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andre [41]
3 years ago
10

PLEASE HELP

Chemistry
2 answers:
MAXImum [283]3 years ago
7 0

Answer:

Alloys. And can be represented by one chemical symbol

Explanation: im just sMeRT LikE thAT yuo KnoW

n200080 [17]3 years ago
6 0
Mk i will comment so u can make them brainliest lols
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Which phrase accurately describes an elliptical galaxy?
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Answer:

Elliptical galaxies are one of the three types of galaxies. They have a rounded shape of an ellipse, like a stretched-out circle. They lack the swirling arms that are a main feature of spiral galaxies.

6 0
3 years ago
ANSWER ASAP!
Rainbow [258]

Answer:

All around you there are chemical reactions taking place. Green plants are photosynthesising, car engines are relying on the reaction between petrol and air and your body is performing many complex reactions. In this chapter we will look at two common types of reactions that can occur in the world around you and in the chemistry laboratory. These two types of reactions are acid-base reactions and redox reactions.

Explanation:

7 0
3 years ago
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The half-life of thorium-227 is 18.72 days. How many days are required for three-fourths of a given amount to decay?
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T½=18.72days
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7 0
3 years ago
Which type of substance have a definite shape and fixed volume?
IRINA_888 [86]
The answer is A. Solids only
8 0
3 years ago
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He resonance structures of carbon monoxide are shown below. show how each structure can be converted into the other using the cu
Ugo [173]
The two resonating structures of Carbon Monoxide are shown below.
The movement of electrons are shown by arrow.

Structure A:
                  In structure a A the formal charges of Carbon and Oxygen are zero. As Formal Charge is calculated as,

             = # of valence electron - electrons in lone pairs + 1/2 bonding                            electrons electrons

For C:
           = 4 - 2 + 4/2
           = 4- 4
           = 0

For O:
           = 6 - 4 + 4/2
           = 6- 6
           = 0

Structure B:

Formal Charge on C:

           = 4 - 2 + 6/2
           = 4- 5
           = -1

Formal Charge on O:

           = 6 - 2 + 6/2
           = 6 - 5
           = +1

4 0
3 years ago
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