A crystal of ice has a density of 0.917 g/cc.
(a) What is the mass (in grams) of an ice crystal with a volume of 1.666 cm3
?
(b) What is the density of ice in kg/m3
?
(c) What is the volume (in mL) of an ice crystal that weighs 2250 mg?
a)1.53
b)900
c)2
Im not sure why I got b and c wrong (are they wrong)?
yes, both b and c are wrong. I suspect you just didn't read the other digits on your calculator.
Let's analyze each part of the question to determine the correct answers:
(a) To find the mass of an ice crystal with a given volume, we can use the formula:
mass = density * volume
Given that the density of the ice crystal is 0.917 g/cc and the volume is 1.666 cm^3, we can substitute these values into the formula:
mass = 0.917 g/cc * 1.666 cc
mass = 1.53 g
Therefore, the mass of the ice crystal is 1.53 grams.
(b) To find the density of ice in kg/m^3, we need to convert the given density from g/cc to kg/m^3. Since 1 g/cc is equivalent to 1000 kg/m^3, we can convert the density of the ice crystal:
density = 0.917 g/cc * 1000 kg/m^3
density = 917 kg/m^3
Therefore, the density of ice is 917 kg/m^3.
(c) To find the volume of an ice crystal that weighs 2250 mg, let's first convert the mass to grams:
mass = 2250 mg / 1000
mass = 2.25 g
Now we can use the density and the mass to calculate the volume using the formula:
volume = mass / density
volume = 2.25 g / 0.917 g/cc
volume ≈ 2.46 cc
Since 1 cc is equivalent to 1 mL, the volume is approximately 2.46 mL.
Comparing these results to the given options:
a) 1.53 - Correct
b) 900 - Incorrect, the correct value is 917
c) 2 - Incorrect, the correct value is approximately 2.46
So, options b and c are indeed incorrect based on the calculations.