What are the correct coefficients in order for the equation to be balanced?

Answer:

215 [C°].

Explanation:

1) if the given energy is Q, the initial temperature is t₀, the final temperature is t, then

2) Q=cm(t-t₀);

[tex]t=\frac{Q}{cm}+t_0;[/tex]

3) according to the formula above:

[tex]t=\frac{4500}{0.39*100}+100=215.[/tex]

Answer: Li3N + 3NH4NO ---> 3LiNO3 + (NH4)3N

Explanation: Above is a double displacement/replacement reaction since two compound are sought as displacing.

Hope this helps!

Answer:

In all the problems below, the pressure and the amount of gas are held constant. Problem #1: Calculate the decrease in temperature (in Celsius) when 2.00 L at 21.0 °C is compressed to 1.00 L. Converting 147.0 K to Celsius, we find -126.0 °C, for a total decrease of 147.0 °C, from 21.0 °C to -126.0 °C.

Answer:

1.9L

Explanation:

edg 2023 chemistry A

from the plants

Explanation:

bc plant produce 02

Set up A will dissolve the 100g of sugar fastest in 1 L of water due to the inclusion of physical agitation in the form of stirring.

We have to note that energy and sometimes physical agitation are necessary in order to dissolve a solid in a liquid. In this case, we want to dissolve sugar in water.

Set up A in which the temperature is raised to 80 degrees with agitation will dissolve the 100g of sugar fastest in 1 L of water due to the inclusion of physical agitation in the form of stirring.

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How temperature and air pressure play a role in creating wind.

Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.

hope it helps.

Aliyyah.

Winds are created by the change in temperature gradient which results in the difference in pressure causes the circulation of air from high pressure area to low pressure area that is called winds.

Wind is the circulation or passage of air from one region to the other over a pressure gradient. The pressure gradient is resulting from the uneven heating of the atmosphere.

According to Gay- Lussac's  law, the pressure of a gas is directly proportional to the temperature of the region. Thus as the temperature over an area increases pressure also increases.

The heat radiated from the sun is unevenly distributed in the earth atmosphere results in difference in pressure also. To balance this pressure difference, the air from high pressure region passes to low pressure region creating the winds.

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Answer:

dioxide levels from 2002 to 2006.

Explanation:

According to Graham's law, CO, with the lowest molar mass, will have the fastest rate of effusion.

In physics and chemistry, effusion is the process in which a gas escapes from a container through a hole of diameter considerably smaller than the mean free path of the molecules.

According to Graham's law, the rate of effusion (r) is inversely proportional to the square root of the molar mass (M) of the gas.

r ∝ 1/√M

We have the following gases with the respective molar masses.

According to Graham's law, CO, with the lowest molar mass, will have the fastest rate of effusion.

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Kwestrong is an Ojibwe event in which women of all ages run, bike and canoe to test their strength and endurance.

Kwestrong is an Ojibwe event that means "strong woman." It is an organization formed by Native women that fosters companionship while also building strength and endurance.

Kwestrong goal is about Native Women empowering and motivating one another to achieve their own fitness goals.

Therefore, we can conclude that, Kwestrong is an Ojibwe event in which women of all ages run, bike and canoe to test their strength and endurance.

Learn more about Kwestrong here:

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Answer:

1 [tex]C_{3}H_{6}O_{2}[/tex] (g) + 6 [tex]O_{2}[/tex] (g) → 3 [tex]H_{2}O[/tex] (g) + 3 [tex]CO_{2}[/tex] (g)

Answer: K + H2O = KOH + H2

Explanation:

Answer:

1.1 mole

Explanation:

The mass of potassium chloride is 3.8 g . Look at the mole ratio you have between potassium chlorate and potassium chloride; what you will see is that every 2 moles of potassium chlorate will produce 2 moles of potassium chloride, i.e. you have a 1:1 mole ratio between the two compounds

This problem is providing us with the mass of an unknown element which produces 43.5 g of M3N2. Thus, its name and molar mass are required and found to be 4.02 g/mol and calcium nitride after the following:

In chemistry, stoichiometry is a tool used for the calculation of masses or moles involved in chemical reactions, by the utilization of molar masses and mole ratios based on proportional factors.

In such a way, for the given reaction, one can use the formulas to write the following balanced chemical equation:

[tex]3M+N_2\rightarrow M_3N_2[/tex]

Where there is a 3:1 mole ratio of the metal to the product, which means we can use the following stoichiometric setup:

[tex]35.3gM*\frac{1molM}{x}*\frac{1molM_3N_2}{3molM} *\frac{(3x+14.01*2)gM_3N_2}{1molM_3N_2}=43.5gM_3N_2[/tex]

Now, by using the numbers only, one will be able to calculate x as the atomic mass of the element M in g/mol:

[tex]35.3*\frac{1}{x}*\frac{1}{3} *\frac{3x+14.01*2}{1}=43.5\\\\\frac{105.9x+989.106}{3x}=43.5\\ \\105.9x+989.106=130.5x\\\\989.106=130.5x-105.9x\\\\x=\frac{989.106}{130.5-105.9} =40.2g/mol[/tex]

Which matches with the molar mass of calcium. Moreover, we find its name as calcium nitride.

