is given as follows:

Q (water) = - Q (metal)

mc∆T (water) = - mc∆T (metal)

Mass of water = density × volume

Mass of water = 1g/mL × 75mL = 75g

75 × 4.184 × {29°C - 25°C} = - {123 × c × (29 - 100)}

1255.2 = 8733c

c = 1255.2/8733

c = 0.144J/g°C

Therefore, the specific heat capacity of the metal rod weighing 123g is 0.14 J/gºC.

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In a fission reaction, uranium-235 bombarded with a neutron produce strontium - 94 , another nucleus and three neutrons.the nuclear equation is :

[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]

uranium-235 bombarded with neutrons produce strontium-94 , another small nucleus and 3 neutrons.

[tex]_{92} U^{235}[/tex]    +    [tex]^{1} n_{0}[/tex]   ------>    [tex]^{94} Sr_{38}[/tex]    +    x   +   [tex]3^{1} n_{0}[/tex]     ( x i unknown nucleus)

in this, the atomic no. and atomic mass in both the side should be same

atomic mass => 235 + 1 = 94 + 3 = 139

atomic no. 92 =  38  => 92 - 38 = 54  ( this is xenon - 139 , the unknown nucleus)

the balance nuclear equation equation is

[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]

Therefore,In a fission reaction, uranium-235 bombarded with a neutron produce strontium - 94 , another nucleus and three neutrons.the nuclear equation is :

[tex]^{235} U_{92} + ^{1} n_{0} ------ > ^{94} Srx_{38} + ^{139} Xe_{54} + 3^{1} n_{0}[/tex]

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Answer:

Since Walter can alter time and space he doesn't have the kind of place to take a nap or buy a cap for his dog zap

Explanation:

Answer:

Breaking Bad

Explanation:

walt

The value in mile is 8.35 * 10^12 miles.

It is often important to be able to convert values from one unit to another. This has always helped to make mathematical and physical computations much easier.

The conversion factor is often used to convert from one unit to another. It serves as bridge that would enable us to be able to convert quantities. The conversion factor has to be dimensionally correct.

Let us now convert  1.42 light-years to miles;

1.42 light years *  3.00 × 108 m/1 s * 1 mi/1609 m * 3600 s/1 hr * 24 hrs/1 day  * 365 days/1 year

= 8.35 * 10^12 miles

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The number of atoms of hydrogen present in 1.255 g of aluminum hydroxide, Al(OH)₃ is 2.89×10²² atoms

Mole = mass / molar mass

Mole of Al(OH)₃ = 1.255 / 78

Mole of Al(OH)₃ = 0.016 mole

1 mole of Al(OH)₃ contains 3 moles of H.

Therefore,

0.016 mole of Al(OH)₃ will contain = 0.016 × 3 = 0.048 mole of H

From Avogadro's hypothesis

1 mole of hydrogen = 6.02×10²³ atoms

Therefore,

0.048 mole of hydrogen = (0.048 mole × 6.02×10²³ atoms) / 1 mole

0.048 mole of hydrogen = 2.89×10²² atoms

Thus, we can conclude that 2.89×10²² atoms of hydrogen are present in 1.255 g of Al(OH)₃

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Answer:

melt;freeze

Explanation:

and I don't have an explanation

Answer:

Neutralization refers to aa chemical reaction where an acid and a base react with each other quantitatively.

Example:

Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water ( word equation)

Explanation:

Though we haven't been asked to write down chemical equation, it is good to know.

Here is the equation:

HCl(aq) + NaOH(aq) → NaCl (aq)+ H2O (l)

If 0.459 g of an unknown sugar is dissolved in 100.0 mL of water its osmotic pressure is found to be 0.0824 atm. The molar mass of the sugar (in g/mol) is  \M = 3.0067.

"Molar mass of many compounds can be calculated by dividing the mass of the compound by the number of moles of the compound."

Given, that the mass of unknown sugar= 0.459 g

Volume of water =  100.0 mL

Osmotic pressure to be 0.0824 atm

The temperature of the solution = 298 K

Calculating the moles

PV = nRt

R =  8.314, constant

0.0824 X 100.0 = n x 8.314 x  298

8.24 = n x 2477.57

n = 300.67

Now, calculating the molar mass

Molar mass = n  / V

300.67 /  100.0

M = 3.0067

Thus, the molar mass of the sugar is 3.0067

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Explanation:

The given values:

Mass, m = 100.0 g

Density, d = 1.59 g/mL

As we know,

→ D = m/v

By substituting the given values, we get

v = m/d = 100/1.59

v = 62.89 ≈ 63mL

The experiment makes use of Archimedes' principle, where the volume of a liquid displaced by an object, is equal to the volume of said object.

