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koban [17]
3 years ago
10

How do the test variables (independent variables) and outcome variables (dependent variables) in an experiment compare? A. The o

utcome variable (dependent variable) controls the test variable (independent variable). B. The test variable (independent variable) controls the outcome variable (dependent variable). C. The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other. D. The test variables (independent variables) and outcome variables (dependent variables) are the same things.
Chemistry
2 answers:
SVETLANKA909090 [29]3 years ago
8 0

Answer:

C.

Explanation:

Rina8888 [55]3 years ago
5 0

Answer:

Study Island:

The answer is...

C.  The test variable (independent variable) and outcome variable (dependent variable) have no affect on each other.

Explanation:

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Answer:

<u>H2PO4- is a proton donor and HPO42_ is a proton acceptor</u>

Explanation:

Step 1: What are hydrogen ion donor and acceptor

in the following reaction we see that:

⇒ H2PO4- is more likely to give a H+ ion to form HPO42-.  

⇒HPO42- is more likely to take a H+ ion, to form H2PO4-

The reaction of an acid in water solvent is described as a dissociation :

HA ⇔ H+ + A-

⇒where HA is a proton acid

So, H2PO4- = HA   and  HPO42- = A-

Acids are proton donors. So, <u>H2PO4- is a proton donor and HPO42_ is a proton acceptor</u>

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