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elena-s [515]
3 years ago
5

Two technicians are discussing testing coolant for proper pH. Technician A says that coolant has a pH above 7 when new and becom

es lower with use in an engine. Technician B says that OAT and HOAT coolants have a lower pH when new compared to the old green IAT coolant. Which technician is correct?
Chemistry
1 answer:
Ilia_Sergeevich [38]3 years ago
8 0

Answer:

yes

Explanation:

                                                 

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ehidna [41]
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3 0
3 years ago
Which statement best describes the reaction pathway graph for an exothermic reaction but not an endothermic reaction? It has a h
ruslelena [56]
Answer: "The reactants are higher in energy than the products"

Explanation:

The exothermic reactions are characterized by the release of heat to the surroundings. The reactants lose heat that is delivered to the surroundings which implies that the products will be lower in energy than the reactants.

The hills that you can see in a reaction energy diagram are not related with the final change of energy. The hills are an indication of the activation energy needed to start the reaction, but they do not measure the change of energy from the products to the reactants.

The enthalpy that is a state variable that identifies the content of heat. Then the change of enthalpy for the exothermic reactions is negative, meaning that the energy of the products is lower than the energy of the reactants. 
3 0
4 years ago
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ladessa [460]

Answer:

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6 0
3 years ago
Which elements form ions that are usually colored in solid compounds and in solution? A. alkali metals B. alkaline earth metals
ollegr [7]

Answer:

C. transition elements

Explanation:

Transition elements are groups of metallic elements that have partially filled d orbitals. They occupy the d-block of the periodic table (Group 3-12). Examples of elements that fall under this category are Nickel (Ni), Cobalt (Co), Copper (Cu), Zinc (Zn) etc. Transition metals have outstanding properties that distinguishes them from other elements.

One of these properties is their ability to form colored compounds due to their unfilled d electron shells. They form ions that are usually colored in solid compounds and in solution.

4 0
3 years ago
How would you separate a mixture of alcohol and water
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