What concentration of NO−3NO3− results when 897 mL897 mL of 0.497 M NaNO30.497 M NaNO3 is mixed with 813 mL813 mL of 0.341 M Ca(NO3)2?

C₃H₈ has an empirical formula mass of 44 g/mol. Hence, C₃H₈ is also the molecular formula.

When twο οr mοre distinct elements are chemically mixed in a specific ratiο, the resultant substance is knοwn as a cοmpοund.  Chemical bοnds, such as cοvalent bοnds, iοnic bοnds, οr metallic bοnds, hοld the cοnstituent parts οf a cοmpοund tοgether.

We must first cοmpute the mοles οf each element present in the cοmpοund in οrder tο derive its empirical fοrmula.

We can figure οut hοw many mοles οf carbοn and hydrοgen there are in 100 g οf the chemical by dοing the fοllοwing calculatiοn:

81.71 g / 12.011 g/mol = 6.80 moles of carbon

18.29 g / 1.008 g/mol of hydrogen = 18.15 moles.

The simplest whole number ratio of carbon to hydrogen atoms must next be determined. In order to do this, we divide both values by the lesser amount, in this case 6.80 moles:

Carbon: 6.80 moles / 6.80 moles = 1.00 Hydrogen: 18.15 moles / 6.80 moles = 2.67

To get whole numbers, we must multiply both values by a factor. By multiplying each by 3, the smallest whole number ratio is obtained:

1.00 x 3 = 3 carbon

2.67 x 3 = 8.01 x 8 for hydrogen.

As a result, the compound's empirical formula is C₃H₈.

Knowing the compound's molecular weight is necessary to determine its molecular formula. The compound's MWt (molecular weight) is 44, as stated.

C₃H₈ has an empirical formula mass of 44 g/mol. Hence, C₃H₈ is also the molecular formula.

Any molecule with the empirical formula C₃H₈, like propane, might be the structural formula of the chemical (CH₃CH₂CH₃).

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Add more chlorine so that chlorine is in excess in the reaction will be the most effective way to decontaminate the water from legionnaires disease.

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Answer:

See below

Explanation:

The process through which DNA replicates itself in the course of the cell division shall be DNA replication. There was a mistake. A 'Y' shape is generated by the separation of the two individual DNA strands called a 'field' replication. These two different strands act as models for the creation of new DNA strands

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Answer:

its true

Explanation:

Answer:

true

Explanation:

you stop on ground, ground vibrates and makes sound

The correct answer for  volume would the krypton occupy are 29.8 mL , 5375 mL , 6.5 * 10^ 5 mL .

We can solve this problem by using Boyle's Law, which states that:

"For a fixed mass of an ideal gas kept at constant temperature, the pressure

of the gas is inversely proportional to its volume"

Mathematically:

pV = const. where

p is the pressure of the gas

V is its volume

We can rewrite the formula as

PiVi = P2V2

For the gas in this problem:

P=0.400atm is the initial pressure

Vi 75.0mL is the initial volume

765mm Hg 1.006am is the final pressure (using the conversion factor

1atm = 760atm )

Solving for V2, we find the final volume:

V 2 =p1vi/ p2 =(0.400) (75.0)/ 1.006 = 29.8mL

We can solve this part by using again the equation:

Where in this case we have:

p 1= 0.400at is the initial pressure

V_{1} = 75mL is the initial volume

p_{2} = 4, nm*H_{0} is the final pressure

Converting into atmospheres,

p_{2} = 4 Hg 7mm/d -0.00536m

And solving for V2, we find the final volume:

V_{2} = (p_{1}*V_{1})/p_{2} = ((0.4)(75))/0.0056 = 5357mL

e)

As before, we use Boyles' Law:

p{1}*V{1} = p{2}*V{2}

In this part we have:

p{1} = 0.4atm is the initial pressure of the gas

V{1} = 75mL is the initial volume of the gas

p{2} = 3.5 * 10 ^ - 2   torr

1 torr is equivalent to 1 mmHg, so the conversion factor is the same as before.

therefore the final pressure in atmospheres is:

p2=3.50 *10^-2 2mm Hg 760mmHg/atm 4.6-10-atm

And so, the final volume of the krypton gas is:

V{2} = (p{1}V{1})/p{2} = ((0.4)(75))/(4.6 * 10 ^ - 5) = 6.5 * 10 ^ 5 * mL.

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Answer: Yes

Explanation: Grease is a mixture of higher alkanes, so it is sticky and non-polar in nature. Both are hydrophobic in nature, both possess similar non-polar property, so based on like dissolve like it gives solubility. So stains of grease becomes soluble in petrol, remove stain in from cloth and so it becomes clean.

