sodium plus chloroform sodium chloride friends in the balance equation home​

Answer:

Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere.

Answer:

Determine the volume of helium gas

Answer:

About 1,495 Liters of Helium.

Explanation:

To calculate the volume of helium gas formed when the magnet loses its superconducting properties, we can use the ideal gas law:

PV = nRT

Where:

P = Pressure (in atm)

V = Volume (in liters)

n = Number of moles of helium gas

R = Ideal gas constant (0.0821 L.atm/(mol.K))

T = Temperature (in Kelvin)

First, we need to find the number of moles of helium gas:

Given volume of liquid helium (V_liquid) = 1950 L

Density of liquid helium (ρ) = 0.125 g/mL = 0.125 g/cm³

To convert density from g/cm³ to g/L, we multiply by 1000:

Density of liquid helium (ρ) = 0.125 g/cm³ * 1000 cm³/L = 125 g/L

Mass of liquid helium (m) = Volume * Density = 1950 L * 125 g/L = 243,750 g

Next, we need to convert the mass of liquid helium to moles using the molar mass of helium:

Molar mass of helium (M) = 4.0026 g/mol

Number of moles (n) = Mass / Molar mass = 243,750 g / 4.0026 g/mol ≈ 60,907 mol

Now, we have the number of moles of helium gas (n), and we can calculate the volume of helium gas (V_gas) at 25°C (298.15 K) and 1 atm:

P = 1 atm

T = 25°C = 298.15 K

V_gas = nRT / P

V_gas = (60,907 mol) * (0.0821 L.atm/(mol.K)) * (298.15 K) / (1 atm)

V_gas ≈ 1,495 L

Therefore, approximately 1,495 liters of helium gas would be formed at 25°C and 1 atm when the magnet loses its superconducting properties.

Answer:

4HCl  +  SiO2 → 4H2O  +  SiCl4

axit clohidric  Silic dioxit  nước  Silic tetraclorua

Axit      

Explanation:

Answer:

SiCl4 + 4H2O--->Si(OH4)+4HCl

Explanation:

if you put a 4 in front of H2O it means you will have 8 hydrogens(you multiply 4 by 2) then the oxygens will be 4..on the other side that hydrogen in the brackets holds it's on 4 so that 4 isn't for both the hydrogen and the oxygen...and if you put a 4 in front of the HCl that simply means it's for both the hydrogen and oxygen.

I hope this helps

Answer:-

Since all the acid molecules have split into ions, there will be more H+ ions in a strong acid than a weak acid, hence it's pH is lower! E.g. Hydrochloric acid HCl, nitric acid HNO3. If one mole of an acid is neutralised by 2 moles of NaOH, then the acid is dibasic!

[tex]\\ \sf \longmapsto m=\dfrac{Moles\:of\:solute}{Wt\:of\:solvent(in\:g)}\times 1000[/tex]

Answer:

.00305

Explanation:

There a 7 significant figures in the number because we know that leading zeroes are NOT counted. To round the number to have only 3 significant figures, we will need to round to the 5th decimal place. Remember the basic rules of rounding; 5 and up, round up, 4 and below, round down.

.00305346 → .00305

Best of Luck!

Answer:

Is water the only liquid? If not, name 5 more

Water, ethanol, household bleach, blood, paint, milk, gasoline, mineral oil, acetone and butyl alcohol are examples of liquids. Liquids' properties allow them to flow or be poured easily into containers, lava

water is not the only liquid.

Answer:

apple juice, milk, smoothie, blood, urine

Answer:

nutrion jsbsjsb. wjjshsjs. wjsh

Answer:

Kuls are diversion channels that carry water from a glacier to village. Often spanning long distances, with some over 10 km long, kuls have been around for centuries. They are the lifeline of people of Spiti valley of Himachal Pradesh and in Jammu too.

