What is the mass of 10.0 mol CH2O2?
10.0 mol CH₂O2 46.03 g CH₂O₂
1 mole CH₂O2
[?] g CH₂O2

The molality ( of the solute) and the freezing point depression constant of the solvent. Option A

The freezing point is the temperature at which a liquid becomes a solid. At the freezing point, the particles in a liquid slow down and begin to arrange themselves in a repeating pattern, forming a solid. The temperature at which a particular substance freezes is called its freezing point and is dependent on the pressure and the purity of the substance.

For pure substances, the freezing point is a constant and is characteristic of that substance.

Learn more about freezing point: https://brainly.com/question/3121416

#SPJ1

Missing parts;

To calculate the freezing point of an ideal dilute solution of a single,nondissociating solute of a solvent,the minimum information one must have is: A. The molality ( of the solute) and the freezing point depression constant of the solvent. B. The same quantities as in b plus the freezing point of the pure solvent. C. All of the quantities in c plus the weight of the solvent. D. The molality ( of the solute).E. All of the quantities in c plus the molecular weight in the solute.

Answer: A

Explanation: Beta particles have a charge of -1

The first wave appear after 320 seconds and after the arrival of P wave

We can use the formula TD = d × t / 100 km

TD = d × t / 100 km

= ( 4000 km × 8 s ) / 100 km

= 32000 km /s / 100 km

= 320 seconds

The first s-wave will arrived in 320 seconds after the arrival of the first p-wave

The earliest waves to reach a seismograph are known as P waves, or primary waves. The fastest seismic waves, known as P waves, can pass through solid, liquid, or gas. On the medium they travel through, they leave a trail of compressions and rarefactions

The second waves to arrive during an earthquake are called S waves, or secondary waves. They can only pass through solids and are substantially slower than P waves

to learn more about waves:

https://brainly.com/question/3639648

#SPJ4

The Omnipotent view of management refers to the belief that managers are directly responsible for an organization's success or failure. According to this view, managers have the power and control to make decisions that will significantly impact the organization's performance.

In terms of the organizational environment, ABC CO needs to focus on several aspects. Firstly, it should prioritize building strong relationships with customers by understanding their needs and delivering value through its products or services. Secondly, maintaining good relationships with suppliers is crucial to ensure a reliable supply chain and access to necessary resources. Thirdly, keeping a close eye on competitors is essential to stay competitive and identify opportunities for differentiation. Lastly, monitoring and adapting to economic, legal, and socio-cultural factors is vital to ensure compliance with regulations and aligning the organization with societal trends and expectations.

In conclusion, the Omnipotent view of management emphasizes the influence of managers in shaping organizational outcomes, while the Symbolic view recognizes the significance of external factors. For the current state of ABC CO, a balanced approach that considers both internal and external factors would be beneficial. The culture should promote collaboration, innovation, and adaptability, while the organization should focus on building strong relationships with customers, suppliers, and competitors while adapting to the economic, legal, and socio-cultural environment.

To know more about power  Visit;

https://brainly.com/question/13931313

#SPJ11

Answer:

About 277 Kelvin

Explanation:

Take the celcius, and add 273.15 to it

4°C + 273.15 = 277.15K

And round the answer to the nearest whole

277.15K ≈ 277K

Taking into account the definition of calorimetry, sensible heat and latent heat,  the heat of fusion of water is 335.091 \(\frac{J}{g}\) .

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

Latent heat is defined as the energy required by a quantity of substance to change state.

When this change consists of changing from a solid to a liquid phase, it is called heat of fusion and when the change occurs from a liquid to a gaseous state, it is called heat of vaporization.

In this case:

In firts place, you know that the melting point of water is 0°C. So, first of all you must increase the temperature from -25° C (in solid state) to 0 ° C, in order to supply heat without changing state (sensible heat).

The amount of heat a body receives or transmits is determined by:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Replacing:

Q1= 2.03\(\frac{J}{gC}\) × 49.3 g× 25 °C

Solving:

Q1=2501.975 J=2.501975 kJ≅ 2.50 kJ

The heat Q that is necessary to provide for a mass m of a certain substance to change phase is equal to

Q = m×L

where L is called the latent heat of the substance and depends on the type of phase change.

