Answer:
The correct answer is B. A compound that is a hydrogen ion acceptor in an acid-base reaction
<h2>Double displacement reaction:</h2>
A double displacement reaction is a type of chemical reaction where two compounds react, and positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products.
<h3>For example:</h3>
Na2S+2HCl→2NaCl+H2S
hope it's helpful :)
Carbon can be used in fuel
Answer:
Either the first one or the third one.
Explanation:
Using process of elimination: knowing that the controlled variable is something the conductor is able to control and stays the same throughout; the amount of water is the same, but it also states that temperature is not the same throughout. This cancels out B because the amount of sugar dissolved varies and doesn’t stay the same. D fits the same criteria as well.
so now we are left with A and C.
An independent variable is something that can be by itself and doesn’t depend on anything else. Sugar is NOT independent, as it dissolves DEPENDING on the amount of liquid. So we can already rule out that sugar is a dependent variable. Both A and C have those choices though, so now we are with the control group and the independent variable.
Think about it, which is the independent variable? Water amount doesn’t depend on anything, while the temperature depends on the room. So the answer is most likely A.
Hope this helps, don’t stress about homework. Happy Holidays!
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