Kul starts at the glacier, which is to be tapped. Keeping the head clear of debris is achieved by lining the sides of Kul with stones which ensure that there is no seepage or clogging. The Kul leads to the village where the water is stored in a circular water tank. The water is drawn from here are per the need of the village.

Explanation:

Here is a list of some of the traditional water conservation methods that are still in use:

Specific heat capacity tells about how  much energy is needed to raise its temperature.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

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Answer:

In fact, in many neurons three sodium ions are transported for every potassium ion; sometimes the ratio is three sodium ions for every two potassium ions, and in a few neurons it is two sodium ions for one potassium ion.

Half-life of C-14 is 5730 years

The age of the bone is the time taken to decay carbon -14 from a mass of 80 g to 0.3125 g. The decay time is 46209 years. That is the age of the bone.

Carbon -14 isotope is radioactive and undergoes nuclear decay by the emission of charged particles. The age of a fossil sample which contains carbon -14 can be determined using the time of decay.

Half life of C-14 = 5730 years

decay constant k = 0.693 / 5730 = 0.00012 yr⁻¹

Initial amount of C-14 = 80 g

final amount = 0.3125 g

Then the time taken to decay 80 g to 0.3125 g is t = 1/k ln (80/0.312)

t = ln (80/0.312) / (0.00012 yr⁻¹)

 = 46209 years.

Therefore, the age of the bone is 46209 years.

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If I could change something in my previous science classes, it would have been the fact that I struggled in the question concerning exponents. It was simple one, but I don't know how I didn't understood that. For example, if there is a question with a calculation "xy²", then I would first multiply x and y, and then calculate the exponent. I did 3 of the questions wrong because of this, it was when I was in 7th grade. I wish I had not done this kind of silly mistake. I an in 10th grade and understand it well now, though.

Answer:

False

Explanation:

Answer: I did the quiz and got it correct

Explanation:  

Biosphere- B  

Ecosystem- C  

Biome- D  

Habitat- A

Scientific Method

What is Scientific Method

A method or procedure that consists of systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.

Experiment- The growth of green algae is recorded every day for several weeks and compared

Conclusion- Under the same temperature and water conditions, green algae is grown under natural light, blue light, and green light.

Research-Based on what other scientists have done, algae life cycles are affected by light.

Analysis- The data recorded in the experiment supports the hypothesis about how algae reproduce.

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Answer:

Oxygen does not burn. It is not flammable, but it is an oxidizer.

Explanation

I think you are misunderstanding what is meant by "fire burns up air". Fire does use oxygen when it burns. But it also produces carbon dioxide. An oxygen molecule has two oxygen atoms in it. Fires use this to produce carbon dioxide by adding a single carbon atom from the fire’s fuel (wood, for instance).

hope it'll help:)

Answer:

pcl3 is the empirical formula of the compound

Answer:

filtration is the process of using a filter to remove solids from liquids or gasses.

Example:

an example of this is tea.

Answer:

4. Heart refers to a quantity

Answer:

Heat Refers To A Process

Answer:

The formula of water is H20

Answer:

Answer:

Absolute temperature and 100% accurate

Explanation:

Answer:

Absolute temp is measured on a scale in which the hypothetical lowest limit of physical temperatures is assigned the value zero (absolute zero )

Hope this helps <3 Need thanks? Comment /hearthelp

Answer:

D

Explanation:

P = Pressure

V = Volume

n = Moles

R = .08206 (because we're using liters)

T = Temperature (as K)

P(50) = (4)(.08206)(308)

P(50) = 101.09792

Divide both sides by 50

P(50)/50 = 101.09792/50

P = 2.0219584

Answer:

[tex]\boxed {\boxed {\sf D. \ 2.02 \ atm}}[/tex]

Explanation:

We are asked to find the pressure of helium gas using the ideal gas law.

[tex]PV= nRT[/tex]

In this formula P is the pressure, V is the volume, n is the number of moles of gas, R is the universal gas constant, and T is the temperature.