In this case, you know:

Replacing:

Q2= 49.3 g× ΔHfus

Similar to sensible heat previously calculated, you know:

Replacing:

Q3= 4.18\(\frac{J}{gC}\) × 49.3 g× 44.7 °C

Solving:

Q3= 9211.5078 J=9.2115078 kJ≅ 9.21 kJ

The total heat required is calculated as:

Total heat required= Q1 + Q2 + Q3

Total heat required= 2.50 kJ + 49.3 g× ΔHfus + 9.21 kJ

Heating a 49.3 g sample of g ice from -25.0 °C to water at 44.7 °C requires 28.23 kJ of heat. This is, the total heat required is 28.23 kJ. Then:

28.23 kJ= 2.50 kJ + 49.3 g× ΔHfus + 9.21 kJ

Solving:

28.23 kJ= 11.71 kJ + 49.3 g× ΔHfus

28.23 kJ- 11.71 kJ = 49.3 g× ΔHfus

16.52 kJ = 49.3 g× ΔHfus

16.52 kJ ÷ 49.3 g= ΔHfus

0.335091\(\frac{kJ}{g}\)= 335.091 \(\frac{J}{g}\) =ΔHfus

In summary, the heat of fusion of water is 335.091 \(\frac{J}{g}\) .

Learn more:

Answer:

1 gram=0.1 decagram.

Formula:

Divide the mass value by 10

The hazardous substance in automobile exhaust that is also present in high concentration in tobacco smoke is acrolein.

Substance that tobacco smoke and the exhaust of automobiles contains a has it is substance called acrolein in very very high concentration.

Inhaling acrolein can give rise to several breathing problems like shortness in breathing and also irritation in lungs.

Acrolein is formed when the fats are overheated apart from automobiles and tobacco a very low amount of acrolein is also found in over used cooking oil.

To reduce acrolein from the automobile exhaust lead based adsorption substances are preferred to be used in automobile exhaust.

To know more about acrolein, Visit,

https://brainly.com/question/6224949

#SPJ4

Fresh water is a limited resource. If we pollute the fresh water we have, there will be a shortage of clean drinking water in the future.

The 2.07 moles of oxygen gas and 25.0 mL of water are produced from the decomposition of 50.0 mL of the 30.0% by volume H2O2 solution.

To determine the number of moles of oxygen gas produced from the decomposition of the 30.0% by volume H2O2 solution, we need to convert the volume of the solution used into moles.

First, calculate the mass of the H2O2 solution used by multiplying its volume (50.0 mL) by its density (1.407 g/mL). This gives us 70.35 g of H2O2.

Next, convert the mass of H2O2 into moles by dividing it by its molar mass (34.0147 g/mol). This gives us approximately 2.07 moles of H2O2.

From the balanced chemical equation, we know that for every mole of H2O2, one mole of O2 is produced. Therefore, the number of moles of oxygen gas produced is also approximately 2.07 moles.

To find the volume of water produced, we need to assume that the density of water is 1 g/mL. Since the molar ratio between H2O2 and water is 2:1, the volume of water produced is half the volume of H2O2 used. Therefore, the volume of water produced is approximately 25.0 mL.

In summary, approximately 2.07 moles of oxygen gas and 25.0 mL of water are produced from the decomposition of 50.0 mL of the 30.0% by volume H2O2 solution.

To know more about moles visit:-

https://brainly.com/question/15209553

#SPJ11

The physical mechanism causing the change in strength when using brine as the pore fluid is the presence of salt ions that weaken the interparticle bonds. Salt can reduce the shear strength of clays by increasing the repulsive forces between clay particles.

The strength of clay types at 50% water content can vary depending on whether DI water or brine is used as the pore fluid. Generally, there is a significant difference in strength between the two.

The presence of salt in brine can have an effect on the shear strength of clays. When salt is dissolved in water, it creates ions that can interact with the clay particles. These interactions can lead to the formation of electrical double layers around the clay particles, which can increase the interparticle repulsion and decrease the shear strength of the clay.

On the other hand, when DI water is used as the pore fluid, there is no presence of salt ions to affect the interparticle interactions. As a result, the clay particles can have stronger bonds and higher shear strength compared to when brine is present.

Learn more about interparticle bonds here :-

https://brainly.com/question/4339576

#SPJ11

Answer: from what i can tell it looks like a heterogeneous mixture

Explanation:

heterogeneous is multiple different components, homogenous includes only the same component

Answer:

Very reactive metals, such as aluminium, form stable oxides and other compounds. Electrolysis is commonly used to extract these metals and requires a lot of electric current (energy) to reduce them to extract the metal. Less reactive metals, such as iron, form less stable oxides and other compounds.

Explanation:

Brainliest please?

Electrolysis is the strategy by which electric flow is gone through a substance to impact a synthetic change.

This method is used to extract metals.

Electrolysis is the process in which electrons are being added to metal particles at the negative electrode. The disadvantage (especially in the aluminum case) is the expense of the power. A benefit is that it can deliver extremely unadulterated metals.

Find more information about Electrolysis here:

brainly.com/question/25712870

Explanation:    The relocation of organisms across geographical boundaries occurs naturally by various means. Since humans began exploring the globe, however, the rate of new species being introduced into regions has greatly increased. In some cases, humans have dispersed species on purpose; for instance, many plants were transported from Europe to North America for agricultural and ornamental purposes. Others were transported accidentally by ship, train, airplane - even on the shoes of hikers.

