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What is the deepest anyone has dug into the earth?
The Kola Superdeep Borehole is located 10 kilometers north of the town of Zapolyarny, in the Pechengsky District of Murmansk Oblast, Russia. The Kola Core Repository is in the town...
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Ms. Palmeri traveled to Italy this summer and went swimming in the Mediterranean Sea. Her skin felt very dry after a long day of swimming. Why does her skin feels dry?
The Mediterranean sea has a higher solute (namely salt) concentration than Ms. Palmeri's skin cells, thus it is a hypertonic solution. Water will then move by osmosis across the plasma...
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Astudent reported that a limp stalk of celery became crisp when placed in ice water If a hypothesis is shown to answer several different natural phenomena or supported by other evidence, what can it be reconsidered to be?
As you know, an hypothesis, much less a theory, is never proven. It can be shown to be consistent with given observations. As new observations are collected, the given hypothesis...
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A swimming pool measures 50.0 meters by 25.0 meters. How many grams of water are needed to fill the pool, whose average depth is 7.8 feet? Assume the density of water to be 1.0 g/mL.
The formula for is $color(blue)(|bar(ul(color(white)(a/a) "Density" = "Mass"/"Volume" color(white)(a/a)|)))" "$ or $color(blue)(|bar(ul(color(white)(a/a) ρ = m/Vcolor(white)(a/a)|)))" "$ And the formula for volume is $color(blue)(|bar(ul(color(white)(a/a) "Volume"...
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A student obtains a percent error of 20% after finding that the true value for the mass of an object is 50 grams. What is the student's value?
Percent error is defined as the difference between the experimental value and the theoretical value, taken in absolute value, divided by the theoretical value, and multiplied by $100$ $color(blue)("%...
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What is the percent error if the accepted value is 80g and the measured is 82g?
The percent error is basically the fractional deviation from the accepted value. The percent error is the absolute difference between the measured/approximate and accepted/exact values, relative to the exact value:...
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The accepted length of a steel pipe is 5.5 m. How do you calculate the percent error for each of these measurements?
The formula for percent error is: % error = $(x_(measured)-x_(true))/x_(true)*100%$ Our $x_(true)$ value is 5.5 m. All we do now is solve for % error by plugging in each result....
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An experiment produced 0.10 g $CO_2$, with a volume of 0.056 L at STP. If the accepted density of $CO_2$ at STP is 1.96 g/L, what is the approximate percent error?
You have to compare the of $"CO"_2$ produced experimentally at STP to the accepted density of $"CO"_2$ at STP. $"density"="mass"/"volume"$ You are given the mass and volume of the experimentally...
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A student estimated a mass to be 250g, but upon carefully measuring it, found the actual mass to be 240g. What is the percent error?
To find the percent error, we use this formula: $P_%=|(e-t)/t|*100$, where $P_%$ is the percent error, $e$ is the experimental or calculated value and $t$ is the theoretical or known...
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Why would you get electrocuted if you went swimming in a pool during an electrical storm? Hint: think about what people put in pools in order to kill bacteria.
My original theory was that: the reason why we can be electrocuted is that most of the chemicals used to kill bacteria are made of Chlorine, and chlorine is one...
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