The pressure is unknown and we are solving for it. The volume is 50 liters, there are 4 moles of helium gas, the universal gas constant is 0.08206 L *atm/ mol * K, and the temperature is 308 Kelvin.

[tex]\bullet \ V= 50 \ L \\\bullet \ n= 4 \ mol \\\bullet \ R = \frac {0.08206 \ L * atm}{mol *K}\\\bullet \ T= 308 \ K[/tex]

Substitute these values into the formula.

[tex]P * 50 \ L= 4 \ mol * \frac {0.08206 \ L * atm}{mol *K} * 308 \ K[/tex]

Multiply on the right side. The units of moles (mol)  and Kelvin (K) cancel each other out.

[tex]P* 50 \ L = 4 * 0.08206 \ L *atm * 308[/tex]

[tex]P*50 \ L =0.32824 \ L * atm *308[/tex]

[tex]P* 50 \ L = 101.09792 \ L * atm[/tex]

We are solving for the pressure, so we must isolate the variable P. It is being multiplied by 50 liters. The inverse operation of multiplication is division, so divide both sides by 50 L.

[tex]\frac {P* 50 \ L}{50 \ L} = \frac {101.09792 \ L * atm}{50 \ L}[/tex]

[tex]P= \frac {101.09792 \ L * atm}{50 \ L}[/tex]

The units of liters (L) cancel.

[tex]P= \frac{101.09792}{50 } \ atm[/tex]

[tex]P= 2.0219584 \ atm[/tex]

If we round to the nearest hundredth place the 1 in the thousandth place tells us to leave the 2 in the hundredth place.

[tex]P \approx 2.02 \ atm[/tex]

The pressure is approximately 2.02 atmospheres and choice D is correct.

Answer:

why are anime and cartoons awesome? wt..f

Explanation:

I dont got that are you serious or making fun?

The liquid is a homogeneous mixture because the substance that formed the large crystals was uniformly dissolved.

A solution is composed of a solute and a solvent. A solution is a typical example of a homogeneous mixture.

We define a solution as any combination of solute and solvent. A solution can be regarded as a homogeneous mixture since the solute is uniformly distributed throughout the solution. The solute and solvent constitutes one phase.

When a salt crystal is added to the solution, crystallization is induced and large crystals of solute form.

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A salt crystal is a cubic form of sodium chloride that is closely bounded together by the reaction of sodium and chlorine ions during electrovalent bonding.

Taking a look at a heterogeneous mixture;

It refers to the mixtures that are not thoroughly mixed and uniform in composition.

On the other hand, homogeneous mixtures are formed when a substance i.e. solute (here, it is the salt crystal) is being added to a cool liquid(solvent) is thoroughly mixed.

From the given information, we are being told that when this single salt crystal is added to the cool liquid, large crystals are formed.

This implies that the formation of large crystals is brought about by the action of crystaliization rendering the liquid to be a homogeneous mixture.

We can therefore conclude that the correct statement about the original cool liquid is in Option D.

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Answer:

Explanation:

hope it will help you

mark me a brilliant

Answer:

6-

[tex]{ \sf{XCO _{3} }}[/tex]

because X has only one positive charge.

7-

[tex]{ \sf{increases}}[/tex]

because there is increase in hydroxyl ions which decrease the acidity or hydrogen strength of hydrochloric acid.

8-

[tex]{ \sf{Ca(NO _{3} ) _{2} }}[/tex]

Calcium has a valency of 2 and nitrate ion radicle has valency of 1

Answer:

an organ system is formed when a group of organs works together to perform complex functions. it is composed of two or more tissue types and performs a specific set of tasks for the body

Answer:

Chlorine

Explanation:

the ionization increases as you get closer to the top right. since chlorine (Cl) is the only one of the answer choices that is closer to the top right corner compared to phosphorous (P), that is the answer.

Answer:

cl

Explanation:

because ionization energy decrease from left to right