Plz unit
1 ) terry heats to different masses of substance a to different temperatures, and measures the amount of both carbon dioxide and water produced. which of the following is true about this experiment?
a. this experiment is uncontrolled because to gaseous products are measured.
b. this experiment is well control because the masses of substance a and the product are varied.
c. this experiment is uncontrolled because two different masses of substance a are used.
d. this experiment is well controlled because only the mass of substance a is varied.
2 ) a material has a density of 8.9 g / cm3 you have 3 cubic centimeters of substance. what is the material's mass in grams
a. 0.3 g
b. 3.0 g
c. 5.9 g
d. 27 g
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What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Which of the following are correct values for the ideal gas laws constant r

98 points you will be galileo perform the experiment to determine if objects with different mass fall at the same, or different, rates in the air and in a vacuum. before you conduct your experiment, you need to form a hypothesis. a hypothesis is a prediction of what you think will happen in the experiment. the hypothesis is a statement that describes “if” a certain set of circumstances are present “then” there will be a specific result that will occur. record your hypothesis here: record the results from step one of the experiment (dropping the objects in the air): first trial: second trial: third trial: record the results from step two of the experiment (dropping the objects in a vacuum): first trial: second trial: third trial: did the experiment support your hypothesis? using the data from your experiment, describe why you believe your hypothesis was either proven or disproven. what forces were acting on the objects dropped in the air? what force was acting on the objects dropped in the vacuum? part two: comparing forces choose two forces and compare and contrast these forces. you must provide two ways that they are alike and two ways that they are different. you may make a list, write in paragraph form, or make a chart. choose two forces and compare and contrast these forces. these must be different forces than used in the prior question. provide two ways that they are similar and two ways that they are different. you may make a list, write it out, or make a chart.