900 mg is a little light.
90g is way out, and 900g is ridiculous.
Of the three choices given, 900mg = 0.9g is the closest to a grape.
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The mass of a grape is typically around 5-10 grams, with variations depending on the grape variety. So, 90 grams would be unusually large for a single grape. A mass of 900 grams would be extremely large and likely a mistake or misinterpretation of data.
After 3 half-lives, the remaining mass is ( \frac{1}{8} ) of the original mass. So if the original mass is 12.5 mg, the final mass after 3 half-lives would be ( 12.5 , \text{mg} \times \frac{1}{8} = 1.56 , \text{mg} ).
The equation for finding distance lifted when force and mass are given is: distance lifted = (force * distance)/ mass * gravity, where force is the applied force, mass is the mass of the object being lifted, distance is the vertical distance lifted, and gravity is the acceleration due to gravity (9.81 m/s^2).
The mass of the object would be 0.458 grams. This is calculated by dividing the mass in milligrams (458 mg) by the conversion factor (1000 mg per gram).
Mg: 24.305 K: 39.0983
To convert cc (cubic centimeters) to mg (milligrams), you need to know the density of the substance in question. Once you have the density, you can multiply the volume in cc by the density to get the mass in mg. The formula for the conversion is: mass (mg) = volume (cc) x density (mg/cc).