Thus, the volume displaced by the object is:

46.9 mL - 25.0 mL = 21.9 mL

The volume of the object is 18.9 mL

Density is equal to the mass divided by the volume, so:

D = m/V = 53.5 g/21.9 mL

D = 2.44 g/mL

For water,

ρ density = 1.0 g/mL

v = 425 mL

d = m/v

m = d × v

m = 1 × 425 = 425 g

The rating in kilometers per liter is 12.75 kilometer per liter

1 mile per gallon = 1.60934 Kilometer per gallon

Therefore,

30 miles per gallon = 30 × 1.60934

30 miles per gallon = 48.2802 kilometer per gallon

1 kilometer per gallon = 0.264172 kilometer per liter

Therefore,

48.2802 kilometer per gallon = 48.2802 × 0.264172

48.2802 kilometer per gallon = 12.75 kilometer per liter

Thus, the rating in kilometer per liter is 12.75 kilometer per liter

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From the images, hydrochloric acid is a strong acid because it dissociates completely in water to produce hydrogen and chloride ions.

Given the Arrhenius definition of an acid, an acid is any substance that produces hydrogen ion in solution as its only positive ion when dissolved in solution. We know that that acids could be strong or weak. Acids could also be organic or mineral. In this later classification, acetic acid is an organic acid while hydrochloric acid is a mineral acid.

With is said, let us now examine each of the beakers. We can see from each of the beakers that the beaker that contains the hydrochloric acid has the acid molecule completely dissociated to hydrogen ions and chloride ions.

In the other beaker that contains the acetic acids, there are only a few of the acetic acid molecules that have dissociated into hydrogen ion and the acetate ion.

As such, it is clear that hydrochloric acid is a strong acid because it dissociates completely in water to produce hydrogen and chloride ions.

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The energy needed to heat 5.95 g of water is 1484.406 J.

When work is done and heat and light are produced, energy is the quantitative quality that is transferred to the body or to the physical system.

The water is heated from 5.5° C to 64.9° C.

The mass of the water is 5.95 grams.

The specific heat of water is 4.2 J g⁻¹ C⁻¹ .

Now, the water is heated from:

T₁ = 5.5° C to T₂ = 64.9° C

Therefore, ΔT = T₂ - T₁ = 64.9 - 5.5 = 59.4° C

The heat energy is given as:

Q = m × C × ΔT

Q = (5.95 g ) × ( 4.2 J g⁻¹ C⁻¹ ) × ( 59.4° C )

Q = 1484.406 J

The energy released on heating 5.95 g of water from 5.5° C to 64.9° C is 1484.406 J.

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Answer:

Alliteration

Hope this helps :)

Hope this helps :)Explanation below.

Explanation:

The word S is repeated many times in the sentence, so alliteration would be the correct answer.

It takes a total of 56 days for the mass of the  chromium-51 to be reduced from  12.0 μg to 3.00 μg.

The half life of a radioactive sample refers to the time taken for only half of the radioactive substance that is originally present to decay. Now we know that radioactivity has to do with the spontaneous disintegration of a substance. This implies that the amount of the substance would continue to decreases as the time goes on.

Having said this, let us consider the question as we have it above. We all know that; the half-life of radioactive chromium-51 is 28 days then the sample of chromium-51 has a mass of 12.0 μg. We are to now obtain the number of days it will take for the mass to be reduced to 3.00 μg .

Hence;

t1/2 =  28 days

N = 3.00 μg

No =  12.0 μg

t = ?

Using;

N/No = (1/2)^t/t1/2

3/12 =  (1/2)^t/28

1/4 =  (1/2)^t/28

(1/2)^2 =   (1/2)^t/28

2 = t/28

t = 56 days

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Important qualities for scientists to have are curiosity, patience, creativity, persistence, communication, and intelligence.

Hard effort, intelligence, and the ability to effectively manage your time and tasks are, in my opinion, some crucial characteristics for a scientist to possess. Being a scientist will need you to spend a lot of time in a lab or out in nature. It takes skill to meticulously record vital and fascinating information. Additionally, you'll need to be diligent because it's crucial for scientists to put in a lot of effort and produce reliable results.

I believe that hard work is a quality that comes through in my academic performance. I always give my tasks my best effort. I make a consistent effort to get ahead and complete my task on schedule. I have to work less as I work harder. I keep myself busy, which causes me to become less busy.

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If the temperature is lowered to a dew point, condensate will be produced.

