what is the diffrent bitwene iron and metal​

Answer:

C - commas indicate a natural pause in the sentence

Thanks for the points, I need them to help other people,

Thanks,

Tqkeoi.

Answer:

HOPE IT HELPS

Answer:

1. the mass of H2CO3 produced is 1.675 grams.

2. the percentage yield of H2CO3 is 59.7%.

Explanation:

1. Using stoichiometry, we can find the moles of NaHCO3 and Na2CO3 produced in the reaction:

2 NaHCO3 -> Na2CO3 + H2CO3

Moles of NaHCO3 = 3.81 g / 84.01 g/mol = 0.04532 mol

Moles of Na2CO3 = 2.86 g / 105.99 g/mol = 0.02700 mol

Since the reaction produces an equal amount of Na2CO3 and H2CO3, we know that 0.02700 mol of H2CO3 was produced.

To find the mass of H2CO3 produced, we can use its molar mass:

Mass of H2CO3 = 0.02700 mol x 62.03 g/mol = 1.675 g

Therefore, the mass of H2CO3 produced is 1.675 grams.

2. The theoretical yield of H2CO3 is the amount that would be produced if the reaction went to completion and all of the NaHCO3 was converted to Na2CO3 and H2CO3. We can calculate the theoretical yield of H2CO3 by multiplying the moles of NaHCO3 used in the reaction by the molar mass of H2CO3:

Theoretical yield of H2CO3 = 0.04532 mol x 62.03 g/mol = 2.806 g

The percentage yield is calculated by dividing the actual yield (1.675 g) by the theoretical yield (2.806 g) and multiplying by 100:

Percentage yield of H2CO3 = (1.675 g / 2.806 g) x 100% = 59.7%

Therefore, the percentage yield of H2CO3 is 59.7%.

Answer:

Olfactory indicators

Explanation:

The substance whose odour changes in an acidic of basic medium are called olfactory indicators. In an olfactory indicator , smell varies depending on whether it is mixed with an acidic or basic solution.

Answer:

Helium has atomic mass  4.002602.

So the answer to yr question is helium.

Answer:

don't know really and don't know at alll

Answer:

Radiative equilibrium is the condition where the total thermal radiation leaving an object is equal to the total thermal radiation entering it. It is one of the several requirements for thermodynamic equilibrium, but it can occur in the absence of thermodynamic equilibrium.

Answer:

Radiative equilibrium is the condition where the total thermal radiation leaving an object is equal to the total thermal radiation entering it. It is one of the several requirements for thermodynamic equilibrium, but it can occur in the absence of thermodynamic equilibrium.

Hope this helps :)

Answer:

velocity

Explanation:

because he is going 30 miles west

Answer:

Anaxagoras was perhaps the first literate person to attempt to explain physical phenomena rationally, basing his ideas upon careful observations and simple experiments. This is fundamental to modern science and is the sine qua non of environmental study.

When the acidic byproduct of plaque tears away at the teeth's enamel, demineralization of the teeth takes place.

Thus, Mineral molecules like calcium and phosphate give enamel, which is made of minerals, a lot of its strength and hardness.

When a tooth experiences tooth decay, the minerals inside it start to wear away (thus the term "demineralization") and render the tooth's enamel permeable, which can occasionally result in cavities or other dental problems.

Although the definition of bone demineralization may make you nervous, it actually happens naturally throughout the course of a tooth's lifespan.

Thus, When the acidic byproduct of plaque tears away at the teeth's enamel, demineralization of the teeth takes place.

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Answer:

Nobelium or Beryllium

According to the explanation given in our previous session, now we have a similar question but with a slight difference, but first let's set up the reaction:

2 RbNO3 -> 2 RbNO2 + O2

We have 5.0 moles of RbNO3

From the molar ratio we see that 2 moles of RbNO3 is equal to 1 mol of O2, therefore if we have 5 moles of RbNO3, we will have 2.5 moles of O2 being produced.

