Convert 12.044×10²² molecules of sulphur dioxide into moles​

The mass of sodium nitrate that must be added to saturate the solution at 50°C would be 14 grams.

The solubility of a compound typically increases with temperature, so more solute can dissolve in the solvent as the temperature increases. To calculate how much sodium nitrate needs to be added to saturate the solution at 50°C, we can use the solubility data and the fact that the amount of solute that can dissolve in a given amount of solvent is dependent on the temperature.

First, let's calculate the solubility of sodium nitrate at 50°C. According to the solubility curve for NaNO3, the solubility of NaNO3 at 35°C is 88 g/100 mL, and at 50°C it is approximately 114 g/100 mL. Therefore, we know that a saturated solution at 50°C can dissolve up to 114 g of NaNO3 per 100 mL of water.

Since the original solution contains 100 g of NaNO3 in 100 mL of water at 35°C, we know that it is already saturated at that temperature. To calculate how much more NaNO3 we need to add to saturate the solution at 50°C, we can use the following equation:

mass of NaNO3 added = (desired amount of NaNO3) - (initial amount of NaNO3)

mass of NaNO3 added = (114 g/100 mL × 100 mL) - (100 g/100 mL × 100 mL)

mass of NaNO3 added = 14 g

Therefore, we need to add 14 grams of sodium nitrate to the solution at 50°C to saturate it.

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Answer:

It's oxygen, nitrogen forms several oxides, including nitrous oxide.

Explanation:

Hope this helps you out for sure!

Answer:

\($Cu_2+(SO_3)^2 \rightleftharpoons CuSO_3 \ (insoluble)$\)

\($Cu_2+2(SO_3)^2 \rightleftharpoons [Cu(SO_3)_2]_2 \ (soluble)$\)

Explanation:

A ligand may be defined as a molecule or an ion or that binds to the central metal atom in order to form a more coordination complex. Sulfite is one such ligand and it behaves similarly as hydroxide as a ligand.

Now, according to the question, when we react copper with sulfite ion, it forms copper sulfite. The equation is

\($Cu_2+(SO_3)^2 \rightleftharpoons CuSO_3 \ (insoluble)$\)

Now when excess of the sulfite ion is used in the reaction, we get a complex formation, which is shown by

\($Cu_2+2(SO_3)^2 \rightleftharpoons [Cu(SO_3)_2]_2 \ (soluble)$\)

The way the sulfite reacts is quite similar to hydroxide ion where they form a complex ion when hydroxide ion in excess is used in the reaction with metal cation.

Answer:  28.2 g of ²⁶Mg can be isolated from the 9.87 mole sample of natural magnesium

Explanation:

we know that natural abundance of ²⁶Mg is 11.01 %

therefore moles of ²⁶Mg isolated from 9.87 mole sample of natural magnesium will be :

( 11.01 x 9.87 mol) / 100  = 1.09 mol

so

mass of ²⁶Mg = mol x molar mass

⇒ 1.09 mol x 25.9826 g/mol

= 28.2 g

Therefore 28.2 g of ²⁶Mg can be isolated from the 9.87 mole sample of natural magnesium

The structure of fatty acids involves long carbon-based chains with a carboxyl group (―COOH) located in the end, triglycerides phospholipids contain a phosphate group and glycerol, while steroids are cyclic and they contain C atoms linked via 4 fused rings.

Lipids are a broad category of biomolecules that include fatty acids, triglycerides phospholipids, and steroids. For example, fatty acids are long carbonated chains that contain exactly identical CH2 groups in the interior of the molecule and a carboxyl group (―COOH) located at one extreme side.

Triglycerides phospholipids are composed of three fatty acids chains linked to a glycerol backbone and also a phosphate group that may confer polar properties to the molecule.

Finally, steroids are another important class of lipids composed of several carbon-based fused rings.

Therefore, we can conclude that fatty acids, triglycerides phospholipids, and steroids are structurally different lipids that are mainly composed of carbon-based structures.

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Answer:

C(btw this could be wrong)

Explanation:

Answer:

B is the answer

Explanation:

Answer:

In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases of that substance coexist in thermodynamic equilibrium. It is that temperatureand pressure at which the sublimation curve, fusion curve and vaporisation curve meet.

Answer:

At the triple point, all three phases (solid, liquid, and gas) are in equilibrium. Since the triple point is a point, there is only one temperature and one pressure where the three phases will exist. This fact often helps in identifying compounds or in problem solving.

Answer: 71.43 M.

