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Answer:

La energía necesaria para calentar el bloque de aluminio es 54927 J.

Explanation:

Se denomina calorimetría a la medición y el cálculo de las cantidades de calor que intercambia un cuerpo o un sistema.

De esta manera, entre el calor y la temperatura existe una relación de proporcionalidad directa (Dos magnitudes son directamente proporcionales cuando existe una constante de manera que cuando una de las magnitudes aumenta, la otra también; y lo mismo ocurre cuando alguna de las dos disminuye.). La constante de proporcionalidad depende de la sustancia que constituye el cuerpo como de su masa, y resulta el producto del calor específico por la masa del cuerpo. Entonces, la ecuación que permite calcular intercambios de calor es:

Q=c*m*ΔT

Donde Q es el calor intercambiado por un cuerpo de masa m, constituido por una sustancia de calor específico c y donde ΔT es la variación de temperatura.

En este caso:

Reemplazando:

Q= 0.9 [tex]\frac{J}{g*C}[/tex]*850 g* 71.8  C

y resolviendo se obtiene:

Q= 54927 J

La energía necesaria para calentar el bloque de aluminio es 54927 J.

You know the number of moles of Mg that react: 6 moles.

You don't know (yet) how many moles of Mg₃N₂ are produced when 6 moles of Mg react.

The coefficients of each substance in the chemical equation tells us the molar ratio between the substances. The coefficient of Mg is 3, and the coefficient of Mg₃N₂ is 1 (coefficients of 1 are implied and omitted). So, for every 3 moles of Mg that react, 1 mole of Mg₃N₂ is produced.

We can use the proportion set up in the image to calculate the number of moles of Mg₃N₂ produced. In the first fraction, the green-boxed numerator should be our known number of moles of Mg, that is, 6 moles Mg. In the second fraction, we insert our molar ratio. Since we want the product of these two fractions to have the units "moles Mg₃N₂," the numerator in the second fraction should be 1 mole Mg₃N₂ and the denominator should be 3 moles Mg.

Our setup should look like this:

[tex]\frac{\textrm{6 moles Mg}}{1} \times \frac{\textrm{1 mole }\mathrm{Mg_3N_2}}{{\textrm{3 moles Mg}}} = \textrm{2 moles }\mathrm{Mg_3N_2}.[/tex]

Indeed, 2 moles of Mg₃N₂ are produced.

Answer:

2 moles of Mg₃N₂ are produced.

Explanation:

Answer:

a

Explanation:

Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits.

Answer:

This is true.

Explanation:

Answer:

I believe it is 3. All of these.

Explanation:

Not all organisms hold their genetic code (DNA) inside a nucleus. In fact, some organisms don't have a nucleus at all but I'm pretty sure that these three do. I would select all of these.

Hope that helps and have a nice day.

Answer:

0.320 g Cu.

Explanation:

Hello there!

In this case, case, according to the presented chemical reaction, it is possible to determine that the mole ratio of zinc to copper is 1:1 and therefore, we will have the same amount of atoms for the both of them. Moreover, since one mole of copper contains 6.022x10²³ atoms of this element, with a mass of 63.546 g (molar mass); it is possible for us to write up the following mathematical setup in order to calculate the produced grams of copper:

[tex]3.03x10^{21}atoms Zn*\frac{1atom Cu}{1atom Zn}*\frac{1molCu}{6.022x10^{23}atoms Cu}*\frac{63.546gCu}{1molCu} \\[/tex]

Thus, the numerical result turns out to be:

0.320 g Cu

Best regards!

Answer:

Polymers are long chain molecules that occur naturally in living things and can also be made by chemical processes in industry. Plastics are polymers, so polymers can be extremely useful.

Explanation:

Answer:

5 loaves of bread, 5g of yeast

Answer:

Umm I think it 2

Explanation:

Explanation:

bit.^{}

ly/3a8Nt8n

jjsjjsjsjjzjsjsjs

Answer:

the answer should be six months

Answer:

Lipids are divided into three categories.

Triglycerides, phospholipids, and sterols are the three major forms of lipids.

This is a Charles' Law problem: V1/T1 = V2/T2. As the temperature of a fixed mass of gas decreases at a constant pressure, the volume of the gas should also decrease proportionally.

To use Charles' Law, the temperature must be in Kelvin (x °C = x + 273.15 K). We want to solve Charles' Law for V2, which we can obtain by rearranging the equation into V2 = V1T2/T1. Given V1 = 25 L, T1 = 1200 °C (1473.15 K), and T2 = 25 °C (298.15 K):

V2 = (25 L)(298.15 K)/(1473.15 K) = 5.1 L.  

The volume of this gas will be "5.1 L".

Given:

             [tex]= 1473 \ K[/tex]

             [tex]= 298 \ K[/tex]

As we know,

→ [tex]\frac{V_1}{V_2} = \frac{T_1}{T_2}[/tex]

By substituting the values, we get

→ [tex]\frac{25 \ L}{V_2} = \frac{1473 \ K}{293 \ K}[/tex]

→    [tex]V_2 = \frac{25\times 298}{1473} \ L[/tex]

→         [tex]= 5.1 \ L[/tex]

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https://brainly.com/question/21437107

Answer:

sunlight, water, carbon dioxide, soil, are the basics which you also have phosphorus and nitrogen

Answer:C) the Catskills

Explanation:

Answer:

0.584 J/g°C

Explanation:

Using the formula as follows;

Q = m × c × ∆T

Where;

Q = amount of heat (joules)

m = mass of substance (g)

c = specific heat capacity (J/g°C)

∆T = change in temperature (°C)

According to the information in this question;

mass of substance (m) = 1050g

Initial temperature = 25.7°C

Final temperature = 30.4°C

amount of heat (Q) = 2880J

change in temperature (∆T) = (30.4°C - 25.7°C) = 4.7°C

Using Q = m.c.∆T

c = Q ÷ m∆T

c = 2880 ÷ (1050 × 4.7)

c = 2880 ÷ 4935

c = 0.584 J/g°C

The specific capacity of the substance is 0.584 J/g°C.

Answer:

The answer is 18.01528.

We assume you are converting between grams H2O and mole.

Explanation:

Answer:

it pops?

Explanation:

Answer:

b because the detective ate coffee all day

Answer:

B

Explanation:

When it freezes, it will be a solid. The molecules will barely move, not as much as in the other answer choices.  

Answer:

Spring

Explanation:

Spring is a place where water moving underground finds an opening to the land surface and emerges, sometimes as just a trickle, maybe only after a rain, and sometimes in a continuous flow. ... Note: This section of the Water Science School discusses the Earth's "natural" water cycle without human interference.

Answer:

aquifer=b

Explanation:

hope it helps

Explanation:

new Mexico and Louisiana

Answer: two two

Explanation:

Answer:

yes

Explanation:

bc god exist

Answer:

3200

Explanation:

Answer: precipitate

Explanation:

Answer:

C

Explanation:

Weak acids dissociate only slightly in an aqueous solution. The majority of molecules remain undissociated.

Answer:

Pancreas.

Explanation:

Living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.

Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.

Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc.

An endocrine system refers to a series of ductless glands and organs responsible for the production and secretion of hormones that are used by the body for the performance of various functions such as metabolism, controlling growth, reproduction, mood, sleep, etc. These hormones are secreted directly into the circulatory system (blood) and then transported to the organs and tissues in the body.

Pancreas is one of the glands of the endocrine and digestive systems that produces insulin to help control the body's sugar levels and enzymes which aid in digestion.