Since the question is asking "how many liters" we have to assume that we are dealing with gases and these gases are at STP (standard temperature and pressure), which is T = 273K and P = 1 atm, in these specfici conditions, 1 mol of gases will have a volume of 22.4 Liters, therefore if O2 has 2.5 moles of O2

1 mol = 22.4L

2.5 moles = x L

x = 56 Liters of O2 are being produced with 5.0 moles of RbNO3

ANSWER

Acidic

EXPLANATION

Ammonium chloride is an acidic salt prepared the combination of a strong acid and a weak base

The strong acid is the hydrochloric acid and the weak base is the ammonium hydroxide.

Below is the reaction between hydrochloric acid and ammonium hydroxide

Therefore, the pH of NH4Cl in solution is acidic.

The mid-ocean ridge would be the longest and largest mountainous region. With a circumference of 40,389 miles, it genuinely is a world landmark.

The water covers around 90% of the mid-ocean ridge system. The world is crisscrossed by a system of mountains as well as valleys that resembles the seams in a baseball. Tectonic plate movement on Earth is what creates it.

Mountain ranges like the Rockies had also often grown and fallen over the evolution of our planet. Whenever two continents clash, mountains are created. Due to their identical weight as well as diameter, neither plate would bury beneath the other.

In a process known as plate tectonics, sections of such Earth's mantle, known as plates, collide with one another as well as buckle up like such a rear bumper in a frontal collision to build the world's largest mountain ranges.

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Answer:

E.  They form because electrons can move freely between atoms.

Explanation:

Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.

Answer:

3.3 * 10^-12

Explanation:

The balanced equation of the reaction is;

2H+(aq) + Cu(s) ---------> H2(g) + Cu2+(aq)

Hence two electrons were transferred so n=2

E°cell = E°cathode - E°anode

E°cell = 0 V - 0.34 V

E°cell = - 0.34 V

Then;

E°cell = 0.0592/n log K

Substituting values;

- 0.34 = 0.0592/2 log K

- 0.34/0.0296 = log K

-11.486 = log K

K = Antilog (-11.486)

K = 3.3 * 10^-12

To solve this we must be knowing each and every concept related to force. Therefore, the  objects motion will be towards downward with a force of 5 N.

A force is an outside entity that has the power to alter a body's state of rest or motion. It has a direction and a magnitude. The point where forces are applied is determined by the the force's direction as well as the application of the force.

Newton and dyne units are used to measure the force exerted on an item. When using the centimeter kilogram second system of units, force is measured in dynes (CGS unit). In the common international system of units, it is denoted by the letter Newton (N) (SI unit).

upward force=5 N

downward force= 10 N

total force acting on body=downward force-upward force

                                          = 10 N - 5 N

                                          =5 N downward force

The  objects motion will be towards downward with a force of 5 N.

Therefore, the  objects motion will be towards downward with a force of 5 N.

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An error during DNA replication would create a gene mutation.

During DNA replication, the genetic information in a cell is copied to make new DNA molecules. However, mistakes can occur during this process, leading to changes in the DNA sequence, which can result in a mutation. Mutations can also be caused by exposure to environmental factors, such as radiation or chemicals, which can damage the DNA molecule directly or affect the cellular processes involved in DNA replication.

Mutations can have a variety of effects on the organism, ranging from no effect to causing serious health problems or even death. Gene mutations can also be inherited from a parent, which can result in genetic disorders or predisposition to certain diseases. Therefore, it is important to understand the mechanisms of gene mutations and their potential impacts on organisms.

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Answer:

i think the answer is b but dont knock me if its not

Explanation:

Answer:

Explanation:

8.00 + 9.00 + 3.00 = 20 i dont really know what your asking but i bet your really smart!

We need 147.5 ml of 10% CuSO4 solution and 33.6 ml of 20% NaOH solution to obtain 10 g of Cu(OH)2.

To obtain 10 g of Cu(OH)2, we need to start by writing the balanced chemical equation for the reaction between copper sulphate (CuSO4) and sodium hydroxide (NaOH):

CuSO4 + 2NaOH -> Cu(OH)2 + Na2SO4

From the balanced equation, we can see that one mole of CuSO4 reacts with two moles of NaOH to produce one mole of Cu(OH)2 and one mole of Na2SO4.