Explanation: To calculate the molarity of a solution, we divide the number of moles of solute by the volume of the solution in liters. The volume of the solution in this case is given in milliliters, so we need to convert it to liters before we can calculate the molarity.

35 mL = 0.035 L (since 1 mL = 0.001 L)

So, the molarity of the solution can be calculated as follows:

Molarity = moles of solute / volume of solution in liters

Molarity = 2.50 moles / 0.035 L

Molarity = 71.43 M

Therefore, the molarity of the solution is 71.43 M.

6.02 x10^23 atom  

3.5g x 1mol/63.55g Cu x 6.02 x 10^23/ 1mol=

3.32 x 10^22 atoms

The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.

Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.

Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.

It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.

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Answer:

0.00152 km

Explanation:

The easiest way to complete the conversion is by (1) converting cm to m and then (2) converting m to km. It is important to arrange the conversions in a way that allows for the cancellation of units.

1,000 m = 1 km

100 cm = 1 m

152 cm             1 m                 1 km
-------------  x  --------------  x  ----------------  =  0.00152 km
                      100 cm          1,000 m

\(\large\displaystyle\text{$\begin{gathered}\sf So \to \ \ 152\not{cm}*\frac{1 \ km}{100,000\not{cm}}=0.00152 \ km \end{gathered}$}\)

Answer:Therefore, the measurement of the object in km is: 0.00152 Kilometers.

I hope my answer is useful to you

If an element has three valence electrons, it is most likely a metal.

In the periodic table, metals are found towards the left hand side of the table. Metals have fewer valence electrons than nonmetals. In the periodic table, there are more metallic than nonmetallic elements.

Metals of group 13 typically have three valence electrons. Hence, if an element has three valence electrons, it is most likely a metal of group 13.

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Answer:

I'm doing this in 10th grade right now

Explanation:

Answer:

c thats just what i do

Explanation:

Answer:

1 mol contains 6.02 x 10^23 molecules. So 0.25 mols will contain 0.25 x 6.02 x 10^23 molecules.

Explanation:

i hope this helps!!!

Answer:

The awnser is C. Hope that helps!!!

Answer:

CH3CH2C≡CH

Explanation:

The particular reaction under study is known as the alkykation of acetylide ions. An acetylide ion can be alkykated using a suitable alkyl halide. The overall scheme of the reaction is;

CH≡C^- + RX -----> RC≡CH + X^-

This reaction is most effective when primary alkyl halides are used. It involves SN2 substitution of a halide in the alkyl halide by an acetylide ion. Secondary, tertiary or even bulky primary substrates are known to yield alkenes and alkynes owing to elimination by E2 mechanism.

Answer:

To resolve this, we need to place the coefficient “2” in front of the sodium in the reactant, to give the equation shown below. 2 Na (s) + Cl 2 (g) → 2 NaCl (s) In this equation, there are two sodiums in the reactants, two sodiums in the products, two chlorines in the reactants and two chlorines in the products; the equation is now balanced.

Explanation:

Answer:

helium

Explanation:

remaining three are efficient gas

Among the options given below, helium is not an efficient greenhouse gas. Thus, the correct option for this question is A.

Greenhouse gases are those gases that significantly allow solar radiation in order to enter but prevent the escape of heat radiations of longer wavelengths. The names of common greenhouse gases are carbon dioxide, methane, nitrous oxide, CFCs, etc.

According to the context of this question, the presence of these gases in the atmosphere is responsible for the phenomenon of keeping the earth warm. This is known as Greenhouse effect. These gases stimulate the phenomenon of global warming.

Therefore, among the options given below, helium is not an efficient greenhouse gas. Thus, the correct option for this question is A.

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Answer: $582.47

Explanation:

Convert $4.64 per lb to $ per gallon. That would equal around $37.10. Multiply that by 15.70 gallons of strawberries and you'll get $587.47.

15.70 gallons of strawberries would cost approximately $365.40.

To determine the cost of 15.70 gallons of strawberries, we need to convert the volume from gallons to pounds and then multiply by the cost per pound.

First, we need to know the conversion factor between gallons and pounds for strawberries. This conversion factor depends on the density or specific gravity of strawberries, which can vary. Without this information, it is not possible to accurately convert gallons to pounds.

If we assume an average conversion factor of 1 gallon of strawberries weighing approximately 5 pounds, we can estimate the cost. However, please note that this is an approximation and the actual weight of strawberries per gallon may vary.

15.70 gallons * 5 pounds/gallon * $4.64/pound = $365.40

Therefore, based on the approximation, 15.70 gallons of strawberries would cost approximately $365.40.

