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sdas [7]
3 years ago
9

Help will mark most brainliest

Chemistry
2 answers:
kolezko [41]3 years ago
5 0

Answer:

same all i see is a black screen sorry i couldn't help

Explanation:

Fantom [35]3 years ago
4 0
All i are is a black screen
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Refer to the image please!
Ludmilka [50]

Answer:

9. Electron Affinity

10. The second option....

8 0
2 years ago
What happens when two objects when they are brought closer together The mass of both objects decrease The mass of both objects i
Maurinko [17]

Answer:

The correct option is

The gravitational force between them increases

Explanation:

According to Newton's law of universal gravitation states that the force of attraction between two bodies is directly proportional to the product of the masses of the bodies and inversely proportional to the square of the distance of their centers from each other.

The formula for universal gravitation is given as follows;

F_{1} = F_{2} =G \times \dfrac{m_{1}  \times m_{2}}{r^{2}}

Where;

F₁, and F₂ = The gravitational forces of attraction on each mass

G = The gravitational constant

m₁ = The mass of one body

m₂ = The mass of the body

r = The distance between the centers of the two bodies

Therefore, the gravitational force of attraction on each object is inversely proportional to the as the distance between the centers of the two bodies

When the distance between the centers of the two bodies decreases, the two objects are brought closer together, the gravitational force of attraction between them increases.

8 0
3 years ago
u conclude about these two reactions based on the chemical equations? Reaction A: 6CO2(g) + 6H2O(l) + sunlight → C6H12O6(aq) + 6
xz_007 [3.2K]
Chemical Reactions

Chemical changes take place when molecules or elements interact with other elements or molecules to form new chemical compounds. In order for a reaction to take place between molecules and or atoms, these molecules must come into contact with each other.

An example of a chemical reaction can be shown by the reaction of ammonia with hydrogen chloride to form ammonium chloride.  This reaction is usually shown by a shorthand method called a chemical equation. The chemical equation for this reaction is...

NH3   +   HCl   �   NH4Cl

This equation does not clearly show what has happened. In order for these two molecules to react, the pair of electrons on nitrogen must collide with the hydrogen atom of the hydrogen chloride on the side exactly opposite of the chlorine atom. 

This collision must not only be precise as to the angle of the collision, it must have enough energy to break the bond between the hydrogen atom and the chlorine atom and form a new bond between the hydrogen atom and the nitrogen atom. Energy is released when a bond is formed. If all of these requirements are met, a reaction occurs forming a new compound.



The rate of a chemical reaction depends on all of the above factors.  The reaction rate is measured by the change in concentration of one of the reactants or products over a measured period of time.

If some reaction condition is changed, the reaction rate will be changed.

Reaction coordinate diagrams are used to visualize the energy changes in chemical reactions. Some initial energy must be applied to any reaction in order to get the reaction started. This energy is called the energy of activation Ea.

If a reaction releases more energy than it takes to keep it going, it is called an exothermic reaction.



If a reaction requires a constant application of energy to keep it going, it is called an endothermic reaction.



A catalyst is something that, when added to a chemicalreaction, will increase the reaction rate without undergoing a permanent change.  Although it appears that only Ea is lowered for a catalyzed reaction, the actual reaction pathway must change due to the involvement of the catalyst with the reactants. The energy released for the reaction remains the same. Catalysts are used extensively in biochemical reactions in order to decrease the energy demands for the animal or plant.



Matter can neither be gained nor lost in a chemical reaction. The number and type of atoms in the reactants must exactly equal the number and types of atoms in the products. The arrangement of the atoms will be different because new compounds are formed. Therefore, we must balance chemical equations with respect to the numbers of all of the atoms that are involved in the reaction.

7 0
3 years ago
Which of the following is true about the composition of ionic compounds?
Andrej [43]
A. Anions and cations
4 0
3 years ago
Read 2 more answers
What would be the empirical formula of a compound that is 25.5% carbon, 6.40% hydrogen, and 68.1% oxygen?
aleksandr82 [10.1K]
Empirical formula is the simplest ratio of whole numbers of components in a compound 
in 100 g of compound 
                                C                          H                          O
mass                   25.5 g                     6.40 g                 68.1 g
number of moles  25.5 g/12 g/mol      6.40 g/ 1 g/mol      68.1 g/ 16 g/mol 
                             = 2.13 mol              = 6.40 mol          = 4.26 mol
divide by least number of moles 
                             2.13/2.13 = 1          6.40/2.13 = 3.0    4.26/2.13 = 2.0
all rounded off 
C - 1
H - 3
O - 2

empirical formula - CH₃O₂
8 0
4 years ago
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