The molar mass of Cu(OH)2 is 97.56 g/mol. Therefore, we need 10 g / 97.56 g/mol = 0.1024 mol of Cu(OH)2.

To determine how much CuSO4 solution and NaOH solution we need, we can use the following equations:

Amount of CuSO4 required = 0.1024 mol x (159.61 g/mol) / 0.1 = 163.38 g

Amount of NaOH required = 0.2048 mol x (40.00 g/mol) / 0.2 = 40.96 g

Where the first equation is using the molar mass of CuSO4 and the density of the solution to determine the required volume. The same idea is used in the second equation but with NaOH.

Using the density of the solutions, we can convert the required mass to volume:

Volume of CuSO4 solution = 163.38 g / 1.107 g/ml = 147.5 ml

Volume of NaOH solution = 40.96 g / 1.219 g/ml = 33.6 ml

Therefore, we need 147.5 ml of 10% CuSO4 solution and 33.6 ml of 20% NaOH solution to obtain 10 g of Cu(OH)2.

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A solution containing a KCl dissolved in water will have a higher boiling point and a lower freezing point than that of pure water.

Elevation in boiling point is a phenomenon that describe the boiling point of a liquid will be higher when another compound is added. Which means a solution has higher boiling point than pure solvent .

Depression in freezing point is a phenomenon that describe the freezing point of a liquid will be lower when another compound is added. Which means a solution has lower freezing point than pure solvent.

Thus, The boiling point and the freezing point of a solution of KCl in water will be greater and lower, respectively, than that of pure water.

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(a) the molecular formula of the compound is C₆H₁₂.

(b)  the molecular formula of the compound is NH₂Cl.

(a) Given the empirical formula CH₂ and a molar mass of 84 g/mol, we need to determine the molecular formula. To do so, we need to find the factor by which the empirical formula needs to be multiplied to achieve the given molar mass.

The empirical formula CH₂ has a molar mass of 14 g/mol (12 g/mol for carbon + 2 g/mol for hydrogen).

To find the factor, we divide the molar mass by the empirical formula mass:

Factor = (molar mass) / (empirical formula mass) = 84 g/mol / 14 g/mol = 6

Therefore, the molecular formula is obtained by multiplying the empirical formula by the factor:

CH₂ × 6 = C₆H₁₂

Thus, the molecular formula of the compound is C₆H₁₂.

(b) Given the empirical formula NH₂Cl and a molar mass of 51.5 g/mol, we follow a similar approach.

The empirical formula NH₂Cl has a molar mass of 51.5 g/mol (14 g/mol for nitrogen + 2 g/mol for each hydrogen + 35.5 g/mol for chlorine).

To find the factor, we divide the molar mass by the empirical formula mass:

Factor = (molar mass) / (empirical formula mass) = 51.5 g/mol / 51.5 g/mol = 1

Therefore, the molecular formula is the same as the empirical formula: NH₂Cl

Hence, the molecular formula of the compound is NH₂Cl.

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Answer:

0.02 L (20 mL) of ammonium sulfate solution.

Explanation:

Solutions => Molarity.

You can note that we have a given mass of ammonium sulfate ((NH4)2SO4) and its concentration (molar), so to solve this problem we have to understand first what is the molarity: the molarity (M) of a solution is the number of moles of solute dissolved in one liter of solution. The formula of molarity is the following:

We can solve for 'liters of solution' but we don't know what is the value of moles of solute because we have the amount of solute in grams (mass).

We can find the number of moles of ammonium sulfate by using its molar mass, which is 132 g/mol. Remember that you can calculate the molar mass of a compound using the periodic table. The conversion from grams to moles will look like this:

We have 0.130 moles of ammonium sulfate in 17.2 g of ammonium sulfate, so now we can replace the data that we have if we solve for 'liters of solution', like this:

Remember that 1 L equals 1000 mL, so the conversion from 0.02 L to mL is:

The answer would be that we need 0.02 L (20 mL) of ammonium sulfate solution to apply to the piece of land.