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The balanced equation is: 4 \(H_2S\)+ 3 \(O_2\)→ 4 \(SO_2\)+ 8 \(H_2O\)

The given chemical equation is unbalanced. To balance it, we need to adjust the coefficients in front of each chemical species until the number of atoms on both sides of the equation is equal.

The unbalanced equation is:

2 \(H_2S\)+ 3 \(O_2\)→ \(SO_2\)

Let's start by balancing the sulfur (S) atoms. We have two sulfur atoms on the left side and one sulfur atom on the right side. To balance the sulfur, we can place a coefficient of 2 in front of the \(SO_2\):

2 \(H_2S\)+ 3 \(O_2\)→ 2 \(SO_2\)

Now, let's balance the hydrogen (H) atoms. We have four hydrogen atoms on the left side (2 from each \(H_2S\)) and none on the right side. To balance the hydrogen, we can place a coefficient of 4 in front of the water (H2O) on the right side:

2 \(H_2S\)+ 3 \(O_2\)→ 2 \(SO_2\)+ 4 \(H_2O\)

Finally, let's balance the oxygen (O) atoms. We have six oxygen atoms on the right side (3 from \(O_2\) and 3 from 2 \(SO_2\)) and three on the left side (2 from \(H_2S\)). To balance the oxygen, we can place a coefficient of 3/2 in front of the O2:

2 \(H_2S\)+ (3/2) \(O_2\)→ 2 \(SO_2\)+ 4 \(H_2O\)

To remove the fractional coefficient, we can multiply all coefficients by 2:

4 \(H_2S\) + 3 \(O_2\)→ 4 \(SO_2\)+ 8 \(H_2O\)

Now the equation is balanced, with an equal number of atoms on both sides. The balanced equation is:

4 \(H_2S\)+ 3 \(O_2\)→ 4 \(SO_2\)+ 8 \(H_2O\)

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Answer:

Explanation:

Discussion

When Pressure increases  equilibrium shifts to the side with the smallest number of moles. But which side is that?

N2(g) + 3H2(g) ⇌ 2NH3(g)

The left side has 1 mol of nitrogen (N2) and 3 moles of Hydrogen = 4 mols

on the left side.

The right side has 2 mols of NH3 = 2 mols on the right.

Conclusion: You tell the number of mols by the Balance numbers to the left of each chemical in an equation.

Since the left side N2 + 3H2 = 4 mols, the equilibrium does NOT shift left.

2NH3 is only two mols.

The equilibrium shifts Right

Answer

D

Answer:

1. 25 moles water.

2. 41.2 grams of sodium hydroxide.

3. 0.25 grams of sugar.

4. 340.6 grams of ammonia.

5. 4.5x10²³ molecules of sulfur dioxide.

Explanation:

Hello!

In this case, since the mole-mass-particles relationships are studied by considering the Avogadro's number for the formula units and the molar mass for the mass of one mole of substance, we proceed as shown below:

1. Here, we use the Avogadro's number to obtain the moles in the given molecules of water:

\(1.5x10^{25}molecules*\frac{1mol}{6.022x10^{23}molecules} =25 molH_2O\)

2. Here, since the molar mass of NaOH is 40.00 g/mol, we obtain:

\(1.2mol*\frac{40.00g}{1mol} =41.2g\)

3. Here, since the molar mass of C6H12O6 is 180.15 g/mol:

\(45g*\frac{1mol}{180.15g}=0.25g\)

4. Here, since the molar mass of ammonia is 17.03 g/mol:

\(20mol*\frac{17.03g}{1mol}=340.6g\)

5. Here, since the molar mass of SO2 is 64.06 g/mol:

\(48g*\frac{1mol}{64.06g} *\frac{6.022x10^{23}molecules}{1mol} =4.5x10^{23}molecules\)

Best regards!

Answer:

1) easy compressed

2) fills its container

3) far more space

Explanation:

Answer:

Random samples

Explanation:

It needs to be random so that there isn't bias that would skew the consistency

Scientific evidence is most likely to be consistent if it is based on the data from small data samples.

What is scientific evidence ?

The informations gathered through scientific researches are called scientific evidences. Through systematic analysis, a student or sceintist arrive at a valuable information.

Sampling is a significant step in scientific research, there must not be any bias and proper way has to be designed to collect data samples. If we use random sampling , the the researcher might not approach the better way of experimentation. Similarly experiments and assumption made based on bias will leads to systematic error. Only controlled and well-designed experiments results in good outcomes.

Hence, option D , that is to use small data samples make scientific evidence to be consistent.

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