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Damm [24]
2 years ago
11

What is chemistry??????​

Chemistry
1 answer:
Charra [1.4K]2 years ago
7 0

Explanation:

the guide welcomed the tourists.(into passive voice)

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How many electrons in an atom can have each of the following quantum number or sublevel designations?
lutik1710 [3]

Answer: a:6 electrons, b:10electrons, c: 2electrons

Explanation:

1.Principle quantum number(n)

n is the number of shell, it is a positive integer. The maximum number of electrons in a shell is 2(n2)

2.Azimuthal quantum number(l)

l is the number of subshell in the principal shell

The name of subshell are s, p, d, f

The number of nodes in each subshell is

s is l=0, p is l=1, d is l=2, f is l=3.

Each shell can have 2 x l + 1 sublevels, and each sublevel can accommodate maximum of 2 electrons and have two electrons.

A. n=2, l=1 then 2 x 1 + 1= 3 subshell, 3*2= 6 electrons in the p subshell

b. 3d, d is l = 2 then 2 x 2 + 1 = 5 sublevels, 5*2=10 electrons in the d subshell

c. 4s, s is l=0 then 2 x 0 + 1 = 1 sublevel, 1*2=2 electrons in the s subshell.

6 0
3 years ago
Gases with high molecular weights diffuse more slowly than gases with lower molecular weights.
Rom4ik [11]
The answer to this item is TRUE. This can be explained through the Graham's law. This law states that the rate at which gases diffuse is inversely proportional to the square root of their densities which is also related to their molecular masses. 
7 0
3 years ago
Read 2 more answers
The _______________________________________ is often referred to as the powerhouse of the cell
almond37 [142]

Answer:

Mitochondria

Explanation:

7 0
2 years ago
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Stars which never disappear below the horizon are called:______ stars.
My name is Ann [436]

Answer:

Stars which never disappear below the horizon are called <u>circumpolar</u> stars.

4 0
2 years ago
Where does most of the mass of an atom come from? What parts of the atom make it up?
motikmotik

Answer:

nucleus

Explanation:

The majority of an atoms' mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom's constituent particles, with a mass of 9.11 x 10-31 kg and a size too small to be measured by current techniques.

6 0
2 years ago
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