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2 years ago

O HCI + NaOH → NaCl + H₂O + 58 kJ

Chemistry

1 answer:

Basile [38]2 years ago

7 0

In the given equations for chemical reaction, The Equation No. 2 represents an endothermic chemical reaction.

<h3>What is an Endothermic Chemical Reaction ?</h3>

A reaction which uses energy for the formation of products is known as endothermic reaction.

In the Given Equations,

Equation no. 2 shows the uses of energy with reactants at right hand side which accounts the involvement of energy for the formation of product.

Hence, Equation 2 is a Endothermic chemical reaction.

Learn more about endothermic reaction here ;

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How do the intermolecular forces within liquids differ from the intermolecular forces within solids brainly

vitfil [10]

Answer:

C = liquid particles have weaker attractive forces than solids

Explanation:

Properties of Liquid:

Liquid have definite volume but don,t have definite shape.

Their densities are high as compared to the gases but low as compared to the solids.

In liquid, molecules are close to each other and have greater inter molecular forces as compared to the gas molecules.

Properties of solids:

Solids have definite volume and shape.

In solids molecules are tightly pack and very close to each other.

Their melting and boiling point are every high.

The densities of solids are also very high as compared to the liquid and gas.

There are very strong inter molecular forces are present between solid molecules.

8 0

3 years ago

Definition: this is the amount of disorder in a system

Sholpan [36]

Answer:

Entropy

Explanation:

4 0

3 years ago

Under certain conditions, the substances iron and chlorine combine to form iron(III) chloride. If 31.5 grams of iron and 60.0 gr

olchik [2.2K]

Answer: The mass of iron (III) chloride that must be formed is 91.32 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For iron:

Given mass of iron = 31.5 g

Molar mass of iron = 55.8 g/mol

Putting values in equation 1, we get:

$\text{Moles of iron}=\frac{31.5g}{55.8g/mol}=0.564mol$

For chlorine gas:

Given mass of chlorine gas = 60.0 g

Molar mass of chlorine gas = 71 g/mol

Putting values in equation 1, we get:

$\text{Moles of chlorine gas}=\frac{60.0g}{71g/mol}=0.845mol$

The chemical equation for the reaction of titanium and chlorine gas follows:

$2Fe+3Cl_2\rightarrow 2FeCl_3$

By Stoichiometry of the reaction:

3 moles of chlorine gas produces 2 mole of iron (III) chloride.

So, 0.845 moles of chlorine gas will produce = $\frac{2}{3}\times 0.845=0.563moles$ of iron (III) chloride.

Now, calculating the mass of iron (III) chloride from equation 1, we get:

Molar mass of iron (III) chloride = 162.2 g/mol

Moles of iron (III) chloride = 0.563 moles

Putting values in equation 1, we get:

$0.563mol=\frac{\text{Mass of iron (III) chloride}}{162.2g/mol}\\\\\text{Mass of iron (III) chloride}=(0.563mol\times 162.2g/mol)=91.32g$

Hence, the mass of iron (III) chloride that must be formed is 91.32 grams

6 0

3 years ago

Read 2 more answers

Write condensed and bond-line structural formulas for all of the constitutional isomers Practice problem 4.1 with the molecular

OLEGan [10]

Answer:

See figure 1.

Explanation:

In this case have to take into account that all structures must have the formula: $C_7H_16$ . If we remember the general formula for alkanes: $C_nH_2_n_+_2$ if we have "7" carbons (n=7) we will have 16 hydrogens. Therefore all the structures that fit with this formula are alkanes.

6 0

3 years ago

If testing shows an element is a poor conductor of electricity, it is probably a(n)

olga55 [171]

An electrical insulator.
Insulator is something opposite to conductor, electricity cannot transfer through it easily. Therefore we can say a poor conductor is also a good insulator.
Examples of electrical insulators include plastic, wood, cloth etc. Because they are lack of free electrons that cannot transfer electricity fast enough.

4 0

3 years ago