neutral grain spirit is essentially the same as

Answer:

27.50 g

Explanation:

Unless weight was somehow gained/lost during the reaction, the products should weigh as much as the reactants. Since this isn't specified the mass of the reactants should be equal to the mass of the products.

The structure of the compound, there will be ten unique signals in the carbon 13 NMR of the compound.

The NMR signals shows the atoms in a compound that are in unique chemical environments. The atoms that are in the same chemical environment will only give one signal.

Based on the structure of the compound, there will be ten unique signals in the carbon 13 NMR of the compound.

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The limiting reactant in the reaction is the NO molecule.

The limiting reactant is the reactant that is present in the least amount in the reaction. The rate of reaction depends on the limiting reactant.

Given the reaction; 4NH3 + 6NO --> 5N2 + 6H2O.

Number of moles of NH3 = 43.4 g/17 g/mol = 2.55 moles

Number of moles of NO = 30 g/30 g/mol = 1 mole

Now if 4 moles of NH3 reacts with 6 moles of NO

2.55 moles of NH3 reacts with 2.55 moles * 6 moles/ 4 moles

= 3.8 moles

Hence, the limiting reactant in this reaction is NO.

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The observations are as follows:

When a mixture of iron fillings and sulfur are heated, black iron (ii) sulfide is formed.

Unlike iron fillings, black iron (ii) sulfide is not attracted to a magnet.

When carbon sulfide is added to it, no visible reaction is observed.

When dilute hydrochloric acid is added to it, a gas with a rotten-egg smell is evolved.

The gas is hydrogen sulfide which is a reducing agents and acidic in nature.

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Answer:

It's the first answer

Explanation:

Aqueous just means that the solution is just dissolved in water

Taking into account the definition of dilution, the molarity of the unknown solution is 0.133 M.

Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.

In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

A dilution is mathematically expressed as:

Ci×Vi = Cf×Vf

where

In this case, you know:

Replacing in the definition of dilution:

Ci× 10.5 mL= 0.172 M× 80 mL

Solving:

Ci= (0.172 M× 80 mL)÷ 10.5 M

Ci= 0.133 M

In summary, the molarity of the unknown solution is 0.133 M.

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Answer:

Explanation:

A solution of zinc metal and lead nitrate react to form zinc nitrate and lead metal.

Zn(s) + Pb(NO3)2 = Zn(NO3)2 + Pb

Answer:

Ethyl magnesium Bromide

Answer:

0.5 M

Explanation:

Molar concentration : M = n/v

n = moles of solute

v = liters of solution

Hence, 5.0 / 10.0 = 0.5 M

2NaNO3(aq) + BaSO4 = Ba(NO3)2(aq) + Na2SO4(aq) (s)

Procedures involved:

The cations or anions may transfer positions in this twofold replacement/displacement reaction, which results in AB + CD AD + CB. In such a reaction, water, an insoluble gas, or an insoluble solid must be one of the byproducts (precipitate). The reaction in question has the following molecular equation:

2NaNO3(aq) + BaSO4 = Ba(NO3)2(aq) + Na2SO4(aq) (s)

Double displacement:

When two atoms or groups of atoms swap positions, a double displacement reaction occurs, creating new compounds. Typically, aqueous solutions are where it happens.

Na2SO4 + BaCl2 BaSO4 + 2NaCl is an example of a double displacement reaction.

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Answer:

they are metals so they are:-

-malleable

-ductile

because metallic bonding is the same in all direction throughout the solid

Answer:

speed and direction are the two things

16.06 cm is the height of the tetra bromoethane column in the barometer in cm.

A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.

Explanation:

Pressure of the liquid column=ρgh

ρ= density of the liquid

h= height of the column

g= due to gravity

the

height of the mercury column corresponding to 0.971 atm

= 0.951×76÷1atm = 73.796 cm

[tex]\rho_1h_1g=\rho_2h_2g[/tex]

2.96 g/mL x 73.796 cm =13.6 g/mL [tex]h_2[/tex]

[tex]h_2[/tex]=16.06148235 =16.06 cm

16.06 cm is the height of the tetra bromoethane column in the barometer in cm.

