The answer is 329. Because 273 + 56 = 329.
You tellme i have the same anwser
botch # bit
Answer:When conducting research, scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis (often in the form of an if/then statement), the results aiming to support or contradict a theory.
Explanation: A hypothesis is by definition an initial interpretation or explanation. A hypothesis can be proven wrong and is usually proven wrong via the testing of it during experimentation.
Answer:
887.89 μg/m³
Explanation:
Given:
Duration of mass flow = 24 hours = 24 × 60 = 1440 minutes
Flowrate = 1.4 m³/min
starting weight of the filter paper before sampling = 2.05 grams
Filter's weight = 3.84 grams
Now,
Mass of the particular matter collected
= Mass of filter after 24 hours - Initial weight of the filter
= 3.84 - 2.05
= 1.79
Now,
The total volume passing through filter = Flowerate × Time
= 1.4 × 1440
= 2016 m³
Particulate matter concentration =
or
Particulate matter concentration =
or
Particulate matter concentration = 0.0008878 g/m³
also,
1 gram = 10⁶ micrograms
thus,
Particulate matter concentration = 0.0008878 × 10⁶ μg/m³
= 887.89 μg/m³