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Answer:

whats the question in this

Explanation:

Answer:

Cold front lol

Explanation:

Hopefully this helps :)

Answer:

Explanation:

According to Charles rule,

[tex]\dfrac{V_{1}}{T_{1}}=\dfrac{V_{2}}{T_{2}}[/tex]

V₁ = initial volume = 1145 mL

V₂ =  final volume = 765 mL    & T₂ = final temperature = 640 K

[tex]\dfrac{1145}{T_{2}}=\dfrac{765}{640}\\\\\\Cross \multiply\\\\1145*640=T_{2}*765\\\\\dfrac{1145*640}{765}=T_{2}\\\\T_{2} = 957.9 \ K[/tex]

Answer:

35.5 is the answer

Explanation:

pls mark me brainlest

Answer:

SEE BELOW

Explanation:

Glucose (C6H12O6) is an organic compound composed of the elements carbon, hydrogen and oxygen.

Answer:

by losing one or more electrons*

Answer:

This is the answer to the question 0.1734

Explanation:

3.5/20.18

=0.1734

Answer:

Explanation:

Balanced equation :

2NaOH (aq) + Mg(NO3)2 (aq) → Mg(OH)2(s) + 2NaNO3(aq)

2 mole NaOH reacts with 1 mole Mg(NO3)2 to produce 1 mole Mg(OH)2.

Check for limiting reactant :

Mol NaOH in 200.0 mL of 0.125 M solution

Mol = 0.125 mol/L * 200 mL / 1000 mL/L = 0.025 mol

This will react with 0.025 / 2 = 0.0125 mol Mg(NO3)2

Mol Mg(NO3)2 in 400 mL of 0.025 M solution

= 400 mL / 1000 mL/L * 0.025 mol /L = 0.01 mol Mg(NO3)2

The NaOH is in excess and the limiting reactant is Mg(NO3)2

0.01 mol Mg(NO3)2 will produce 0.01 mol Mg(OH)2

Molar mass Mg(OH)2 = 58.32 g/mol

Mass of 0.01 mol Mg(OH)2 = 0.01mol * 58.32 g/mol = 0.5832 g

Product isolated was 0.45 g

Percent yield = Product / Reactant * 100%

= 0.45 / 0.5832 * 100%

= 77.16% yield.

Answer:

The two elements that most commonly fail to complete an octet are boron and aluminum; they both readily form compounds in which they have six valence electrons, rather than the usual eight predicted by the octet rule.

I think it will help you.

The possible effects of this condition on the family is adverse because they can't do fishing due to eruption.

Aquatic life can be affected due to volcanic eruption due to increase in acidity, change in temperature, and change in food supply. These factors can damage and also kill fish so this eruption has adverse effect on the family's economic condition and my advice is to them to change their place of living and settle in other unaffected area.

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Answer:

A single time the hail stone was drafted up and down in the atmosphere

Explanation:

Answer: -1323 kJ mol^-1

Explanation:

[tex]\begin{aligned}&\mathrm{C}_{2} \mathrm{H}_{4(\mathrm{~g})}+3 \mathrm{O}_{2(g)} \longrightarrow 2 \mathrm{CO}_{2(g)}+2 \mathrm{H}_{2} \mathrm{O}_{(1)} \quad \Delta \mathrm{H}=? \\&\Delta \mathrm{H}=\left(\sum \Delta \mathrm{Hf} \text { products }\right)-\left(\sum \Delta \mathrm{Hf} \text { Reac tan ts }\right) \\&\Rightarrow[(2 \times-393.7)+(2 \times-241.8)]-[(52.3+0)] \\&\Rightarrow[-787.4 - 483.6]-52 \\&\Rightarrow-1323 \mathrm{~kJ} \mathrm{~mol}^{-1}\end{aligned}[/tex]

The enthalpy of combustion for the burning of ethylene is -1323.33 kJ/mol

The term combustion has to do with the burning of a particular substance in oxygen. In this case, the equation of the reaction is;

C2H4 + 3O2 ----->2CO2 + 2H2O

The enthalpy of combustion can be obtained from the relation;

ΔH rxn = [(2(-393.7) + 2(-241.8)] - [(52.3 + 3(0)]

ΔH rxn = (-787.4) + (-483.6) - 52.3

ΔH rxn = -1323.33 kJ/mol

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Answer:

Metal is used in the making of wire because of its high conductivity. Metals are also ductile, so the making of wire is easy with metal.