Sujan can remove the grease from his shirt with petrol because of the chemistry principle 'like dissolves like'. Grease, being nonpolar, dissolves better in petrol, another nonpolar substance, than in polar water.

Yes, Sujan can indeed remove the grease from his shirt by washing it with petrol. The reason is due to a principle in chemistry known as 'like dissolves like'. This means that polar substances tend to dissolve other polar substances, and nonpolar substances dissolve other nonpolar substances.

Grease is a nonpolar substance, which means it doesn't mix well with water, a polar substance. However, petrol, also being a nonpolar substance, can dissolve the grease and hence is effective at removing it.

Soap is often used to mediate this process, as it has a polar head and a nonpolar tail, allowing it to break up the grease into smaller droplets that can be washed away by water. But in this case, the petrol works directly due to its nonpolar nature.

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Therefore, 75 patients experience severe symptoms.

A symptom is a disease manifestation that the patient can see for themselves, whereas a sign is a disease manifestation that the doctor can see. A symptom is subjective, whereas a sign is objective proof of a sickness.

Let's assume the total number of patients admitted to the hospital is "x".

We know that 40% of all patients admitted have mild and moderate symptoms. Therefore, the number of patients with mild and moderate symptoms is:

0.4x

We also know that 50 patients have mild and moderate symptoms. Therefore, we can write:

0.4x = 50

Solving for x, we get:

x = 125

So the total number of patients admitted to the hospital is 125.

Now, we can find the number of patients who experience severe symptoms by subtracting the number of patients with mild and moderate symptoms from the total:

125 - 50 = 75

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The volume of the weather balloon at 75 cmHg is  (n₁ * R * T₂) / P₂ = (n₁ * 0.0821 L·atm/(mol·K) * 308.15 K) / 0.9868 atm.

The volume of the weather balloon at 75 cmHg when it is heated to 35 degrees Celsius, we can use the ideal gas law, which states that the product of pressure (P) and volume (V) of a gas is proportional to the product of the number of moles (n) and the temperature (T) in Kelvin.

PV = nRT

Where R is the ideal gas constant.

First, let's convert the initial volume from dm³ to liters:

Initial volume = 605 dm³ = 605 L

At STP (Standard Temperature and Pressure), the temperature is 273.15 K and the pressure is 1 atmosphere (atm).

Using the initial conditions:

P₁ = 1 atm

V₁ = 605 L

T₁ = 273.15 K

We can calculate the number of moles (n₁) of gas using the ideal gas law:

n₁ = (P₁ * V₁) / (R * T₁)

Now, we need to find the final volume (V₂) at 75 cmHg and 35 degrees Celsius.

Converting 75 cmHg to atmospheres:

P₂ = 75 cmHg * (1 atm / 76 cmHg) ≈ 0.9868 atm

so,

P2 = 75 cmHg / 76 cmHg/atm = 0.9868 atm.

Now we can substitute the values into the equation and calculate V2:

V2 = (1 atm / 0.9868 atm) * (T2 / 308.15 K) * (605 liters).

Please provide the new temperature (T2) in Celsius, and I will calculate the volume for you.\((n₁ * R * T₂) / P₂ = (n₁ * 0.0821 L·atm/(mol·K) * 308.15 K) / 0.9868 atm\)

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The material which requires the most heat to raise its temperature from 10°C to 30°C is oil.

The formula which we used to calculate the amount of involved heat in relation with specific heat is:

Q = mcΔT, where

Among the given materials, specific heat of oil is highest than other materials so will require maximum absorbed heat.

Hence, oil requires the most heat.

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The average atomic mass of titanium on the given planet is approximately 46.68164 atomic mass units (u). The average atomic mass may vary depending on the specific isotopic composition of titanium found on different celestial bodies or regions.

To calculate the average atomic mass of titanium on the given planet, we need to consider the natural abundances and masses of each isotope of titanium.

The average atomic mass is calculated by multiplying the natural abundance of each isotope by its respective mass and summing them up.

Let's perform the calculation step by step:

Step 1: Multiply the abundance of each isotope by its mass:

(73.700% * 45.95263 u) + (15.000% * 47.94795 u) + (11.300% * 49.94479 u)

Step 2: Calculate the individual contributions from each isotope:

= (0.737 * 45.95263) + (0.150 * 47.94795) + (0.113 * 49.94479)

Step 3: Add up the individual contributions:

= 33.84765431 + 7.1921925 + 5.64179347

Step 4: Sum up the contributions:

= 46.68164 u

Therefore, the average atomic mass of titanium on the given planet is approximately 46.68164 atomic mass units (u).

It's important to note that the calculation assumes the provided natural abundances are accurate and representative of the titanium isotopes on that planet.

