Answer:
Matter that has the same composition and properties throughout is called a substance.
Explanation:
Answer: A
Explanation:
Answer choices B and C both involve some form of procrastination. In the question it states what is the BEST strategy and I think that that would be doing something you like to do so you don’t make excuses to not do it.
Answer:
The new temperature is 270 kelvin
Explanation:
We use the gas law that relates volume and temperature to find the new temperature
This is the Charles’ law and it states that volume and temperature are directly proportional.
Mathematically;
V1/T1 = V2/T2
From the question , V1 = 1000 ml, V2 = 900 ml while T1 = 300 k and T2 = ?
it is T2 we are trying to calculate
Changing the subject of formula;
V2T1/V1 = T2
(900 * 300)/1000 = T2
T2 = 270000/1000
T2 = 270 kelvin
Answer: The correct answer is true.
Explanation:
There are two types of reactions based on the heat absorbed or released:
1. Exothermic reactions: In these reactions, heat is released. The energy of the products is less than the energy of the reactants. The for these reactions is negative.
2. Endothermic reactions: In these reactions, heat is absorbed by the reactants. The energy of the products is more than the energy of the reactants. The for these reactions is positive.
In the given equation:
The energy is written on the product side, which means that the heat is released in the reaction. Hence, the given equation is a exothermic reaction.
Therefore, the given statement is true.
Answer:
I think that it's the temperature