Answer:
D. 15g
Explanation:
The law of conservation of mass states that, in a chemical reaction, mass can neither be created nor destroyed. This means that the amount of matter in the elements of the reactants must be equal to the amount in the resulting products.
In this question, 25 grams of a reactant AB, was broken down in a reaction to produce 10 grams of products A and X grams of product B. According to the law of conservation of mass, the mass of the reactant must be equal to the total mass of the products. This means that 25 grams must also be the total mass of both products in this reaction. Hence, if product A is 10 grams, product B will be 25 grams - 10 grams = 15 grams.
Therefore, product B must be 15 grams in order to form a total of 25 grams when added to the mass of product A. This will equate the mass of the reactant AB and fulfill the law of conservation of mass.
Yo sup??
we can solve this problem by applying Newton's 2nd law
F*t=Δp
p=momentum
pi=mu=1500*30
pf=mv=m*0=0
Therefore
F*3=1500*30
F=15000 N
Hope this helps.
The best answer is "<span>High temperatures increase the activation energy of the reaction."
The Haber process is an exothermic reaction at room temperature. This means that the reaction actually favors the reverse reaction, especially when the temperature is increased. So why increase the reaction temperature?
The reason for this is that nitrogen is a very stable element. Therefore, more energy is needed to overcome the slow rate of reaction. So the reaction temperature must be low enough to favor a forward reaction, but high enough to speed up the reaction.</span>
It depends on the type of decay that's taking place, but if it's b+ it'd decay into Mn-52. If it's b- it'd decay into Co-59 (i'm sure??)
The terms and their definitions are as follows:
1. Energy
B. The capacity to do work.
Energy comes in different forms, each relating to a different type of work. For example, kinetic energy and potential energy.
2. Volatile
D. Substance that changes to gas easily at room temperature
Volatile substances do not have strong attractive forces between their molecules, so they are easily overcome at room temperature and the substance evaporate. For example, petrol.
3. Chemical Reaction
H. Another term for chemical change
4. Chemical Change
G. <span>The change of one or more substances into other substances
</span>Chemical changes involve rearrangement or removal of atoms from a substance
5. Endothermic
J. Any chemical reaction that absorbs energy
These reactions require the addition of heat energy to take place
6. Exothermic
F. Any chemical reaction that gives off energy
Exothermic reactions are associated with a rise in temperature of the system
7. Density
I. The amount of matter contained in a unit volume
Density is characteristic of a substance and independent of the amount that is present
8. Physical property
A. Can be observed without any change in the identity of the substance
Physical changes include breaking and state changes
9. Law of conservation of mass
E<span>.The fact that matter can be neither created nor destroyed in a chemical change.
This is true for any reaction in the universe
10. Chemical property
</span><span>C. Can be observed only when there is a change in composition of a substance
11. Physical Change
K. </span>The type of change in which the identity of substances does not change
