Answer: A
Explanation: the only way to turn it from blue to yellow is to mix it with an acidic solution.
Please, observe that it is not right to say that a substance content heat.
Heat is not something that a body or substance content. Heat is the transmission of energy due to difference of temperatures.
An endothermic reactions is that where the reactants abosorb energy from the surroundings to occur. The products, then, will be higher in energy than the reactants while the surroundings get colder.
Yes as there is advertisements for this as a alternative to glue.<span />
Answer: similar, energy
Explanation: (edmentum answer) Several of the elements in period 5 have electron configurations with only one electron in the 5s sublevel. That suggests that the next sublevel that electrons typically fill, 4d, is not much higher in energy.
Answer:
Today, the average total production cost of “standard modulus” carbon fiber is in the range of $7-9 per pound.
