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Tasya [4]
3 years ago
14

15. Use the information below to answer the following question(s). Four groups of students were each given a piece of aluminum f

oil (20 cm 20 cm), a container holding one liter of water, and some pennies. Each group was instructed to use the aluminum foil to make a boat that would hold the greatest number of pennies while floating on the water. The dependent variable in this investigation is the:
A. amount of water.
B. number of pennies.
C. size of the aluminum foil.
D. length of the boat.
Chemistry
1 answer:
Mamont248 [21]3 years ago
7 0

Answer:

b

Explanation:

because the variable being tested in this experiment is the number of pennies that could fit into that boat

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LUCKY_DIMON [66]

The mass of the empty flask is 17.4916 g. Now after feeling the ordinary water the mass of the flask is 43.9616 g. Thus the change of weight due to addition of ordinary water is (43.9616 - 17.4916) = 26.47 g.

Now as the density of the ordinary water at 20°C is 0.9982 g/ml, so 26.47 g is equivalent to \frac{26.47}{0.9982}=26.5177 mL of water. Thus the capacity of the flask is 26.5177 mL.

Now the density of heavy water is 1.1053 g/mL at 20°C. Thus 26.5177 mL of heavy water is equivalent to (1.1053×26.5177) = 29.310 g.

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3 years ago
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3 years ago
What is the molar mass of CuCIO3
Genrish500 [490]
<h3>Answer:</h3>

147.05 g/mol

<h3>General Formulas and Concepts:</h3>

<u>Math</u>

<u>Pre-Algebra</u>

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  3. Exponents
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