While the air temperature drops underneath its dew factor, excess moisture can be released in the form of condensation. Condensation problems are maximumly probable to occur in climates in which temperatures regularly dip to 35°F or colder over a prolonged time period.

The dew factor is the temperature to which air needs to be cooled to emerge as saturated with water vapor, assuming steady air stress and water content. while cooled beneath the dew point, moisture potential is reduced and airborne water vapor will condense to form liquid water known as dew. Both the air is cooled to its dew point or it becomes so saturated with water vapor that it can't maintain any extra water. The dew factor is the temperature at which condensation occurs

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Filtration simply refers to a method of septation technique which is used to separate insoluble solid from liquid.

For example, the suspension of chalk dust in water can be bestseparated using filtration.

All these explained above are various types of separation techniques in chemistry.

Insoluble solids are solids which cannot dissolve in water.

Miscible liquids are liquid which combine together to form a single liquid.

Separation technique refers to the process of separating the components of mixtures.

So therefore, filtration simply refers to a method of septation technique which is used to separate insoluble solid from liquid.

Complete question:

Explain what is meant by filtration, chromatography and distillation.

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Set 1 is difficult.

The formula for thermal energy is given as:

Q = mcΔT

Where m is the mass of the item, c is specific heat capacity and ΔT is the change in temperature when the item is heated.

For Set 1:

5 g of iron at 45°C and 10 g of iron at 45 °C

In this case, the mass of iron is different at the same temperature. Since there is no change in temperature hence the metal is not heated. Another reason is that the mass of iron is different in this case. Hence, this set will be difficult to find thermal energy.

Set 2:

10 g of water at 30°C and 10 g of water at 50° C

The mass of water at both temperatures is the same, and the water is heated from 30°C to 50° C The thermal energy can be easily calculated using the formula Q = mcΔT.

Set 3:

2 g of copper at 50°C and 32 g of nickel at 50°C ​

The mass of copper remains unchanged, also the temperature doesn't change. Since copper is not heated and the temperature remains constant. Hence the thermal energy will be zero.

Therefore, Set 1 will be the most difficult to find the thermal energy.

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Answer:

TRUE

Explanation:

Answer:

True

Explanation:

because high energy molecules carry the sound more quickly

A chemical equation known as an ionic equation expresses the electrolytes in an aqueous solution as dissociated ions. The net ionic equation will be:

3 Fe²⁺(aq)+2PO₄³⁻(aq)⇒Fe₃(PO₄)₂ (s).

Chemical equations known as ionic equations solely display the ions involved in a chemical reaction. Or, the ions that combine in a solution to react and create new compounds. Those ions that don't take part are referred to as spectator ions.

Ionic equations are used to simplify chemical equations by getting rid of species that aren't changing. This is highly helpful, especially when dealing with redox processes, which are challenging enough without the interference of spectator ions.

According to the question,

PO₄³⁻ phosphate of Na⁺, K⁺, Li⁺,  NH₄⁺ group 1 and NH₄⁺ Soluble.

Other than that are insoluble so, Fe₃(PO₄)₂ is soluble.

Molecular equation is :

2k₃PO₄(aq)+3FeBr₂(aq)⇒6 KBr(aq)+Fe₃(PO₄)₂ (s)

So, complete ionic equation will be :

6 K⁺(aq)+2PO₄³⁻(aq)+3Fe²⁺(aq)+6Br⁻(aq)⇒6K⁺(aq)+6Br⁻(aq)+Fe₃(PO₄)₂ (s)

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The cation is [tex]V^3^+[/tex] and the anion is [tex]Cl^-[/tex] in [tex]VCl_3[/tex].

An ionic compound is a chemical compound made up of charged ions called cations and anions that are held together by electrostatic forces.

Cations are elements with one or more positive charges because they have more number of protons than electrons.

Anions are elements with one or more negative charges because they have more number of electrons than protons.

An ion which has lost electrons and now has a positive net charge is said to be a cation. An atom's cation is smaller than the neutral atom because electrons are taken out to produce a cation.

An ion which has acquired electrons and now has a negative net charge is called an anion. The anion of an atom is larger than the neutral atom because electrons have been added to produce it.

In Vanadium (III) chloride, vanadium gives 3 electrons and become +3 charge and chlorine gains 1 electron and become -1 charge. Since 3 electrons are given by vanadium, 3 chlorine atoms are bonded, thus the compound is [tex]VCl_3[/tex].

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Answer:

1000 kg = 1 g

Explanation:

1000 g = 1 kg

please make my answer as brainelist