Chemistry: Principles and Practice (3rd Edition)

Chapter 2

Verified Answer ✓

Dalton Atomic Theory more

Verified Answer ✓

Dalton transformed Democritus's idea on atoms into... more

Verified Answer ✓

Three subatomic particles that make up an atom are... more

Verified Answer ✓

$9,200,000,000,000 x (0.166 mm/$1) x (1 m/1000 mm... more

Verified Answer ✓

1 trillion= 1000 billion more

Verified Answer ✓

Dalton's atomic theory proposed that all matter ... more

Verified Answer ✓

Therefore;Hydrogen peroxide H2O2 is formed by the ... more

Verified Answer ✓

Dalton's atomic theory says that atoms are neither... more

Verified Answer ✓

The Law of Constant Composition says that a pure ... more

Verified Answer ✓

Atom is the basic unit of any matter. This is the ... more

Verified Answer ✓

An atom is made up of three major particles which ... more

Verified Answer ✓

Rutherford experiment consist in bombard alpha ... more

Verified Answer ✓

Rutherford performed an experiment by using the ... more

Verified Answer ✓

All the neutrons and protons are present at the ... more

Verified Answer ✓

The atomic number refers to the number of a ... more

Verified Answer ✓

Mass number is the sum of the number of protons ... more

Verified Answer ✓

Isotopes : Element having same atomic number and ... more

Verified Answer ✓

Striking of alpha particles with thickened ... more

Verified Answer ✓

Atomic Number = Number of protons + Number of ... more

Verified Answer ✓

Mass number = protons + neutrons more

Verified Answer ✓

By knowing the symbol of the element, you will ... more

Verified Answer ✓

For elements with more than one stable or long-... more

Verified Answer ✓

A number before an element shows number of atoms ... more

Verified Answer ✓

The molecular formula of methane is made up of two... more

Verified Answer ✓

N2O4 which indicates that this molecule is ... more

Verified Answer ✓

The formula CO indicates that an individual ... more

Verified Answer ✓

Molecular compounds are commonly called as ... more

Verified Answer ✓

When the name of the anion ends in -ate, the name ... more

Verified Answer ✓

NO is called as nitric oxide or nitrogen monoxide ... more

Verified Answer ✓

The formula shows that there are 3 chloride toms, ... more

Verified Answer ✓

Ionic compounds are generally composed of a metal ... more

Verified Answer ✓

Molecular compounds on the other hand they have ... more

Verified Answer ✓

Explanation is part of the answer. more

Verified Answer ✓

Properties of NaCl that proves Melting point = 801... more

Verified Answer ✓

Diagram / picture is as: more

Verified Answer ✓

Molten ionic compounds conduct electricity because... more

Verified Answer ✓

group are the vertical columns on the periodic ... more

Verified Answer ✓

Here the element is chlorine atom with 20 neutrons... more

Verified Answer ✓

The mass number A is the sum of the number of ... more

Verified Answer ✓

Number of neutrons = 6 Number of protons = 5 ... more

Verified Answer ✓

25 protons on the periodic table is Manganese (Mn... more

Verified Answer ✓

1.- General symbol ZAXqWhere:Z = protons + ... more

Verified Answer ✓

AnsAtomic number= Number of proton = 23Number of ... more

Verified Answer ✓

Element is 12852Tesuperscript is mass number = ... more

Verified Answer ✓

This element will have a charge of 2- because the ... more

Verified Answer ✓

The superscript is the sum of protons and neutrons... more

Verified Answer ✓

First of all you have to check that the number of ... more

Verified Answer ✓

Since this element has 10 electrons and 12 protons... more

Verified Answer ✓

1.- General symbolZAXqWhere:Z = protons + ... more

Verified Answer ✓

Silicon-29 has 14 electrons 14 protons and 15 ... more

Verified Answer ✓

(atomic number) protons=35neutrons=44electrons=... more

Verified Answer ✓

protons = 23 neutrons = 28electrons = 20Charge = ... more

Verified Answer ✓

The atom with 53 protons and 74 neutrons is Iodine... more

Verified Answer ✓

The number of protons correspond to the atomic ... more

Verified Answer ✓

Atomic Number: 20Mass Number: 40Charge: +2Number ... more

Verified Answer ✓

First of all I created the table from the data ... more

Verified Answer ✓

atomic mass=Σ(isotopic mass)(abundance)atomic mass... more

Verified Answer ✓

The one with 78.918u is written as 79Br while ... more

Verified Answer ✓

In the periodic table, this element given is in ... more

Verified Answer ✓

A group is a column in the periodic tableOxygen is... more

Verified Answer ✓

Representative elements are also known as main ... more

Verified Answer ✓

Potassium is in Group 1A so it is a representative... more

Verified Answer ✓

The elements in which last electron enters in s ... more

Verified Answer ✓

Representative elements are elements found in s ... more

Verified Answer ✓

Platinum is in the middle of the table so it is a ... more

Verified Answer ✓

The alkaline earth metals make up Group 2A of the ... more

Verified Answer ✓

The rows of the periodic table are called periods... more

Verified Answer ✓

NOCl2​Molecular Mass in grams per moleMolar mass ... more

Verified Answer ✓

As we know that to find the molecular mass of a ... more

Verified Answer ✓

P4O10: = 4(30.97) + 10(16) = 283.88 g/mol more

Verified Answer ✓

The ionic compound must be neutral overall so ... more

Verified Answer ✓

The compound must be neutral overall so there must... more

Verified Answer ✓

Y has a valency of +3Cl has a valency of 1 thus ... more

Verified Answer ✓

Named calcium chloride ( CaCl2), the compound is ... more

Verified Answer ✓

We need to establish the cation and the anion in ... more

Verified Answer ✓

Lithium is in Group 1A so it forms a charge of +1 ... more

Verified Answer ✓

Yttrium has the noble gas configuration of [Kr]... more

Verified Answer ✓

Permanganate contains the manganate (VII) ion (Mn7... more

Verified Answer ✓

Chromate has a 6+ oxidation state so it binds to 4... more

Verified Answer ✓

This is a straight chain-alkane composed of 6 ... more

Verified Answer ✓

Formula of iron(III) sulfate is Fe2(SO4)3. It is ... more

Verified Answer ✓

 phosphorus tribromide Is molecular because all of... more

Verified Answer ✓

Atomic Number: 14Mass Number: 28Charge: -2Number ... more

Verified Answer ✓

The atomic mass of 6Li is 6.015 amu, with the ... more

Verified Answer ✓

When writing atomic symbols, the number of protons... more

Verified Answer ✓

Molecular mass unit = kg/mol or g/molFormila mass ... more

Verified Answer ✓

To convert the number of atoms to moles, divide ... more

Verified Answer ✓

The empirical formula expresses the simplest ... more

Verified Answer ✓

We are given the following unbalanced chemical ... more

Back to Top

Log In

Contact Us

Upload An Image

Please select an image to upload
Note: must be in .png, .gif or .jpg format
OR
Provide URL where image can be downloaded
Note: must be in .png, .gif or .jpg format

By clicking this button,
you agree to the terms of use

By clicking "Create Alert" I agree to the Uloop Terms of Use.

Image not available.

Add a Photo

Please select a photo to upload
Note: must be in .png, .gif or .jpg format