     Some species may be introduced and not be able to survive in their new habitat. Others may find optimal conditions for growing, reproducing, and adapting to the new environment, and their populations soar. For instance, lack of predators may contribute to their rapid population increases.

Diffusion is essentially the movement of molecules from a region of higher concentration to a region of lower concentration.

As a result of thermal motion. Diffusion is an important process in human physiology. Specifically, diffusion is the mechanism of movement of oxygen, nutrients and other molecules across the capillary walls and the movement of other molecules across membranes.

What is a diffusion example?

When perfume is sprayed in one area of a room, it quickly diffuses to fill the entire space with its scent. When a drop of food coloring is added to water in a glass, the water gradually becomes colored until the entire glass is that color.

What causes a diffusion?

The kinetic energy of the molecules results in random motion, causing diffusion. In simple diffusion, this process proceeds without the aid of a transport protein. it is the random motion of the molecules that causes them to move from an area of high concentration to an area with a lower concentration.

What are the 3 types of diffusion?

The three types of diffusion are - simple diffusion, osmosis and facilitated diffusion.

(i) Simple diffusion is when ions or molecules diffuse from an area of high concentration to an area of low concentration.

(ii) In osmosis, the particles moving are water molecules.

(iii) Facilitated diffusion is the movement of hydrophilic molecules or ions across the plasma membrane.

To learn more about Diffusion visit:

https://brainly.com/question/29787215

#SPJ4

The combustion of butane in oxygen (air) is represented in the  balanced chemical equation as 2 C₄H₁₀ + 13 O₂\(\rightarrow\) 8 CO₂ + 10 H₂O.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

Learn more about chemical equation,here:

https://brainly.com/question/28294176

#SPJ9

Your question is incomplete but most probably your full question was:The combustion of butane in oxygen (air) is represented in the equation 2 C₄H₁₀ + 13 O₂\(\rightarrow\)

The mass of magnesium cyanide needed to prepare the solution is 1.57 g

We'll begin by calculating the number of mole of Mg(CN)₂. This can be obtained as follow:

Volume = 275 mL = 275 / 1000 = 0.275 L

Molarity of Mg(CN)₂ = 0.075 M

Mole = Molarity x Volume

Mole of Mg(CN)₂ = 0.075 × 0.275

Mole of Mg(CN)₂ = 0.020625 mole

Mole of Mg(CN)₂ = 0.020625 mole

Molar mass of Mg(CN)₂ = 24 + 2(12 + 14) = 76 g/mol

Mass = mole × molar mass

Mass of Mg(CN)₂ = 0.020625 × 76

Mass of Mg(CN)₂ = 1.57 g

Therefore, 1.57 g of Mg(CN)₂ is needed to prepare the solution

Learn more: https://brainly.com/question/3126258

The device that is most famously used to find the molecular weight of a compound is a mass spectrometer.

A mass spectrometer is an analytical instrument that is used to measure the mass-to-charge ratio of charged particles. It works by ionizing a sample of the compound, accelerating the ions, and then measuring their masses using a magnetic or an electric field. The resulting mass spectrum can be used to determine the molecular weight of the compound, as well as its elemental composition and isotopic distribution. Mass spectrometry is widely used in chemistry, biochemistry, and other fields to identify and quantify molecules, and it is considered one of the most accurate and precise methods for determining molecular weight.

To learn more about molecular weight visit: https://brainly.com/question/24258041

#SPJ4

Answer:

1. We get the symbol and formulas of the reactants and products.

2. The physical state of the reactants and products.

3. From this reaction, we can know the molecular formula of ammonia, water and nitrogen.

4. Here all the species are in a gaseous state.

5. The reaction takes place at a high temperature and pressure.

6. Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas. This equation is written as:

Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas. This equation is written as: Zn+H2SO 4→ZnSO 4 +H2.

Answer:

its either b or d

To get 120 gallons of a solution that is 50% acid, the chemist should mix 60 gallons of the 20% acid solution with 60 gallons of the 65% acid solution.

To determine the quantities of the two solutions needed, we can set up an equation based on the acid content and the total volume of the solution. Let's assume x represents the amount (in gallons) of the 20% acid solution and y represents the amount (in gallons) of the 65% acid solution.

