I need help ASAP with these Chemistry questions please!!

2. In the 1.07 lab, you took mass and volume measurements and plugged them into the density formula and calculated densities for different objects. How do you preserve the accuracy and precision of your measurements when doing calculations with the measurements?

3. If you're measuring water in a graduated cylinder that's marked off in mL and it looks like the water level falls halfway in between the 1 and 2mL marks, how would you record this measurement? What if it looks like the water level were right at the 1mL mark? How would your m

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I need help ASAP with these Chemistry questions please!!

2. In the 1.07 lab, you took mass and volume measurements and plugged them into the density formula and calculated densities for different objects. How do you preserve the accuracy and precision of your measurements when doing calculations with the measurements?

3. If you're measuring water in a graduated cylinder that's marked off in mL and it looks like the water level falls halfway in between the 1 and 2mL marks, how would you record this measurement? What if it looks like the water level were right at the 1mL mark? How would your m