Who were the terrorists that attacked the united states on September 11, 2001

What is the contrast of these two atoms?

Katena32 [7]

Answer:

The atomic number of silicon is 14 while atomic mass of carbon is 14.

Explanation:

An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.

All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.

In given atoms ¹⁴₆C and ²⁸₁₄Si the atomic mass of carbon is 14 while the atomic number of silicon is 14. It means silicon has 14 electrons or protons while carbon has 6 protons or electrons because its atomic number is 6. Carbon has 6 protons and 8 neutrons in its nucleus while silicon has 14 protons and 14 neutrons in its nucleus.

In C:

Number of neutrons + protons = 8 + 6 = 14 amu (mass number)

Number of electrons = 6

In Si:

Number of neutrons + protons = 14 + 14 = 28 amu (mass number)

Number of electrons = 14

6 0

3 years ago

Identify the hybridization of each carbon atom for the molecule above

ipn [44]

Carbons starting from the left end:

sp²
sp²
sp²
sp
sp

Refer to the sketch attached.

<h3>Explanation</h3>

The hybridization of a carbon atom depends on the number of electron domains that it has.

Each chemical bond counts as one single electron domain. This is the case for all chemical bonds: single, double, or triple. Each lone pair also counts as one electron domain. However, lone pairs are seldom seen on carbon atoms.

Each carbon atom has four valence electrons. It can form up to four chemical bonds. As a result, a carbon atom can have up to four electron domains. It has a minimum of two electron domains, with either two double bonds or one single bond and one triple bond.

A carbon atom with four electron domains is sp³ hybridized;
A carbon atom with three electron domains is sp² hybridized;
A carbon atom with two electron domains is sp hybridized.

Starting from the left end (H₂C=CH-) of the molecule:

The first carbon has three electron domains: two C-H single bonds and one C=C double bond; It is sp² hybridized.
The second carbon has three electron domains: one C-H single bond, one C-C single bond, and one C=C double bond; it is sp² hybridized.

The third carbon has three electron domains: two C-C single bonds and one C=O double bond; it is sp² hybridized.
The fourth carbon has two electron domains: one C-C single bond and one C≡C triple bond; it is sp hybridized.
The fifth carbon has two electron domains: one C-H single bond and one C≡C triple bond; it is sp hybridized.

8 0

3 years ago

What is the amount of moles in 67 g of C

Tju [1.3M]

Answer:The molar mass of atoms of an element is given by the standard relative atomic mass of the element multiplied by the molar mass constant, 1 × 10−3 kg/mol = 1 g/mol.

Explanation:

3 0

2 years ago

A cook places a pan of food on a hot stove and leaves it there. When the food is just about done cooking, which of the following

rjkz [21]

Answer:

C.

The pan will be the same temperature as the stove.

Explanation:

7 0

3 years ago

A blood sample of 4.01 milliliters is collected from a patient to be analyzed for a platelet count. Human blood should have arou

Harlamova29_29 [7]

Given :

Human blood should have around 1.04 kg/L platelets.

A blood sample of 4.01 milliliters is collected from a patient to be analyzed for a platelet count.

To Find :

The expected mass in grams of platelets in the blood sample.

Solution :

1 L of human blood contains 1.04 kg of platelets.

So, amount of platelets is 1 ml blood is :

$=\dfrac{1.04}{1000}\ kg\\\\= \dfrac{1.04\times 1000}{1000}\ gram\\\\= 1.04 \ gram$

Mass of platelets in 4.01 ml blood is :

$m = 1.04\times 4.01\ gram\\\\m = 4.1704\ gram$

Hence, this is the required solution.

3 0

3 years ago