All categories

2 years ago

What makes atoms different than ions?

2 answers:

7 0

Answer:the term 'atom' in chemistry represents the basic unit of matter that normally exists in a free state and contains all chemical properties. It is an infinite particle that clearly identifies a chemical element. It consists of a positively charged nucleus and is surrounded by negatively charged electrons.

An ion or charge is an atom or group of atoms that has lost or gained one or more electrons. An ion that has a negative charge, when it gains one or more electrons, is called an anion or negative charge, and an ion that has a positive charge when it loses one or more electrons, is called a cation or positive charge.

Explanation:

LUCKY_DIMON [66]2 years ago

4 0

Explanation:

the answers must help you I made this presentation for you

You might be interested in

Rubbing alcohol is 70.% (m/v) isopropyl alcohol by volume. how many ml of isopropyl alcohol are in a 1 pint (473 ml) container?

g100num [7]

The number of ml of isopropyl alcohol that are 1 pint (473 Ml) is 331.1 Ml

calculation

assume that the 1 pint is in a container

This implies that the 1 pint (473 ml) is in 100 % M/V
what about 70 %(M/V)

that is 473 Ml = 100 %
? = 70 %

by cross multiplication
= 473 x70/100 = 331.1 Ml

8 0

3 years ago

Read 2 more answers

Which of these compounds are used to reduce acidity of soil

Nataliya [291]

<h2>Answer: Calcium Oxide and Calcium Hydroxide</h2>

Explanation:

To reduce the acidity of the soil, bases are used.

Calcium Oxide and Calcium Hydroxide are two such bases that are often used.

4 0

2 years ago

Practice Problem #1: __TiO2 + __Cl2 + __C __TiCl4 + __CO2 + __CO

ICE Princess25 [194]

Answer:

Explanation:

Given data:

Moles of Cl₂ react = ?

Moles of carbon = 4.55 mol

Solution:

Chemical equation:

2TiO₂ + 4Cl₂ + 3C → 2TiCl₄ + CO₂ + 2CO

Now we will compare the moles of Cl₂ with C.

C : Cl₂

3 : 4

4.55 : 4/3×4.55 = 6.1 mol

6.1 moles of chlorine will react with 4.55 moles of C.

Given data:

Mass of TiO₂ react = ?

Moles of carbon = 4.55 mol

Solution:

Chemical equation:

2TiO₂ + 4Cl₂ + 3C → 2TiCl₄ + CO₂ + 2CO

Now we will compare the moles of Cl₂ with C.

C : TiO₂

3 : 2

4.55 : 2/3×4.55 = 3 mol

Mass of TiO₂:

Mass = number of moles × molar mass

Mass = 3 mol × 79.87 g/mol

Mass = 239.61 g

Given data:

Molecules of TiCl₄ formed = ?

Moles of TiO₂ react = 115 g

Solution:

Chemical equation:

2TiO₂ + 4Cl₂ + 3C → 2TiCl₄ + CO₂ + 2CO

Number of moles of TiO₂:

Number of moles = mass/ molar mass

Number of moles = 115 g/ 79.87 g/mol

Number of moles = 1.44 mol

Now we will compare the moles of Cl₂ with C.

TiO₂ : TiCl₄

2 : 2

1.44 : 1.44

Molecules of TiCl₄:

1 mole = 6.022 × 10²³ molecules

1.44 ×6.022 × 10²³ molecules

8.672× 10²³ molecules

8 0

3 years ago

4. Consider the following half-reactions: MnO4–(aq) + 8H+(aq) + 5e– → Mn+2(aq) + 4H2O(l) NO3–(aq) + 4H+(aq) + 3e– → NO(g) + 2H2O

jeyben [28]

Explanation:

The chemical reaction given in the question is as follows -

MnO₄⁻ (aq) + 8H⁺ (aq) + 5e⁻ → Mn²⁺ (aq) + 4H₂O (l)

NO₃⁻ (aq) + 4H⁺ (aq) + 3e⁻ → NO (g) + 2H₂O (l)

As we know , the value for reduction potential are -

Mn²⁺ = + 1.51 V

NO₃⁻ = +0.96 V

From , the data given above , the value of the reduction potential of NO₃⁻ is less than the reduction potential of Mn²⁺ .

Hence ,

NO₃⁻ can not oxidize Mn²⁺ .

5 0

2 years ago

Will calcium metal react with chromium (III) chloride? Explain your answer

iren [92.7K]

Calcium metal with chromium(III) chloride would react. Calcium metal is more reactive than chromium metal; therefore, putting calcium metal in chromium chloride would create a reaction, where as putting chromium metal in calcium chloride would not form any reaction.

5 0

2 years ago