All categories

3 years ago

If you were to decrease thermal energy, what would happen to the particles?

Chemistry

1 answer:

jasenka [17]3 years ago

7 0

Answer: Explanation:

You can change an object's state of matter by adding or removing thermal energy. When you add thermal energy to an object, these things can happen: Particles move faster (increased kinetic energy). Particles get farther apart (increased potential energy).

You might be interested in

Thirty grams of potassium chloride crystals are added to 400 mL of water. What is the molarity of this potassium chloride soluti

photoshop1234 [79]

Answer:

Molarity of potassium chloride is:

A. 1.0 M

Explanation:

Molarity is used to express the concentration of the solution.It is defined as the moles of solutes per liter volume of solution.It is denoted by M.

$molarity(M)=\frac{moles\ of\ solute}{volume\ of\ solution(ml)}\times 1000$

$M=\frac{n}{V(ml)}\times 1000$

Here'n' is the number of moles. It can be calculated using formula:

$n=\frac{given\ mass(w)}{molar\ mass}$

given mass=30 gm

Molar mass of KCl = mass of K+mass of Cl

= 39.098+34.45

= 74.55 g

$n=\frac{30}{74.55}$

n = 0.402 moles

$M=\frac{n}{V(ml)}\times 1000$

$M=\frac{0.402}{400}\times 1000$

$M=\0.001\times 1000$

M=1.00 M

So molarity of potassium chloride is 1.00 M

5 0

4 years ago

Dissolving potassium chlorate (KClO3) is even more endothermic than potassium chloride.

zhenek [66]

Answer:

The mass of KClO₃ that will absorb the same heat as 5 g of KCl is 3.424 g

Explanation:

Here we have

Heat of solution of KClO₃ = + 41.38 kJ/mol.

Heat of solution of KCl (+17.24 kJ/mol)

Therefore, 1 mole of KCl absorbs +17.24 kJ during dissolution

Molar mass of KCl = 74.5513 g/mol

Molar mass of KClO₃ = 122.55 g/mol

74.5513 g of KCl absorbs +17.24 kJ during dissolution, therefore, 5 g will absorb

$\frac{17.24}{74.5513 } \times 5 \, \, kJ \, or \, 1.156 \, kJ$

Therefore the amount of KClO₃ to be dissolved to absorb 1.156 kJ of energy is given by

122.55 g of KClO₃ absorbs + 41.38 kJ, therefore,

$\frac{1.156}{41.38} \times 122.55 \, g = 3.424 \, g$

Therefore the mass of KClO₃ that will absorb the same heat as 5 g of KCl = 3.424 g.

5 0

3 years ago

Water is an amphoteric substance, meaning it can serve as both an acid and a base,

statuscvo [17]

Answer:

given statement is completely true

e.g . water H2O

5 0

3 years ago

Read 2 more answers

What do u notice about the molecules before and after the chemical reaction

dimaraw [331]

Explanation:

In a chemical reaction, the atoms and molecules produced by the reaction are called products.

In a chemical reaction, only the atoms present in the reactants can end up in the products. No new atoms are created, and no atoms are destroyed.

In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.

6 0

3 years ago

When a student titrates a 5.00 mL of formic acid (HCHO2) with 26.59 mL of 0.1088 M NaOH, find the concentration of formic acid s

nikitadnepr [17]

Find it yourself my dude please

6 0

2 years ago