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Considering the definition of Avogadro's number:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

You can apply the following rule of three, considering the Avogadro's number:  If 1 mole of lithium contains 6.023×10²³ molecules, 2.7 moles of lithium contains how many molecules?

amount of molecules of lithium= (6.023×10²³ molecules × 2.7 moles)÷1 mole

amount of molecules of lithium=1.62621×10²⁴ molecules

Finally, the number of molecules of lithium is 1.62621×10²⁴ molecules.

On the other hand you can apply the following rule of three, considering the Avogadro's number:  If 1 mole of sodium chloride​ contains 6.023×10²³ molecules, 1.8 moles of  sodium chloride​ contains how many molecules?

amount of molecules of sodium chloride= (6.023×10²³ molecules × 1.8 moles)÷1 mole

amount of molecules of sodium chloride=1.08414 ×10²⁴ molecules

Finally, the number of molecules of sodium chloride is 1.08414×10²⁴ molecules.

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Considering the definition of molar mass, the moles of gas used are 10.625 moles.

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

Natural gas has a molar mass of 16.0 g/mole.

You started out the day with a tank containing 200.0 g of natural gas.  So, you can apply the following rule of three: If by definition of molar mass 16 grams are contained in 1 mole, 200 grams are contained in how many moles?

[tex]amount of moles at the beginning=\frac{200 gramsx1 mole}{16 grams}[/tex]

amount of moles at the beginning= 12.5 moles

At the end of the day, your tank contains 30.0 g of natural gas. So, you can apply the following rule of three: If by definition of molar mass 16 grams are contained in 1 mole, 30 grams are contained in how many moles?

[tex]amount of moles at the end=\frac{30 gramsx1 mole}{16 grams}[/tex]

amount of moles at the end= 1.875 moles

The number of moles used will be the difference between the number of moles used initially and the contents at the end of the day.

moles used= amount of moles at the beginning - amount of moles at the end

moles used= 12.5 moles - 1.875 moles

moles used= 10.625 moles

Finally, the moles of gas used are 10.625 moles.

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The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and temperature.

Micro Organism are organism that can be seen with a microscope.

Microorganisms include bacteria, protozoa, algae, and fungi.

Micro organisms exist in its single-celled form or as a colony of cells.

The main environmental factors that affect microorganism growth include chemical inhibitors, oxygen, pH, nutrients, moisture and temperature.

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When we convert 9.15 Calories to joules, the result obtained is 38.28 Joules

From the question given above, the following data were obtained:

The conversion scale to convert calories to joules is given below:

1 Calorie = 4.184 Joules

Using the above scale, we can convert 9.15 calories to joules as shown below:

1 Calorie = 4.184 Joules

Therefore,

9.15 Calories = (9.15 Calorie × 4.184 Joules) / 1 Calorie

9.15 Calories = 38.28 Joules

Thus, we can conclude from the above calculation that the energy in joules is 38.28 Joules

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Answer:

38,200J

Explanation:

 9.15 x 4.18 x 1000= 38,247 → 38,200J

Answer:

2.0 moles S

Explanation:

To find the number of moles of S, you need to convert the moles Na to moles S via the mole-to-mole ratio. This ratio is represented by the coefficients in the balanced equation. Because you wish to find moles S, you want to put this number in the numerator. Because you want to eliminate the moles Na, this number should be in the denominator.

2 Na + 1 S ---> Na₂S

4.0 moles Na             1 mole S
----------------------  x  ---------------------  =  2.0 moles S
                                 2 moles Na

Answer:

1.24×10^6/6.2×10^-3

200

acc to scientific notation: 0.2×10^3 is the answer

Explanation:

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Answer:

The diagram represents the general equation for photosynthesis.

What does the X represent?

Explanation:

Carbon dioxide

Answer: d. You would decrease the pressure

Explanation:

If the temperature of a gas is held constant, the pressure and volume vary inversely.

If the gas's temperature remains constant, then increase the volume of the gas with a decrease in the pressure. Therefore, option (D) is correct.

Boyle’s law can be described as at a constant temperature, the pressure exerted by a given mass of gas being inversely proportional to the volume occupied by the gas.

The pressure and volume of a gas at a particular temperature have an inverse relationship.

