2NO(g) + O2 → 2NO2
In one experiment, 1.866 mol of NO is mixed with 4.503 mol of O2.
a)Determine the limiting reagent
b) Calculate the number of moles of NO2 produced.

Answer:

Because the equilibrium constant is only at constant at temperature. Changing the temperature changes the Ka.

Answer:

345J

Explanation:

-mass of iron (m) = 10.0 g

-temperature (ΔT) = final temperature- initial temperature= 100-25=  75 degree Celsius

-Specific Heat capacity of iron (c)= 0.46J/g°C.

Heat (Q)=?

Solution:

Formula for Heat is :

Q=m x c x ΔT

Q= 10 x 0.46 x 75

Q= 345 J.  

so, 345 joules of heat are needed to increase the temperature of 10 grams of iron.

From the above formula, all other questions can easily be solved from the same procedure.

345 joules of heat is required  to raise the temperature of 10.0 g of iron from 25°C to 100°C.

Required heat of any reaction can be calculated as:

Q = m x c x ΔT, where

In the question given that:

m = mass of iron = 10g

c = specific heat capacity of iron = 0.46J/g°C

ΔT = change in temperature = final temperature- initial temperature= 100-25=  75 degree Celsius

Now putting all these values in the above equation, we get

Q= 10g x 0.46J/g°C x 75°C = 345J

Hence, 345 joules of heat is required.

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Answer:

condensation and evaporation

Explanation:

condensation forms when warm humid air contacts cold surface. during cold months.

Answer:

E

Explanation:

Answer:

Covalent bonding is a type of chemical bonding which is characterized by atoms sharing electrons. For nitrogen and chlorine to covalently bond, nitrogen needs 3 electrons. Chlorine only has one electron therefore two more chlorine molecules are needed. Because one atom of nitrogen needs 3 atoms of chlorine to bond, the formula will be NCl3.

Answer:

FILTRATION.

filter the solution and separate sand and salt solution

evaporation

evaporate the water and salt mixture and salt will be left as a solid

Answer:

FALSE

Explanation:

Answer:

plastic, glass, and electronics

Explanation:

those take longer to erode than normal trash.

Explanation:

You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the cause, while a dependent variable is the effect. In an experiment, you manipulate the independent variable and measure the outcome in the dependent variable.

Neutralization reaction

Hello, in the following reaction HBr is strong acid when reacts with Amphoteric Aluminium hydroxide gives water & AlBr3 as salt.

We know that in neutralization reaction

acid & bases reacts to give salt and water. Hence following reaction is neutralization reaction.

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Answer:

Hydrogen gas

Explanation:

During electrolysis of acidified water, H+ ions are reduced to H2 gas at the negative carbon electrode (cathode) and hence hydrogen gas is liberated at cathode.

Answer:

S

Explanation:

The symbol for entropy is S, and a change in entropy is shown as “delta” S or ΔS. If the entropy of a system increases, ΔS is positive. If the entropy of a system decreases, ΔS is negative.

Answer:

Copper Sulphate is missing

Answer:

xkejhtidisjwjfnnfnsjrjdnqnhrijchqi

Answer:

A catalyst is a substance that can be added to a reaction to speed up the process without being absorbed by it. Catalysts usually work by lowering the activation energy or modifying the mechanism of a reaction. Proteins that act as catalysts in biochemical reactions are known as enzymes.

Explanation:

Answer: The moles needed are 0.01.

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]

where,

n = moles of solute [tex](CuSO_4.5H_2O)[/tex] = ?  

[tex]V_s[/tex] = volume of solution in ml  

Now put all the given values in the formula of molarity, we get

[tex]0.10=\frac{n\times 1000}{100}[/tex]

[tex]n=\frac{0.10\times 100}{1000}=0.01[/tex]

Therefore, the moles needed are 0.01.

Answer:

am not sure but I think it c

Answer:

it’s A and B and the last one I still am trying to figure out.

Explanation:

Answer:

the correct answer is c, how easily something catches flames

Answer:

high temperature

Explanation:

Answer:

amplitude or pitch

Explanation:

An exothermic reaction is described by ΔH(reactants) is greater than ΔH( products) and the correct option is option A.

The word exothermic means “releasing heat.” Energy, often in the form of heat, is released as an exothermic reaction proceeds.

Enthalpy of a reaction is defined as the heat energy change (Δ H) that takes place when reactants go to products. If heat is absorbed during the reaction, Δ H is positive; if heat is released, then Δ H is negative.

ΔH value negative –> energy released –> exothermic reaction

ΔH value positive –> energy absorbed –> endothermic reaction

Therefore, an exothermic reaction is described by ΔH(reactants) is greater than ΔH( products) and the correct option is option A.

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Answer:

virtual

Explanation:

because we cannot touch or sense it

Answer:

Project scope statement?

Explanation:

it's good one just do research on it

Answer:

C

Explanation:I got it correct on a quiz I did that had this question

Answer:

A titanium ion

Answer:

SUN

Explanation:

Hope this helps! Plz mark as brainliest!

Answer:

nitric acid + iron=iron+[nitric acid ] 2 hydrogen

The net ionic equation will be Fe → [tex]Fe^{2+}[/tex].

The net ionic equation would be a chemical equation which only indicates the elements, compounds, as well as ions instantly involved in a chemical reaction.

The given chemical equation is:

HNO3+Fe → Fe(HNO3)2 +H2​

It can be written in term of ionic equation.

[tex]H^{+}[/tex] + [tex]NO_{3}^{-}[/tex]+Fe → [tex]Fe^{2+}[/tex] + [tex]H^{+}[/tex] + [tex]NO_{3}^{-}[/tex]

Hydrogen ion and nitrate ion will be canceled each other.

Hence, the net ionic equation will be

Fe → [tex]Fe^{2+}[/tex]

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