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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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How many moles of I2 will form 3.58 g of NI3?
Mila [183]

1.       The balanced chemical reaction is:

 

N2 +3 I2 = 2NI3

 

We are given the amount of product formed. This will be the starting point of our calculations.

 

3.58 g NI3 ( 1 mol NI3 / 394.71 g NI3 ) ( 3 mol I2 / 2 mol NI3 ) = 0.014 mol I2.

 

Thus, 0.014 mol of I2 is needed to form the given amount of NI3.

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A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. what is its new molarity?
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A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. Its new molarity will be 0.0216 m.

Dilution would be the process of lowering a solute's concentration in a solution. It usually just includes combining the solution with much more solvent, such as water. A solution is diluted when more solvent is added without increasing solute.

Molarity can be calculated by using the formula:

M_{1} V_{1} = M_{2} V_{2}

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Given data:

M_{1} = 0.108 m

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Put the value of given data in above equation.

0.108 m × 50 ml = M × 250ml

M = 0.0216 m

Therefore, the new molarity will be 0.0216 m.

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