Since the total volume of the final solution is 120 gallons, we have the equation:

x + y = 120   --- Equation 1

Next, we need to consider the acid content in the mixture. The acid content in the 20% acid solution is 20% of x, while the acid content in the 65% acid solution is 65% of y. The acid content in the final solution should be 50% of the total volume (120 gallons), so we have another equation:

(20/100) * x + (65/100) * y = (50/100) * 120   --- Equation 2

Simplifying Equation 2, we get:

0.2x + 0.65y = 60   --- Equation 3

Now, we can solve the system of equations formed by Equations 1 and 3 to find the values of x and y.  By solving the equations, we find that x = 60 and y = 60. This means that the chemist should mix 60 gallons of the 20% acid solution with 60 gallons of the 65% acid solution to obtain 120 gallons of a solution that is 50% acid.

Therefore, the chemist should mix 60 gallons of the 20% acid solution with 60 gallons of the 65% acid solution to obtain the desired solution.

Learn more about acid

brainly.com/question/29796621

#SPJ11

The empirical formula of the compound is C10H6N2.A compound contains only carbon (C), hydrogen (H), and nitrogen (N). Combustion of 42.0 mg of the compound produces 40.2 mg CO2 and 49.3 mg H2O.Find the empirical formula of the compound.

We need to calculate the amount of carbon, hydrogen, and nitrogen in the given compound.The amount of carbon in 40.2 mg of CO2 (carbon dioxide) is:

40.2 mg CO2 × (1 mol CO2 / 44.01 g CO2) × (1 mol C / 1 mol CO2) × (12.01 g C / 1 mol C)

= 10.8 mg C

The amount of hydrogen in 49.3 mg of H2O (water) is:

49.3 mg H2O × (1 mol H2O / 18.02 g H2O) × (2 mol H / 1 mol H2O) × (1.01 g H / 1 mol H)

= 5.50 mg H

Now, calculate the amount of nitrogen by subtracting the total mass of carbon and hydrogen from the mass of the given compound:

42.0 mg - 10.8 mg - 5.50 mg

= 25.7 mg NN

= 25.7 mg / 14.01 g/mol

= \(1.83 × 10⁻³ mol N\)

To find the empirical formula, divide the number of moles of each element by the smallest number of moles (the limiting reactant). In this case, the smallest number of moles is the number of moles of nitrogen (N), so we'll divide the number of moles of carbon and hydrogen by this value.

C =\((10.8 mg / 12.01 g/mol) / 1.83 × 10⁻³ mol\)

≈ 4.93H

=\((5.50 mg / 1.01 g/mol) / 1.83 × 10⁻³ mol\)

≈ \(3.02N = (1.83 × 10⁻³ mol) / 1.83 × 10⁻³ mol\)

= 1

The empirical formula of the compound is C4.93H3.02N. However, empirical formulas should have whole number subscripts, so we'll multiply all the subscripts by a factor to make them whole numbers.

C4.93H3.02N × (1/0.0142)

≈ C10H6N2

Therefore, the empirical formula of the compound is C10H6N2.

To know more about C10H6N2 visit :

https://brainly.com/question/3495064

#SPJ11

Answer:

Explanation:

O2

The carbon-carbon bonds where rotation can occur on 2-methylhexane are the C-1−C-2 bond, C-2−C-3 bond, and C-5−C-6 bond.

Rotation is possible around single bonds, and in 2-methylhexane, these bonds are all single bonds. The C-1−C-2 bond, C-2−C-3 bond, C-4−C-5 bond, and C-5−C-6 bond are all single bonds, allowing for free rotation. On the other hand, the C-2−C-7 bond is not present in 2-methylhexane and therefore rotation cannot occur on that specific bond.

In 2-methylhexane, rotation can occur around the following carbon-carbon bonds:

C-1−C-2 bond: Yes, rotation can occur around this bond.

C-2−C-3 bond: Yes, rotation can occur around this bond.

C-4−C-5 bond: No, rotation cannot occur around this bond because it involves the methyl group attached to the second carbon, which creates a hindered rotation.

C-5−C-6 bond: Yes, rotation can occur around this bond.

C-2−C-7 bond: No, rotation cannot occur around this bond because it involves the methyl group attached to the second carbon, which creates a hindered rotation.

To learn more about 2-methylhexane

https://brainly.com/question/16945061

#SPJ11

Answer:

B: They released acids to help break down bare rock to form soil.

Answer:

B. They release acids that help break down bare rock to form soil.

Explanation:

Quiz Verified

Answer:

An exothermic reaction

Explanation:

Answer:

Explanation:yo what is you talkin about

Answer:

1) adding a safety switch that automatically turns off the heater when it reaches a certain temperature

2) incorporating reflective material around the heating element to increase heat output.

Explanation:

chatgpt

Answer:

utcluclult

Explanation:

ciyiclyipc6ycpicyplciplcylpycioiycciptclyltcj"<&%(""%<(

Answer:

no WAYYYYYYY ITS SO EASY!!111!11

Explanation:

Answer:

IT IS A C D I GOT IT WRONG FROM THE ANSWER ON TOP OF ME

Explanation: