helpp!!
how much energy is required to heat up 100.0 grams of water from 0.000C to 60.00C?

The mass of NaHCO₃ needed to produce 2.659 moles of CO₂ is 446.712 g

We'll begin by writing the balanced equation for the reaction. This can be obtained as follow:

2NaHCO₃ —> Na₂CO₃ + CO₂ + H₂O

Molar mass of NaHCO₃ = 23 + 1 + 12 + (16×3)

= 84 g/mol

Mass of NaHCO₃ from the balanced equation = 2 × 84 = 168 g

From the balanced equation above,

168 g of NaHCO₃ decomposed to produce 1 mole of CO₂.

With the above information, we can obtain the mass of NaHCO₃ needed to produce 2.659 moles of CO₂. This can be obtained as follow:

From the balanced equation above,

168 g of NaHCO₃ decomposed to produce 1 mole of CO₂.

Therefore,

Xg of NaHCO₃ will decompose to produce 2.659 moles of CO₂ i.e

Xg of NaHCO₃ = 168 × 2.659

Xg of NaHCO₃ = 446.712 g

Thus, 446.712 g of NaHCO₃ is needed to produce 2.659 moles of CO₂.

Learn more: https://brainly.com/question/15310350

Answer:

40.5 g/mL

Explanation:

Density is a measure of a substance's mass over its volume.

d = m/v

Therefore d = 255.15g/6.3mL = 40.5 g/mL

Ohm's Law states that for a linear circuit the current flowing through it is proportional to the potential difference across it so the greater the potential difference across any two points the bigger will be the current flowing through it.

(I'm happy)

Answer:

5150 kPa

Explanation:

Given that,

Initial volume, V₁ = 100 mL

Initial pressure, P₁ = 103 kPa

Final volume, V₂ = 2 mL

We need to find the new pressure of the gas. The relation between the pressure and the volume of gas is given by :

[tex]P_1V_1=P_2V_2\\\\P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{103\times 100}{2}\\\\P_2=5150\ kPa[/tex]

So, the new pressure is 5150 kPa.

The correct option is option D. The water and metal will adjust to the same temperature between 10°C and 120°C.

In nature, everything always flows from high to low because of the presence of a gradient.

Temperature simply gives the degree of hotness of a body. More the temperature of a body, more the heat/heat energy it possesses.

Since the temperature of the metal object is high, it has more heat energy as compared to water which is at a lower temperature.

Therefore, when the metal object and water comes in contact, the heat flows from the metal to the water. As the object is losing heat, it's temperature reduces and since the heat is flowing to the water, it's temperature rises.

There will come a point where the temperature of both, the metal object as well as water will become constant. At this stage the flow of heat will stop as there's no difference in their temperatures.

Therefore, the correct option is option D. The water and metal will adjust to the same temperature between 10°C and 120°C.

To learn more on heat flow, click on

https://brainly.com/question/16951586

#SPJ2

Answer:

7 is da answer

Explanation:

Eeeeeeeyuhgjbyjvunhi

Answer:

it is 6.941 atomic mass units

Explanation:

Answer:

carbonic acid in water dissolving limestone

hope this ans helps

have a great day

Answer:

 310.1 J/mol * K

Explanation:

since entropy increases with increasing molecular complexity The Value of s ( entropy ) for Butane, C4H10 will be

= 310.1 J/mol * K

Given that :

Methane ( CH4 ) = 186.3 J/mol*K

Ethane ( C2H6 ) = 229.6 J/mol*K

propane ( C3H8 ) = 270.3 J/mol*k

Answer:

The law of floatation is applied in all vessels which travel by waterways that include ships, submarines and ferry boats. It is also applied in some vessels which travel by air ways such as hot air balloon and air ship. Balloons of different colors and shapes are filled with lighter gas so that will float in air.

Answer:

*hot air balloon

*swimming

Explanation:

sna makatulong po:)

Answer:

C

Explanation:

When a line segment and a plane intersect, they intersect at a point. They both coincide on point C

Answer:

Welcome

Explanation:

10 - 7.93 = 2.07 g of H2O

2.07 g / 18.015 g/mol = 0.1149 mol of H2O

7.93 g / 138.204 g/mol = 0.057379 mol of K2CO3

0.1149 mol / 0.057379 mol = 2

Answer:In regards to writing the formula, we know that magnesium has a charge of 1+ and sulfate, SO4, has a charge of 1-. Sulfate is a polyatomic ion so the charge of the whole thing is (SO4)1-. When you combine them you end up with MgSO4 and the "heptahydrate" is seven water molecules.

Explanation:

Answer:

Iduno sorry po hsjsnaka

Answer:

why would u want 2?

Explain in the comments why.

Answer: cashier

Explanation: because

Answer:

equal to - it's opposite but equal energy is the third law

Answer:

b. d. f. h

Explanation:

Anions are negatively charged. They are usually non metals with few exceptions. They need to gain electrons in order to form and they are always listed after cation in a compound.

Explanation:

"pure water does not conduct electricity. But some tap water probably can."

The reason why pure water does not conduct electricity is due to the absence of mineral and metal containing salts. Pure water is made up of only Hydrogen and oxygen atom as represented by the formula; H2O

Tap water on the other hand are most likely able to conduct electricity due to the presence of these ions. They may arise from impurities or during treatment processes.

The correct options are;

b . Pure water is H2O

c . Some tap water has minerals, such as iron in it.

Explanation:

Flow-duration data are daily mean flow values measured over a specified time interval that have been exceeded various percentages of the specified time interval.

Water is a very flexible material. It can flow in many different directions and shapes. This flexibility makes it great for many different purposes, such as drinking, washing, and irrigation. Water is considered to be a flexible substance because it can change its shape according to space.

Water is a liquid at standard temperature and pressure (25 degrees Celsius and 1 atm, for liquids).

Water is is tasteless and odorless.

Water is transparent in the visible part of the electromagnetic spectrum.

Water can act as either an acid or a base.

Water is a universal solvent, dissolving many substances found in nature.

Water is the most abundant compound on Earth’s surface. In nature, water exists in the liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at 0 degrees Celsius and 1 atm of pressure. At room temperature (approximately 25 degrees Celsius), it is a tasteless, odorless, and colorless liquid. Many substances dissolve in water, and it is commonly referred to as the universal solvent.

Therefore, Water is a very flexible material. It can flow in many different directions and shapes. This flexibility makes it great for many different purposes, such as drinking, washing, and irrigation. Water is considered to be a flexible substance because it can change its shape according to space.

Learn more about water, here:

https://brainly.com/question/28465561

#SPJ2

Answer:

Temperature is a measure of the average kinetic energy of the particles in an object. When temperature increases, the motion of these particles also increases. (That should give you the answer if you read closely first sentence)

Answer:

hello

Explanation:

second option is correct answer

Answer:

the one above is not right

Explanation:

Awnser your loooking fo its got to be aluminium

Explanation:i took the dang subgect

Answer:

cell wall and chloroplasts

Explanation:

Answer and Explanation:

Dado que la capa de ozono protege la vida en la Tierra actuando como filtro de radiaciones nocivas del Sol, su destrucción trae como consecuencia un aumento de la radiacion UV que puede provocar:

- daños en animales y en el hombre: aumento de casos de cáncer de piel, cataratas en ojos, debilitamiento del sistema inmune.

- alteración en el desarrollo de especies vegetales .

- contribución al efecto invernadero y al calentamiento global.

Para revertir el deterioro de la capa de ozono, podemos tomar algunas medidas:

- no utilizar productos que contengan clorofluorocarbonos (CFC), como por ejemplo algunos aerosoles.

- evitar el uso de productos que contengan halones

- evitar el uso de hidrofluorcarbonos (HFCF)

Estos compuestos químicos reaccionan y destruyen el ozono, por lo que si evitamos utilizarlos, con el tiempo la capa de ozono se recuperará.

Answer:

The frecuency is 400 Hz.

Explanation:

In a periodic wave the wavelength is the physical distance between two points from which the wave repeats itself. It is named by (λ). That is, the wavelength is the minimum distance between two points on the wave that are in the same state of vibration.

Frequency is represented by the letter f, and is the number of vibrations that occur in a unit of time. That is, how many ridges or valleys are repeated in a unit of time.

The propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave's disturbance propagates along its displacement. Relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation: v = f * λ.

In this case:

Replacing:

340 m/s= f* 0.85 m

Solving:

[tex]f=\frac{340 \frac{m}{s} }{0.85 m}[/tex]

f= 400 Hz

The frecuency is 400 Hz.

The noble gas configuration of vanadium (V), atomic number 23 will be [Ar] 3d34s2.

The electron configuration of noble gases would be known as that of the noble gas configuration. The propensity of chemical elements to gain stability forms the foundation of all chemical reactions. Chemical formation frequently leads to an entire electronic configuration approximating a noble gas for several main group elements.

The atomic number of V = 23

The noble gas configuration = [Ar] [tex]3d^{3} 4s^{2}[/tex].

To know more about noble gas configuration

https://brainly.com/question/13933772

#SPJ3

Answer:

[Ar] 3d3 4s2

Explanation:

[Ar] 3d3 4s2

A statement would be issued to Westfield residents stating the findings of the Reddish-Brown Substance as well as addressing the various claims.

Dear residents of Westfield,

We are writing to inform you about the recent discovery of a reddish-brown substance found in the water supply. After conducting a series of tests and observations, we have determined the identity of the substance.

Firstly, we examined the pipes in the water supply system and found that the reddish-brown substance was present in the pipes. Through analysis of the atomic-scale models, we were able to confirm that the substance found in the pipes is identical to the substance found in the water. Therefore, we make the claim that the reddish-brown substance is the same as the substance that makes up the pipes.

We also investigated whether the reddish-brown substance could be related to the fertilizer used in local agricultural practices. However, after conducting chemical analysis, we found that the reddish-brown substance does not match the composition of the fertilizer. This leads us to conclude that the reddish-brown substance is not the same as the fertilizer.

In conclusion, the reddish-brown substance found in the water supply is not the same as the substance that makes up the pipes or the fertilizer used in local agricultural practices. We apologize for any concern this may have caused and assure you that steps are being taken to address the issue.

Thank you for your attention,

Dr. Yung and team.

That is how the letter should be addressed.

Learn more on reddish-brown substance here: https://brainly.com/question/22666129

#SPJ1