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Answer:

Explanation:

As a result, the reaction of propane (C H) 3 8 and oxygen should produce carbon dioxide, water, and heat as products, and the balanced chemical equation will be: C H3 8 + 5O2 3CO2 + 4H O2 + heat. Reactants have the next highest potential power level when compared to materials.

Answer:

water and carbon dioxide

Explanation:

Propane undergoes combustion reactions in a similar fashion to other alkanes. In the presence of excess oxygen, propane burns to form water and carbon dioxide.

I hope this helps!

Answer:

The waters' temp increased

Explanation:

The temperature of the water in the swimming pool has increased due to the heat from the Sun. As a result, the particles in the water are moving faster and have a higher kinetic energy than in the morning.

Answer:

Ptotal=P1+P2+… +Pn. + P nExplanation:

its c

1 mL = 0.815 g

11.2 mL = X

X = 11.2 × 0.815

= 9.128 g

mole = 9.128/58

= 0.157 mole

1 mole = 6.02 × 10^23 atoms

0.157 mol = x

X = 0.157/1 × 6.02 × 10^23

= 9.451 × 10^22 atoms of C

please to recheck answers to ensure they are correct

I really hope this helps

Answer:

a)  Fe₂S₃(s) + 6H⁺(aq) ---> 6HBr(g) + Fe³⁺

b) Net ionic equation: Cu²⁺(aq) + CO₃²⁻(aq) ---> CuCO₃(s)

c) No reaction

d) Net ionic equation: Bi(OH)₃(s) + 3H⁺(aq) ---> Bi³⁺(aq) + 3H₂O

Explanation:

a) This is a double displacement reaction between solid iron(iii) sulphide and hydrobromic acid to produce hydrogen sulphide gas. The full and net equations of the reaction are given below:

Fe₂S₃(s) + 6HBr(aq) ---> 2FeBr₃ + 3H₂S(g)

Net ionic equation:  Fe₂S₃(s) + 6H⁺(aq) ---> 6HBr(g) + Fe³⁺

b) This is a double displacement reaction between potassium carbonate and copper (ii) nitrate to produce insoluble copper (ii) carbonate. The full and net equations of the reaction are given below:

K₂CO₃(aq) + Cu(NO₃)₂(aq) ---> KNO₃(aq) + CuCO₃(s)

Net ionic equation: Cu²⁺(aq) + CO₃²⁻(aq) ---> CuCO₃(s)

c) No reaction as no precipitate is formed

d) This is a neutralization reaction between bismuth (iii) hydroxide and trioxonitrate (v) acid to produce sat and water. The full and net equations of the reaction are given below:

Bi(OH)₃(s) + 3HNO₃(aq) ---> Bi(NO₃)₃(aq) + 3H₂O(l)

Net ionic equation: Bi(OH)₃(s) + 3H⁺(aq) ---> Bi³⁺(aq) + 3H₂O

The result of the given mathematical operation is - 5.1. Here the significant figures must be rounded to 2 because we have to consider the decimal point of those digit with least decimal points.

Significant figures are valid digits with certainty plus some know uncertainty associated with it. To count the significant figures in a number there are certain rules and these rules must be followed with mathematical operations too.

When two decimal numbers are adding, the result must contains equal number of decimal points as in the number with the least decimal points. This rule must be followed not only for addition but also for all other operations too.

Here the number with least decimal point is 12.4, with one decimal point only, hence the answer must be end in two decimal point. Here we are substracting a large number from a small number thus, negative sign is added to the answer.

i.e. 7.273 - 12.4 = - 5.1.

Therefore, the answer for the given mathematical operation is -5.1.

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Answer:

A typical atom consists of three subatomic particles: protons, neutrons, and electrons (as seen in the helium atom below). Other particles exist as well, such as alpha and beta particles (which are discussed below). The Bohr model shows the three basic subatomic particles in a simple manner. Most of an atom's mass is in the nucleus—a small, dense area at the center of every atom, composed of nucleons. Nucleons include protons and neutrons. All the positive charge of an atom is contained in the nucleus, and originates from the protons. Neutrons are neutrally-charged. Electrons, which are negatively-charged, are located outside of the nucleus.

Explanation:

A centripetal force is experienced by any item traveling in a circle (or along a circular path).

A centripetal force is a force that causes a body to move in a circular motion. The centripetal force always acts orthogonally to the motion of the body and towards the stationary point of the path's instantaneous center of curvature.

Centripetal force is demonstrated by the rotation of the moon around the earth and the spinning of the top.

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Answer:

1.5x10²² particulates

Explanation:

Assuming ideal behaviour, we can solve this problem by using the PV=nRT formula, where:

We input the given data:

And solve for n:

Finally we calculate how many particulates are there in 0.025 moles, using Avogadro's number:

The chemical formula for x and y is Cu₂O and CuO. The mass cooper which can react with 0.5g of oxygen to yield x and y is 2.745 g.

A chemical formula is a phrase that lists the constituent parts of a compound together with their relative quantities. No subscript is used if there is just one atom of a certain kind. A subscript is added to the symbol of an atom if it contains two or more of a certain type of atom.

1. 1.535 g of X → 1.365 g of Copper

1.535 – 1.365 = 0.170g of Oxygen

Atomic weight of Cu = 63.5,

Atomic weight of Oxygen = 16

For Cu 1.365 g / 63.5 = 0.02 mol

For Oxygen 0.170 g / 16 = 0.01 mol

X = Cu₂O

1.450 g of Y → 1.160 g of Cu

1.450 – 1.160 = 0.290 g of Oxygen

For Cu = 1.160 g / 63.5 = 0.018 mol

For Oxygen = 0.290 g / 16 = 0.018 mol

Y = CuO

2. The total mass of Oxygen = 0,170 g + 0,290 g

= 0.460 g

Total mass of Cu = 1.160 g + 1. 365 g

= 2.525 g

0.460 g of Oxygen → 2.525 g of Cu

0.500 g of Oxygen → (2.525 x 0.5) / 0.460

= 2.745 g of Cu

Thus, The law of multiple proportions was formulated by John Dalton in 1804.

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Answer:

nitrogen oxide

Explanation:

Answer:

4.76

Explanation:

In this case, we have to start with the buffer system:

\(CH_3COOH~->~CH_3COO^-~+~H^+\)

We have an acid (\(CH_3COOH\)) and a base (\(CH_3COO^-\)). Therefore we can write the henderson-hasselbach reaction:

\(pH~=~pKa+Log\frac{[CH_3COO^-]}{[CH_3COOH]}\)

If we want to calculate the pH, we have to calculate the pKa:

\(pH=-Log~Ka=4.76\)

According to the problem, we have the same concentration for the acid and the base 0.1M. Therefore:

\([CH_3COO^-]=[CH_3COOH]\)

If we divide:

\(\frac{[CH_3COO^-]}{[CH_3COOH]}~=~1\)

If we do the Log of 1:

\(Log~1=~zero\)

So:

\(pH~=~pKa\)

With this in mind, the pH is 4.76.

I hope it helps!

Answer:

686.43363984 is the answer when 7.8 moles is converted.

IUPAC name for the compound is 5,6 Dimethyl Heptene.

This refers to a naming based on the highest length of the carbon molecule- chains that are joined by either a single bond, continuous chain, or ring.

In IUPAC naming / Nomenclature, multiple bonds or atoms other than carbon and hydrogen are indicated by suffixes and prefixes with respect to a particular set of priorities.

Alkane= CnH2n+2

Alkene= CnH2n

Alkyne= CnH2n-2

C - Chain =7

H- Chain =14

CH₃ - bond= 2

Therefore,

n= 7

2n=14

It is an alkene hydrocarbon. The methyl group is present at the 5th and 6 chain.

Hence, the IUPAC name of the compound is 5,6 Dimethyl Heptene.

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Answer:Small-scale technique means a small quantity of chemicals that contribute to the safety of the experiments. Instead of using big beaker of chemical, micro scale technique utilize small quantities of chemical and scaled-down science equipment.

Explanation:

Answer:

Did you figure out what it was?

Explanation:

Answer:

D) atom

Explanation:

There are two characteristics of molecules, one is geometry and other is shape. Shape is excluding lone pair surrounding the central element and geometry is including the lone pair. Therefore, the angle of the given molecule can be found out by VSEPR theory.

VSEPR stands for valence shell electron pair repulsions. VSEPR theory is used to predict the shape and geometry of molecules on the basis of valence electrons pairs that are present around the central element of the molecule.

According to VSEPR theory, Lone pair lone pair repulsion is greater than bond pair bond pair repulsion. There are so many limitations of VSEPR theory. There is a repulsion between bond pair electrons and lone pairs present on the central element.

a) bond angle is 180°

b)bond angle is 120°

c)bond angle is 107.28'

d)bond angle is 109.28'

Therefore, the angle of the given molecule can be found out by VSEPR theory.

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The new volume (in L) is 12.2 L

Information given:

Volume 1 = 15.0 L

Temperature 1 = 298 K ---------> Temperature 2 = 383 K

Pressure 1 = 3.36 Atm -----------> Pressure 2 = 5.308 Atm

Information they're asking: New Volume 2?

Substituting it with numbers (Yay! we were provided Kelvins, that's always a plus), we get;

3.36 Atm * 15.0 L * 383 K = V2  = 12.2 L

298 K * 5.308 Atm

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