P ∝ 1/V

or   P₁ .V₁ = P₂. V₂                                                             ................ (1)

Where the initial and final pressure of the gas is P₁ and  P₂ respectively.  The initial and final volume of the gas is V₁ and  V₂ respectively at temperature 'T'.

Therefore, if we keep the temperature of the gas constant. them the volume of the gas will increase only if we decrease the pressure of the gas.

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The mass of the hydrogen gas in tank, given the data is 6.17 Kg

PV = znRT

Divid both sides by zRT

n = PV / zRT

but

mole (n) = mass (m) / molar mass (M)

Thus,

m / M = PV / zRT

m = MPV / zRT

m = (2.016 × 493.4615 × 220) / (1.45 × 0.0821 × 298)

m = 6169 g

Divide by 1000 to express in Kg

m = 6169 / 1000

m = 6.17 Kg

Complete question

A gaseous hydrogen stored at 500 Bar and 25°C in a composite storage with an internal volume of 220 liters. Determine the mass of the hydrogen in the tank. Use a compressibility factor Z = 1.45

3.06 kg

6.17 kg.

13.0 kg

5.05 kg

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Answer:

A rule of thumb is that 1.5 lbs. of baking soda per 10,000 gallons of water will raise alkalinity by about 10 ppm. If your pool's pH is tested below 7.2, add 3-4 pounds of baking soda. If you're new to adding pool chemicals, start by adding only one-half or three-fourths of the recommended amount.

Answer:

1kg gold because when it's mined it needs stronger machines

1kg gold because when it's mined it needs stronger machines.

The amount of space occupied by a three-dimensional figure as measured in cubic units.

Gold is called a heavy metal because of its high density, which comes from the fact that each of its atoms is individually very heavy.

Hence, 1kg gold because when it's mined it needs stronger machines.

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Answer: 0.118M

Explanation:

The formula for molarity is: [tex]M=\frac{mol solute}{L solution}[/tex]

First, we need to find the number of moles of NaCl.

[tex]2.70gNaCl*\frac{1molNaCl}{58.44gNaCl} =0.05molNaCl[/tex]

Next, we must convert millimeters to liters. We can do that by dividing the number of mL by 1000.

[tex]\frac{425mL}{1000} =0.425L[/tex]

Now we have our needed data! All we need to do now is plug in our data to the molarity formula.

[tex]M=\frac{0.05mol}{0.425L} =0.118M[/tex]

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From the calculation, the molar mass of the solution is 141 g/mol.

We know that;

ΔT = K m i

K = the freezing constant

m = molality of the solution

i = the Van't Hoft factor

The molality of the solution is obtained from;

m = ΔT/K i

m = 3.89/5.12 * 1

m = 0.76 m

Now;

0.76 =  26.7 /MM/0.250

0.76 = 26.7 /0.250MM

0.76 * 0.250MM =  26.7

MM= 26.7/0.76 * 0.250

MM = 141 g/mol

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The mass of NO produced is 9.3 g; option D.

The mass of nitrogen (ii) oxide, NO, produced from the reaction is determined from the mole ratio of the reaction.

The mole ratio of ammonia to oxygen from the equation of the reaction is 4 : 5.

moles of oxygen = 11.8/32 = 0.368

moles of ammonia = 8.3/17 = 0.488

Oxygen is the limiting reactant.

Mass of NO produced = 0.369 * 4/5 * 30 = 9.4 g NO

In conclusion, approximately 9.3 g of NO is produced.

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Answer:

Chemical reaction A, because the reactant is a compound

Explanation:

In a decomposition reaction, a compound is broken down into its components, so the number of products is greater than the number of reactants

Chemical reaction A, because the reactant is a compound is a statements correctly identifies the decomposition reaction and describes a substance involved.

When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

Although a chemical reaction is not always a "one-way street," as we'll examine further in the next section, an arrow is drawn between the reactants and products to denote the direction of the reaction.

 Our equation must have them in it in order for there to be an equal number of atoms of each element on both sides of the equation.

Therefore, Chemical reaction A, because the reactant is a compound is a statements correctly identifies the decomposition reaction and describes a substance involved.

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